diff --git a/app/Controllers/BoardsController.php b/app/Controllers/BoardsController.php
index 411fa68..f21535d 100644
--- a/app/Controllers/BoardsController.php
+++ b/app/Controllers/BoardsController.php
@@ -173,35 +173,6 @@ class BoardsController extends Controller
         return $this->redirect('/board/' . $board->slug);
     }
 
-    public function updateCardAgeSettings(Request $request, int $id): mixed
-    {
-        if (!AuthService::isLoggedIn()) {
-            return $this->json(['ok' => false, 'error' => 'Unauthorized'], 401);
-        }
-
-        $row = $this->boards()->find($id);
-        if ($row === null) {
-            return $this->json(['ok' => false, 'error' => 'Not found'], 404);
-        }
-
-        $showCardAge       = (string) $request->input('show_card_age', '0') === '1';
-        $cardAgeWarningDays = max(0, (int) $request->input('card_age_warning_days', 0));
-
-        $this->boards()->updateCardAgeSettings(
-            $id,
-            $showCardAge,
-            $cardAgeWarningDays,
-            date('Y-m-d H:i:s'),
-            AuthService::getCurrentUsername()
-        );
-
-        return $this->json([
-            'ok'                     => true,
-            'show_card_age'          => $showCardAge,
-            'card_age_warning_days'  => $cardAgeWarningDays,
-        ]);
-    }
-
     public function destroy(string $slug): mixed
     {
         if ($guard = AuthService::requireLogin()) {
diff --git a/app/Controllers/ColumnsController.php b/app/Controllers/ColumnsController.php
index de0641e..5c0038c 100644
--- a/app/Controllers/ColumnsController.php
+++ b/app/Controllers/ColumnsController.php
@@ -97,6 +97,35 @@ class ColumnsController extends Controller
         return $this->json(['ok' => true, 'show_card_count' => $show]);
     }
 
+    public function updateCardAgeSettings(Request $request, int $id): mixed
+    {
+        if (!AuthService::isLoggedIn()) {
+            return $this->json(['ok' => false, 'error' => 'Unauthorized'], 401);
+        }
+
+        $row = $this->columns()->find($id);
+        if ($row === null) {
+            return $this->json(['ok' => false, 'error' => 'Not found'], 404);
+        }
+
+        $showCardAge        = (string) $request->input('show_card_age', '0') === '1';
+        $cardAgeWarningDays = max(0, (int) $request->input('card_age_warning_days', 0));
+
+        $this->columns()->updateCardAgeSettings(
+            $id,
+            $showCardAge,
+            $cardAgeWarningDays,
+            date('Y-m-d H:i:s'),
+            AuthService::getCurrentUsername()
+        );
+
+        return $this->json([
+            'ok'                    => true,
+            'show_card_age'         => $showCardAge,
+            'card_age_warning_days' => $cardAgeWarningDays,
+        ]);
+    }
+
     public function destroy(int $id): mixed
     {
         if (!AuthService::isLoggedIn()) {
diff --git a/app/Controllers/SwimLanesController.php b/app/Controllers/SwimLanesController.php
index 4ebc01b..e8f2c29 100644
--- a/app/Controllers/SwimLanesController.php
+++ b/app/Controllers/SwimLanesController.php
@@ -79,6 +79,35 @@ class SwimLanesController extends Controller
         return $this->json(['ok' => true]);
     }
 
+    public function updateCardAgeSettings(Request $request, int $id): mixed
+    {
+        if (!AuthService::isLoggedIn()) {
+            return $this->json(['ok' => false, 'error' => 'Unauthorized'], 401);
+        }
+
+        $row = $this->lanes()->find($id);
+        if ($row === null) {
+            return $this->json(['ok' => false, 'error' => 'Not found'], 404);
+        }
+
+        $showCardAge        = (string) $request->input('show_card_age', '0') === '1';
+        $cardAgeWarningDays = max(0, (int) $request->input('card_age_warning_days', 0));
+
+        $this->lanes()->updateCardAgeSettings(
+            $id,
+            $showCardAge,
+            $cardAgeWarningDays,
+            date('Y-m-d H:i:s'),
+            AuthService::getCurrentUsername()
+        );
+
+        return $this->json([
+            'ok'                    => true,
+            'show_card_age'         => $showCardAge,
+            'card_age_warning_days' => $cardAgeWarningDays,
+        ]);
+    }
+
     public function destroy(int $id): mixed
     {
         if (!AuthService::isLoggedIn()) {
diff --git a/app/Models/Board.php b/app/Models/Board.php
index 5c63830..16b8125 100644
--- a/app/Models/Board.php
+++ b/app/Models/Board.php
@@ -11,8 +11,6 @@ class Board
     public string $slug = '';
     public bool $importFromPrintstream = false;
     public string $printstreamJobName = '';
-    public bool $showCardAge = false;
-    public int $cardAgeWarningDays = 0;
     public ?string $createdAt = null;
     public string $createdBy = '';
     public ?string $updatedAt = null;
@@ -26,8 +24,6 @@ class Board
         $model->slug                  = (string) ($row['slug'] ?? '');
         $model->importFromPrintstream = (bool) ($row['import_from_printstream'] ?? false);
         $model->printstreamJobName    = (string) ($row['printstream_job_name'] ?? '');
-        $model->showCardAge           = (bool) ($row['show_card_age'] ?? false);
-        $model->cardAgeWarningDays    = (int) ($row['card_age_warning_days'] ?? 0);
         $model->createdAt             = $row['created_at'] ?? null;
         $model->createdBy             = (string) ($row['created_by'] ?? '');
         $model->updatedAt             = $row['updated_at'] ?? null;
diff --git a/app/Models/BoardColumn.php b/app/Models/BoardColumn.php
index 181b2a7..295b1c8 100644
--- a/app/Models/BoardColumn.php
+++ b/app/Models/BoardColumn.php
@@ -11,6 +11,8 @@ class BoardColumn
     public string $name = '';
     public int $position = 0;
     public bool $showCardCount = false;
+    public bool $showCardAge = false;
+    public int $cardAgeWarningDays = 0;
     public ?string $createdAt = null;
     public string $createdBy = '';
     public ?string $updatedAt = null;
@@ -19,15 +21,17 @@ class BoardColumn
     public static function fromRow(array $row): self
     {
         $model = new self();
-        $model->id            = (int) ($row['id'] ?? 0);
-        $model->boardId       = (int) ($row['board_id'] ?? 0);
-        $model->name          = (string) ($row['name'] ?? '');
-        $model->position      = (int) ($row['position'] ?? 0);
-        $model->showCardCount = (bool) ($row['show_card_count'] ?? false);
-        $model->createdAt     = $row['created_at'] ?? null;
-        $model->createdBy     = (string) ($row['created_by'] ?? '');
-        $model->updatedAt     = $row['updated_at'] ?? null;
-        $model->updatedBy     = (string) ($row['updated_by'] ?? '');
+        $model->id                 = (int) ($row['id'] ?? 0);
+        $model->boardId            = (int) ($row['board_id'] ?? 0);
+        $model->name               = (string) ($row['name'] ?? '');
+        $model->position           = (int) ($row['position'] ?? 0);
+        $model->showCardCount      = (bool) ($row['show_card_count'] ?? false);
+        $model->showCardAge        = (bool) ($row['show_card_age'] ?? false);
+        $model->cardAgeWarningDays = (int) ($row['card_age_warning_days'] ?? 0);
+        $model->createdAt          = $row['created_at'] ?? null;
+        $model->createdBy          = (string) ($row['created_by'] ?? '');
+        $model->updatedAt          = $row['updated_at'] ?? null;
+        $model->updatedBy          = (string) ($row['updated_by'] ?? '');
 
         return $model;
     }
diff --git a/app/Models/SwimLane.php b/app/Models/SwimLane.php
index 4978294..4910aa7 100644
--- a/app/Models/SwimLane.php
+++ b/app/Models/SwimLane.php
@@ -10,6 +10,8 @@ class SwimLane
     public int $boardId = 0;
     public string $name = '';
     public int $position = 0;
+    public bool $showCardAge = false;
+    public int $cardAgeWarningDays = 0;
     public ?string $createdAt = null;
     public string $createdBy = '';
     public ?string $updatedAt = null;
@@ -18,14 +20,16 @@ class SwimLane
     public static function fromRow(array $row): self
     {
         $model = new self();
-        $model->id        = (int) ($row['id'] ?? 0);
-        $model->boardId   = (int) ($row['board_id'] ?? 0);
-        $model->name      = (string) ($row['name'] ?? '');
-        $model->position  = (int) ($row['position'] ?? 0);
-        $model->createdAt = $row['created_at'] ?? null;
-        $model->createdBy = (string) ($row['created_by'] ?? '');
-        $model->updatedAt = $row['updated_at'] ?? null;
-        $model->updatedBy = (string) ($row['updated_by'] ?? '');
+        $model->id                 = (int) ($row['id'] ?? 0);
+        $model->boardId            = (int) ($row['board_id'] ?? 0);
+        $model->name               = (string) ($row['name'] ?? '');
+        $model->position           = (int) ($row['position'] ?? 0);
+        $model->showCardAge        = (bool) ($row['show_card_age'] ?? false);
+        $model->cardAgeWarningDays = (int) ($row['card_age_warning_days'] ?? 0);
+        $model->createdAt          = $row['created_at'] ?? null;
+        $model->createdBy          = (string) ($row['created_by'] ?? '');
+        $model->updatedAt          = $row['updated_at'] ?? null;
+        $model->updatedBy          = (string) ($row['updated_by'] ?? '');
 
         return $model;
     }
diff --git a/app/Repositories/BoardColumnRepository.php b/app/Repositories/BoardColumnRepository.php
index 5dd5e53..00e06e5 100644
--- a/app/Repositories/BoardColumnRepository.php
+++ b/app/Repositories/BoardColumnRepository.php
@@ -35,17 +35,19 @@ class BoardColumnRepository extends Repository
     public function insert(BoardColumn $col): BoardColumn
     {
         $this->database->execute(
-            'INSERT INTO board_columns (board_id, name, position, show_card_count, created_at, created_by, updated_at, updated_by)
-             VALUES (:board_id, :name, :position, :show_card_count, :created_at, :created_by, :updated_at, :updated_by)',
+            'INSERT INTO board_columns (board_id, name, position, show_card_count, show_card_age, card_age_warning_days, created_at, created_by, updated_at, updated_by)
+             VALUES (:board_id, :name, :position, :show_card_count, :show_card_age, :card_age_warning_days, :created_at, :created_by, :updated_at, :updated_by)',
             [
-                'board_id'        => $col->boardId,
-                'name'            => $col->name,
-                'position'        => $col->position,
-                'show_card_count' => $col->showCardCount ? 1 : 0,
-                'created_at'      => $col->createdAt,
-                'created_by'      => $col->createdBy,
-                'updated_at'      => $col->updatedAt,
-                'updated_by'      => $col->updatedBy,
+                'board_id'              => $col->boardId,
+                'name'                  => $col->name,
+                'position'              => $col->position,
+                'show_card_count'       => $col->showCardCount ? 1 : 0,
+                'show_card_age'         => $col->showCardAge ? 1 : 0,
+                'card_age_warning_days' => $col->cardAgeWarningDays,
+                'created_at'            => $col->createdAt,
+                'created_by'            => $col->createdBy,
+                'updated_at'            => $col->updatedAt,
+                'updated_by'            => $col->updatedBy,
             ]
         );
 
@@ -71,6 +73,21 @@ class BoardColumnRepository extends Repository
         );
     }
 
+    public function updateCardAgeSettings(int $id, bool $showCardAge, int $cardAgeWarningDays, string $updatedAt, string $updatedBy): void
+    {
+        $this->database->execute(
+            'UPDATE board_columns SET show_card_age = :show_card_age, card_age_warning_days = :card_age_warning_days,
+             updated_at = :updated_at, updated_by = :updated_by WHERE id = :id',
+            [
+                'show_card_age'         => $showCardAge ? 1 : 0,
+                'card_age_warning_days' => $cardAgeWarningDays,
+                'updated_at'            => $updatedAt,
+                'updated_by'            => $updatedBy,
+                'id'                    => $id,
+            ]
+        );
+    }
+
     public function updatePosition(int $id, int $position, string $updatedAt, string $updatedBy): void
     {
         $this->database->execute(
diff --git a/app/Repositories/BoardRepository.php b/app/Repositories/BoardRepository.php
index 2e69d94..f565341 100644
--- a/app/Repositories/BoardRepository.php
+++ b/app/Repositories/BoardRepository.php
@@ -63,18 +63,14 @@ class BoardRepository extends Repository
     {
         $this->database->execute(
             'INSERT INTO boards
-                (name, slug, import_from_printstream, printstream_job_name, show_card_age, card_age_warning_days,
-                 created_at, created_by, updated_at, updated_by)
+                (name, slug, import_from_printstream, printstream_job_name, created_at, created_by, updated_at, updated_by)
              VALUES
-                (:name, :slug, :import_from_printstream, :printstream_job_name, :show_card_age, :card_age_warning_days,
-                 :created_at, :created_by, :updated_at, :updated_by)',
+                (:name, :slug, :import_from_printstream, :printstream_job_name, :created_at, :created_by, :updated_at, :updated_by)',
             [
                 'name'                    => $board->name,
                 'slug'                    => $board->slug,
                 'import_from_printstream' => $board->importFromPrintstream ? 1 : 0,
                 'printstream_job_name'    => $board->printstreamJobName,
-                'show_card_age'           => $board->showCardAge ? 1 : 0,
-                'card_age_warning_days'   => $board->cardAgeWarningDays,
                 'created_at'              => $board->createdAt,
                 'created_by'              => $board->createdBy,
                 'updated_at'              => $board->updatedAt,
@@ -106,21 +102,4 @@ class BoardRepository extends Repository
             ]
         );
     }
-
-    public function updateCardAgeSettings(int $id, bool $showCardAge, int $cardAgeWarningDays, string $updatedAt, string $updatedBy): void
-    {
-        $this->database->execute(
-            'UPDATE boards
-             SET show_card_age = :show_card_age, card_age_warning_days = :card_age_warning_days,
-                 updated_at = :updated_at, updated_by = :updated_by
-             WHERE id = :id',
-            [
-                'show_card_age'         => $showCardAge ? 1 : 0,
-                'card_age_warning_days' => $cardAgeWarningDays,
-                'updated_at'            => $updatedAt,
-                'updated_by'            => $updatedBy,
-                'id'                    => $id,
-            ]
-        );
-    }
 }
diff --git a/app/Repositories/SwimLaneRepository.php b/app/Repositories/SwimLaneRepository.php
index 5bec01f..0c1ec71 100644
--- a/app/Repositories/SwimLaneRepository.php
+++ b/app/Repositories/SwimLaneRepository.php
@@ -35,16 +35,18 @@ class SwimLaneRepository extends Repository
     public function insert(SwimLane $lane): SwimLane
     {
         $this->database->execute(
-            'INSERT INTO swim_lanes (board_id, name, position, created_at, created_by, updated_at, updated_by)
-             VALUES (:board_id, :name, :position, :created_at, :created_by, :updated_at, :updated_by)',
+            'INSERT INTO swim_lanes (board_id, name, position, show_card_age, card_age_warning_days, created_at, created_by, updated_at, updated_by)
+             VALUES (:board_id, :name, :position, :show_card_age, :card_age_warning_days, :created_at, :created_by, :updated_at, :updated_by)',
             [
-                'board_id'   => $lane->boardId,
-                'name'       => $lane->name,
-                'position'   => $lane->position,
-                'created_at' => $lane->createdAt,
-                'created_by' => $lane->createdBy,
-                'updated_at' => $lane->updatedAt,
-                'updated_by' => $lane->updatedBy,
+                'board_id'              => $lane->boardId,
+                'name'                  => $lane->name,
+                'position'              => $lane->position,
+                'show_card_age'         => $lane->showCardAge ? 1 : 0,
+                'card_age_warning_days' => $lane->cardAgeWarningDays,
+                'created_at'            => $lane->createdAt,
+                'created_by'            => $lane->createdBy,
+                'updated_at'            => $lane->updatedAt,
+                'updated_by'            => $lane->updatedBy,
             ]
         );
 
@@ -62,6 +64,21 @@ class SwimLaneRepository extends Repository
         );
     }
 
+    public function updateCardAgeSettings(int $id, bool $showCardAge, int $cardAgeWarningDays, string $updatedAt, string $updatedBy): void
+    {
+        $this->database->execute(
+            'UPDATE swim_lanes SET show_card_age = :show_card_age, card_age_warning_days = :card_age_warning_days,
+             updated_at = :updated_at, updated_by = :updated_by WHERE id = :id',
+            [
+                'show_card_age'         => $showCardAge ? 1 : 0,
+                'card_age_warning_days' => $cardAgeWarningDays,
+                'updated_at'            => $updatedAt,
+                'updated_by'            => $updatedBy,
+                'id'                    => $id,
+            ]
+        );
+    }
+
     public function updatePosition(int $id, int $position, string $updatedAt, string $updatedBy): void
     {
         $this->database->execute(
diff --git a/app/Views/boards/show.php b/app/Views/boards/show.php
index 766c423..156b8c3 100644
--- a/app/Views/boards/show.php
+++ b/app/Views/boards/show.php
@@ -84,12 +84,10 @@
 var KANBAN = {
   boardId:   <?= (int) $board->id ?>,
   boardSlug: "<?= e($board->slug) ?>",
-  cards: <?= $cardsJson ?>,
-  showCardAge: <?= $board->showCardAge ? 'true' : 'false' ?>,
-  cardAgeWarningDays: <?= (int) $board->cardAgeWarningDays ?>
+  cards: <?= $cardsJson ?>
 };
-var KANBAN_COLS  = <?= json_encode(array_map(fn($c) => ['id' => $c->id, 'name' => $c->name, 'position' => $c->position, 'show_card_count' => $c->showCardCount], $columns)) ?>;
-var KANBAN_LANES = <?= json_encode(array_map(fn($l) => ['id' => $l->id, 'name' => $l->name, 'position' => $l->position], $lanes)) ?>;
+var KANBAN_COLS  = <?= json_encode(array_map(fn($c) => ['id' => $c->id, 'name' => $c->name, 'position' => $c->position, 'show_card_count' => $c->showCardCount, 'show_card_age' => $c->showCardAge, 'card_age_warning_days' => $c->cardAgeWarningDays], $columns)) ?>;
+var KANBAN_LANES = <?= json_encode(array_map(fn($l) => ['id' => $l->id, 'name' => $l->name, 'position' => $l->position, 'show_card_age' => $l->showCardAge, 'card_age_warning_days' => $l->cardAgeWarningDays], $lanes)) ?>;
 </script>
 
 <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
diff --git a/app/Views/partials/settings-panel.php b/app/Views/partials/settings-panel.php
index 4bd5bc0..bf6a47e 100644
--- a/app/Views/partials/settings-panel.php
+++ b/app/Views/partials/settings-panel.php
@@ -28,20 +28,41 @@
       </div>
       <ul class="list-group settings-sortable" id="col-list">
         <?php foreach ($columns as $col): ?>
-        <li class="list-group-item d-flex align-items-center gap-2 py-2"
+        <li class="list-group-item py-2"
             data-id="<?= e((string) $col->id) ?>">
-          <i class="bi bi-grip-vertical text-muted drag-handle" style="cursor:grab;"></i>
-          <span class="flex-grow-1 col-label-text"><?= e($col->name) ?></span>
-          <div class="form-check form-switch m-0" title="Show card count in column header">
-            <input class="form-check-input col-count-toggle" type="checkbox" role="switch"
-                   <?= $col->showCardCount ? 'checked' : '' ?>>
+          <div class="d-flex align-items-center gap-2">
+            <i class="bi bi-grip-vertical text-muted drag-handle" style="cursor:grab;"></i>
+            <span class="flex-grow-1 col-label-text"><?= e($col->name) ?></span>
+            <div class="form-check form-switch m-0" title="Show card count in column header">
+              <input class="form-check-input col-count-toggle" type="checkbox" role="switch"
+                     <?= $col->showCardCount ? 'checked' : '' ?>>
+            </div>
+            <button class="btn btn-sm btn-link p-0 text-secondary btn-toggle-col-age" title="Card age settings">
+              <i class="bi bi-clock-history"></i>
+            </button>
+            <button class="btn btn-sm btn-link p-0 text-secondary btn-edit-col" title="Rename">
+              <i class="bi bi-pencil"></i>
+            </button>
+            <button class="btn btn-sm btn-link p-0 text-danger btn-delete-col" title="Delete">
+              <i class="bi bi-trash"></i>
+            </button>
+          </div>
+          <div class="col-age-settings d-none mt-2 ps-4">
+            <div class="form-check form-switch mb-1">
+              <input class="form-check-input col-age-toggle" type="checkbox" role="switch"
+                     id="col-age-toggle-<?= e((string) $col->id) ?>"
+                     <?= $col->showCardAge ? 'checked' : '' ?>>
+              <label class="form-check-label small" for="col-age-toggle-<?= e((string) $col->id) ?>">
+                Show "time in cell" tooltip &amp; mark overdue
+              </label>
+            </div>
+            <div class="input-group input-group-sm" style="max-width: 140px;">
+              <input type="number" min="0" step="1" class="form-control col-age-days"
+                     value="<?= e((string) $col->cardAgeWarningDays) ?>" placeholder="0">
+              <span class="input-group-text">days</span>
+            </div>
+            <div class="form-text">Overdue after this many days. 0 = no overdue marking.</div>
           </div>
-          <button class="btn btn-sm btn-link p-0 text-secondary btn-edit-col" title="Rename">
-            <i class="bi bi-pencil"></i>
-          </button>
-          <button class="btn btn-sm btn-link p-0 text-danger btn-delete-col" title="Delete">
-            <i class="bi bi-trash"></i>
-          </button>
         </li>
         <?php endforeach; ?>
       </ul>
@@ -64,43 +85,41 @@
       </div>
       <ul class="list-group settings-sortable" id="lane-list">
         <?php foreach ($lanes as $lane): ?>
-        <li class="list-group-item d-flex align-items-center gap-2 py-2"
+        <li class="list-group-item py-2"
             data-id="<?= e((string) $lane->id) ?>">
-          <i class="bi bi-grip-vertical text-muted drag-handle" style="cursor:grab;"></i>
-          <span class="flex-grow-1 lane-label-text"><?= e($lane->name) ?></span>
-          <button class="btn btn-sm btn-link p-0 text-secondary btn-edit-lane" title="Rename">
-            <i class="bi bi-pencil"></i>
-          </button>
-          <button class="btn btn-sm btn-link p-0 text-danger btn-delete-lane" title="Delete">
-            <i class="bi bi-trash"></i>
-          </button>
+          <div class="d-flex align-items-center gap-2">
+            <i class="bi bi-grip-vertical text-muted drag-handle" style="cursor:grab;"></i>
+            <span class="flex-grow-1 lane-label-text"><?= e($lane->name) ?></span>
+            <button class="btn btn-sm btn-link p-0 text-secondary btn-toggle-lane-age" title="Card age settings">
+              <i class="bi bi-clock-history"></i>
+            </button>
+            <button class="btn btn-sm btn-link p-0 text-secondary btn-edit-lane" title="Rename">
+              <i class="bi bi-pencil"></i>
+            </button>
+            <button class="btn btn-sm btn-link p-0 text-danger btn-delete-lane" title="Delete">
+              <i class="bi bi-trash"></i>
+            </button>
+          </div>
+          <div class="lane-age-settings d-none mt-2 ps-4">
+            <div class="form-check form-switch mb-1">
+              <input class="form-check-input lane-age-toggle" type="checkbox" role="switch"
+                     id="lane-age-toggle-<?= e((string) $lane->id) ?>"
+                     <?= $lane->showCardAge ? 'checked' : '' ?>>
+              <label class="form-check-label small" for="lane-age-toggle-<?= e((string) $lane->id) ?>">
+                Show "time in cell" tooltip &amp; mark overdue
+              </label>
+            </div>
+            <div class="input-group input-group-sm" style="max-width: 140px;">
+              <input type="number" min="0" step="1" class="form-control lane-age-days"
+                     value="<?= e((string) $lane->cardAgeWarningDays) ?>" placeholder="0">
+              <span class="input-group-text">days</span>
+            </div>
+            <div class="form-text">Overdue after this many days. 0 = no overdue marking.</div>
+          </div>
         </li>
         <?php endforeach; ?>
       </ul>
     </div>
 
-    <!-- Card age section -->
-    <div class="mb-2">
-      <strong class="small d-block mb-2">Card Age</strong>
-
-      <div class="form-check form-switch mb-2">
-        <input class="form-check-input" type="checkbox" role="switch" id="card-age-tooltip-toggle"
-               <?= $board->showCardAge ? 'checked' : '' ?>>
-        <label class="form-check-label small" for="card-age-tooltip-toggle">
-          Show "time in column/lane" tooltip on cards
-        </label>
-      </div>
-
-      <label for="card-age-warning-days" class="form-label small mb-1">
-        Mark cards as overdue after this many days in a column/lane
-      </label>
-      <div class="input-group input-group-sm" style="max-width: 160px;">
-        <input type="number" min="0" step="1" class="form-control" id="card-age-warning-days"
-               value="<?= e((string) $board->cardAgeWarningDays) ?>" placeholder="0">
-        <span class="input-group-text">days</span>
-      </div>
-      <div class="form-text">Set to 0 to disable.</div>
-    </div>
-
   </div>
 </div>
diff --git a/database/migrations/20260615_000004_add_card_age_settings_to_board_columns.php b/database/migrations/20260615_000004_add_card_age_settings_to_board_columns.php
new file mode 100644
index 0000000..7cb5ebb
--- /dev/null
+++ b/database/migrations/20260615_000004_add_card_age_settings_to_board_columns.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+use Core\Database;
+use Core\Migration;
+
+return new class extends Migration
+{
+    public function up(Database $database): void
+    {
+        $database->execute(
+            'ALTER TABLE board_columns ADD COLUMN show_card_age INTEGER NOT NULL DEFAULT 0'
+        );
+        $database->execute(
+            'ALTER TABLE board_columns ADD COLUMN card_age_warning_days INTEGER NOT NULL DEFAULT 0'
+        );
+    }
+
+    public function down(Database $database): void
+    {
+        // SQLite cannot drop columns without recreating the table.
+    }
+};
diff --git a/database/migrations/20260615_000005_add_card_age_settings_to_swim_lanes.php b/database/migrations/20260615_000005_add_card_age_settings_to_swim_lanes.php
new file mode 100644
index 0000000..62708d3
--- /dev/null
+++ b/database/migrations/20260615_000005_add_card_age_settings_to_swim_lanes.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+use Core\Database;
+use Core\Migration;
+
+return new class extends Migration
+{
+    public function up(Database $database): void
+    {
+        $database->execute(
+            'ALTER TABLE swim_lanes ADD COLUMN show_card_age INTEGER NOT NULL DEFAULT 0'
+        );
+        $database->execute(
+            'ALTER TABLE swim_lanes ADD COLUMN card_age_warning_days INTEGER NOT NULL DEFAULT 0'
+        );
+    }
+
+    public function down(Database $database): void
+    {
+        // SQLite cannot drop columns without recreating the table.
+    }
+};
diff --git a/database/migrations/20260615_000006_remove_card_age_settings_from_boards.php b/database/migrations/20260615_000006_remove_card_age_settings_from_boards.php
new file mode 100644
index 0000000..60bac69
--- /dev/null
+++ b/database/migrations/20260615_000006_remove_card_age_settings_from_boards.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+use Core\Database;
+use Core\Migration;
+
+return new class extends Migration
+{
+    /**
+     * Card age tooltip/overdue settings moved to board_columns and swim_lanes
+     * (configurable per column and per swim lane instead of per board).
+     */
+    public function up(Database $database): void
+    {
+        $database->execute('ALTER TABLE boards DROP COLUMN show_card_age');
+        $database->execute('ALTER TABLE boards DROP COLUMN card_age_warning_days');
+    }
+
+    public function down(Database $database): void
+    {
+        $database->execute('ALTER TABLE boards ADD COLUMN show_card_age INTEGER NOT NULL DEFAULT 0');
+        $database->execute('ALTER TABLE boards ADD COLUMN card_age_warning_days INTEGER NOT NULL DEFAULT 0');
+    }
+};
diff --git a/public/js/kanban-board.js b/public/js/kanban-board.js
index 8c62ab1..833a1e2 100644
--- a/public/js/kanban-board.js
+++ b/public/js/kanban-board.js
@@ -6,6 +6,8 @@
   var laneCollapseStorageKey = 'kanban_lane_collapsed_' + String(boardId);
   var collapsedLaneIds = loadCollapsedLaneIds();
   var columnShowCount = {};
+  var columnAgeSettings = {};
+  var laneAgeSettings = {};
   var searchState = {
     query: ''
   };
@@ -69,8 +71,26 @@
     return 'less than an hour';
   }
 
+  function effectiveCardAgeSettings(card) {
+    var colSettings = columnAgeSettings[String(card.column_id)] || { showCardAge: false, cardAgeWarningDays: 0 };
+    var laneSettings = laneAgeSettings[String(card.swim_lane_id)] || { showCardAge: false, cardAgeWarningDays: 0 };
+
+    var showCardAge = colSettings.showCardAge || laneSettings.showCardAge;
+
+    var warningDays = 0;
+    if (colSettings.showCardAge) {
+      warningDays = colSettings.cardAgeWarningDays;
+    } else if (laneSettings.showCardAge) {
+      warningDays = laneSettings.cardAgeWarningDays;
+    }
+
+    return { showCardAge: showCardAge, cardAgeWarningDays: warningDays };
+  }
+
   function applyCardAge(el, card) {
-    if (KANBAN.showCardAge) {
+    var settings = effectiveCardAgeSettings(card);
+
+    if (settings.showCardAge) {
       var age = formatAge(card.cell_entered_at);
       if (age) {
         el.title = 'In this column/lane for ' + age;
@@ -81,8 +101,8 @@
       el.removeAttribute('title');
     }
 
-    var isOverdue = KANBAN.cardAgeWarningDays > 0 &&
-      ageInDays(card.cell_entered_at) >= KANBAN.cardAgeWarningDays;
+    var isOverdue = settings.cardAgeWarningDays > 0 &&
+      ageInDays(card.cell_entered_at) >= settings.cardAgeWarningDays;
     el.classList.toggle('kanban-card-overdue', isOverdue);
   }
 
@@ -132,6 +152,21 @@
     });
   }
 
+  function initCardAgeSettings() {
+    KANBAN_COLS.forEach(function (col) {
+      columnAgeSettings[String(col.id)] = {
+        showCardAge: !!col.show_card_age,
+        cardAgeWarningDays: parseInt(col.card_age_warning_days, 10) || 0
+      };
+    });
+    KANBAN_LANES.forEach(function (lane) {
+      laneAgeSettings[String(lane.id)] = {
+        showCardAge: !!lane.show_card_age,
+        cardAgeWarningDays: parseInt(lane.card_age_warning_days, 10) || 0
+      };
+    });
+  }
+
   function loadCollapsedLaneIds() {
     var laneMap = {};
     try {
@@ -470,6 +505,7 @@
       grid.insertBefore(hdr, refNode);
 
       columnShowCount[String(col.id)] = false;
+      columnAgeSettings[String(col.id)] = { showCardAge: false, cardAgeWarningDays: 0 };
 
       var laneHeaders = grid.querySelectorAll('.kanban-lane-header');
       laneHeaders.forEach(function (lh) {
@@ -490,6 +526,7 @@
       document.querySelectorAll('.kanban-cell[data-col-id="' + colId + '"]').forEach(function (el) { el.remove(); });
       KANBAN.cards = KANBAN.cards.filter(function (c) { return String(c.column_id) !== String(colId); });
       delete columnShowCount[String(colId)];
+      delete columnAgeSettings[String(colId)];
       applyGridTemplate();
     },
     addLane: function (lane) {
@@ -507,6 +544,8 @@
       grid.appendChild(lh);
       bindLaneHeaderToggle(lh);
 
+      laneAgeSettings[String(lane.id)] = { showCardAge: false, cardAgeWarningDays: 0 };
+
       colHeaders.forEach(function (ch) {
         var cell = document.createElement('div');
         cell.className = 'kanban-cell';
@@ -526,6 +565,7 @@
       document.querySelector('.kanban-lane-header[data-lane-id="' + laneId + '"]').remove();
       document.querySelectorAll('.kanban-cell[data-lane-id="' + laneId + '"]').forEach(function (el) { el.remove(); });
       KANBAN.cards = KANBAN.cards.filter(function (c) { return String(c.swim_lane_id) !== String(laneId); });
+      delete laneAgeSettings[String(laneId)];
       if (collapsedLaneIds[String(laneId)]) {
         delete collapsedLaneIds[String(laneId)];
         saveCollapsedLaneIds();
@@ -543,14 +583,24 @@
       columnShowCount[String(colId)] = show;
       refreshColumnCount(colId);
     },
-    setCardAgeSettings: function (showCardAge, cardAgeWarningDays) {
-      KANBAN.showCardAge = !!showCardAge;
-      KANBAN.cardAgeWarningDays = parseInt(cardAgeWarningDays, 10) || 0;
+    setColumnCardAge: function (colId, showCardAge, cardAgeWarningDays) {
+      columnAgeSettings[String(colId)] = {
+        showCardAge: !!showCardAge,
+        cardAgeWarningDays: parseInt(cardAgeWarningDays, 10) || 0
+      };
+      refreshAllCardAges();
+    },
+    setLaneCardAge: function (laneId, showCardAge, cardAgeWarningDays) {
+      laneAgeSettings[String(laneId)] = {
+        showCardAge: !!showCardAge,
+        cardAgeWarningDays: parseInt(cardAgeWarningDays, 10) || 0
+      };
       refreshAllCardAges();
     }
   };
 
   applyGridTemplate();
+  initCardAgeSettings();
   renderCards();
   initSortables();
   initJobSearch();
diff --git a/public/js/kanban-settings.js b/public/js/kanban-settings.js
index d3a1344..0a13798 100644
--- a/public/js/kanban-settings.js
+++ b/public/js/kanban-settings.js
@@ -45,22 +45,72 @@
     });
   }
 
-  function buildListItem(id, name, editClass, deleteClass, labelClass, countToggle) {
+  function buildListItem(id, name, editClass, deleteClass, labelClass, countToggle, agePrefix) {
     var li = document.createElement('li');
-    li.className   = 'list-group-item d-flex align-items-center gap-2 py-2';
+    li.className   = 'list-group-item py-2';
     li.dataset.id  = id;
     li.innerHTML   =
-      '<i class="bi bi-grip-vertical text-muted drag-handle" style="cursor:grab;"></i>' +
-      '<span class="flex-grow-1 ' + labelClass + '">' + esc(name) + '</span>' +
-      (countToggle ?
-        '<div class="form-check form-switch m-0" title="Show card count in column header">' +
-          '<input class="form-check-input col-count-toggle" type="checkbox" role="switch">' +
-        '</div>' : '') +
-      '<button class="btn btn-sm btn-link p-0 text-secondary ' + editClass + '" title="Rename"><i class="bi bi-pencil"></i></button>' +
-      '<button class="btn btn-sm btn-link p-0 text-danger '  + deleteClass + '" title="Delete"><i class="bi bi-trash"></i></button>';
+      '<div class="d-flex align-items-center gap-2">' +
+        '<i class="bi bi-grip-vertical text-muted drag-handle" style="cursor:grab;"></i>' +
+        '<span class="flex-grow-1 ' + labelClass + '">' + esc(name) + '</span>' +
+        (countToggle ?
+          '<div class="form-check form-switch m-0" title="Show card count in column header">' +
+            '<input class="form-check-input col-count-toggle" type="checkbox" role="switch">' +
+          '</div>' : '') +
+        '<button class="btn btn-sm btn-link p-0 text-secondary btn-toggle-' + agePrefix + '-age" title="Card age settings"><i class="bi bi-clock-history"></i></button>' +
+        '<button class="btn btn-sm btn-link p-0 text-secondary ' + editClass + '" title="Rename"><i class="bi bi-pencil"></i></button>' +
+        '<button class="btn btn-sm btn-link p-0 text-danger '  + deleteClass + '" title="Delete"><i class="bi bi-trash"></i></button>' +
+      '</div>' +
+      '<div class="' + agePrefix + '-age-settings d-none mt-2 ps-4">' +
+        '<div class="form-check form-switch mb-1">' +
+          '<input class="form-check-input ' + agePrefix + '-age-toggle" type="checkbox" role="switch">' +
+          '<label class="form-check-label small">Show "time in cell" tooltip &amp; mark overdue</label>' +
+        '</div>' +
+        '<div class="input-group input-group-sm" style="max-width: 140px;">' +
+          '<input type="number" min="0" step="1" class="form-control ' + agePrefix + '-age-days" value="0" placeholder="0">' +
+          '<span class="input-group-text">days</span>' +
+        '</div>' +
+        '<div class="form-text">Overdue after this many days. 0 = no overdue marking.</div>' +
+      '</div>';
     return li;
   }
 
+  /* ── Card age settings (per column / per swim lane) ────────── */
+  function bindAgeSettings(li, prefix, urlBase, setter) {
+    var toggleBtn   = li.querySelector('.btn-toggle-' + prefix + '-age');
+    var settingsDiv = li.querySelector('.' + prefix + '-age-settings');
+    if (toggleBtn && settingsDiv) {
+      toggleBtn.addEventListener('click', function () {
+        settingsDiv.classList.toggle('d-none');
+      });
+    }
+
+    var ageToggle = li.querySelector('.' + prefix + '-age-toggle');
+    var ageDays   = li.querySelector('.' + prefix + '-age-days');
+    if (!ageToggle || !ageDays) return;
+
+    function save() {
+      var show = ageToggle.checked;
+      var days = parseInt(ageDays.value, 10);
+      if (isNaN(days) || days < 0) days = 0;
+      ageDays.value = days;
+
+      post(urlBase + li.dataset.id + '/card-age-settings', {
+        show_card_age: show ? '1' : '0',
+        card_age_warning_days: days
+      }, function (res) {
+        if (!res.ok) {
+          alert(res.error || 'Update failed');
+          return;
+        }
+        setter(li.dataset.id, res.show_card_age, res.card_age_warning_days);
+      });
+    }
+
+    ageToggle.addEventListener('change', save);
+    ageDays.addEventListener('change', save);
+  }
+
   function esc(s) {
     return String(s)
       .replace(/&/g, '&amp;').replace(/</g, '&lt;')
@@ -104,7 +154,7 @@
       if (!res.ok) { alert(res.error || 'Failed'); return; }
       document.getElementById('col-add-form').classList.add('d-none');
       document.getElementById('col-add-input').value = '';
-      var li = buildListItem(res.id, res.name, 'btn-edit-col', 'btn-delete-col', 'col-label-text', true);
+      var li = buildListItem(res.id, res.name, 'btn-edit-col', 'btn-delete-col', 'col-label-text', true, 'col');
       document.getElementById('col-list').appendChild(li);
       bindColItem(li);
       window.KanbanBoard.addColumn(res);
@@ -151,6 +201,7 @@
         });
       });
     }
+    bindAgeSettings(li, 'col', '/columns/', window.KanbanBoard.setColumnCardAge);
   }
 
   document.querySelectorAll('#col-list li').forEach(bindColItem);
@@ -175,7 +226,7 @@
       if (!res.ok) { alert(res.error || 'Failed'); return; }
       document.getElementById('lane-add-form').classList.add('d-none');
       document.getElementById('lane-add-input').value = '';
-      var li = buildListItem(res.id, res.name, 'btn-edit-lane', 'btn-delete-lane', 'lane-label-text');
+      var li = buildListItem(res.id, res.name, 'btn-edit-lane', 'btn-delete-lane', 'lane-label-text', false, 'lane');
       document.getElementById('lane-list').appendChild(li);
       bindLaneItem(li);
       window.KanbanBoard.addLane(res);
@@ -208,38 +259,11 @@
         }
       });
     });
+    bindAgeSettings(li, 'lane', '/swimlanes/', window.KanbanBoard.setLaneCardAge);
   }
 
   document.querySelectorAll('#lane-list li').forEach(bindLaneItem);
 
-  /* ═══════════════════════════════════════════════════════════
-     CARD AGE
-  ═══════════════════════════════════════════════════════════ */
-
-  var cardAgeTooltipToggle = document.getElementById('card-age-tooltip-toggle');
-  var cardAgeWarningDays   = document.getElementById('card-age-warning-days');
-
-  function saveCardAgeSettings() {
-    var showCardAge = cardAgeTooltipToggle.checked;
-    var warningDays = parseInt(cardAgeWarningDays.value, 10);
-    if (isNaN(warningDays) || warningDays < 0) warningDays = 0;
-    cardAgeWarningDays.value = warningDays;
-
-    post('/boards/' + boardId + '/card-age-settings', {
-      show_card_age: showCardAge ? '1' : '0',
-      card_age_warning_days: warningDays
-    }, function (res) {
-      if (!res.ok) {
-        alert(res.error || 'Update failed');
-        return;
-      }
-      window.KanbanBoard.setCardAgeSettings(res.show_card_age, res.card_age_warning_days);
-    });
-  }
-
-  cardAgeTooltipToggle.addEventListener('change', saveCardAgeSettings);
-  cardAgeWarningDays.addEventListener('change', saveCardAgeSettings);
-
   /* ── Inline rename helper ─────────────────────────────────── */
   function startRename(li, labelSel, saveCb) {
     var span = li.querySelector(labelSel);
diff --git a/routes/web.php b/routes/web.php
index 608ee0d..af2d9ba 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -21,7 +21,6 @@ $router->get('/board/{slug}',         [BoardsController::class, 'show']);
 $router->get('/board/{slug}/edit',    [BoardsController::class, 'edit']);
 $router->post('/board/{slug}/update', [BoardsController::class, 'update']);
 $router->post('/board/{slug}/delete', [BoardsController::class, 'destroy']);
-$router->post('/boards/{id}/card-age-settings', [BoardsController::class, 'updateCardAgeSettings']);
 
 // Cards (JSON API)
 $router->post('/cards',              [CardsController::class, 'store']);
@@ -32,12 +31,14 @@ $router->post('/cards/{id}',         [CardsController::class, 'update']);
 // Columns (JSON API) — /columns/reorder MUST be before /columns/{id}
 $router->post('/columns/reorder',      [ColumnsController::class, 'reorder']);
 $router->post('/columns/{id}/toggle-count', [ColumnsController::class, 'toggleCount']);
+$router->post('/columns/{id}/card-age-settings', [ColumnsController::class, 'updateCardAgeSettings']);
 $router->post('/columns/{id}/delete',  [ColumnsController::class, 'destroy']);
 $router->post('/columns/{id}',         [ColumnsController::class, 'update']);
 $router->post('/columns',              [ColumnsController::class, 'store']);
 
 // Swim lanes (JSON API) — /swimlanes/reorder MUST be before /swimlanes/{id}
 $router->post('/swimlanes/reorder',     [SwimLanesController::class, 'reorder']);
+$router->post('/swimlanes/{id}/card-age-settings', [SwimLanesController::class, 'updateCardAgeSettings']);
 $router->post('/swimlanes/{id}/delete', [SwimLanesController::class, 'destroy']);
 $router->post('/swimlanes/{id}',        [SwimLanesController::class, 'update']);
 $router->post('/swimlanes',             [SwimLanesController::class, 'store']);