diff --git a/frontend/src/components/maps/LocationMapBottomSheet.jsx b/frontend/src/components/maps/LocationMapBottomSheet.jsx
index f9cddfc..b6b8a6c 100644
--- a/frontend/src/components/maps/LocationMapBottomSheet.jsx
+++ b/frontend/src/components/maps/LocationMapBottomSheet.jsx
@@ -32,6 +32,7 @@ export default function LocationMapBottomSheet({
   savingAction,
   hasUnsavedChanges,
   mapState,
+  mapSize,
   onAddObject,
   onUndo,
   onRedo,
@@ -75,6 +76,12 @@ export default function LocationMapBottomSheet({
   const changedLayerCount = DISPLAY_CONTROLS.filter(([key]) => filters[key] !== DEFAULT_MAP_FILTERS[key]).length;
   const unmappedItemPreview = visibleUnmappedItems.slice(0, 8);
   const hiddenUnmappedItemCount = visibleUnmappedItems.length - unmappedItemPreview.length;
+  const selectedWidth = Number(selectedObject?.width) || 40;
+  const selectedHeight = Number(selectedObject?.height) || 40;
+  const maxX = Math.max(0, Math.round((mapSize?.width || selectedWidth) - selectedWidth));
+  const maxY = Math.max(0, Math.round((mapSize?.height || selectedHeight) - selectedHeight));
+  const maxWidth = Math.max(40, Math.round(mapSize?.width || selectedWidth));
+  const maxHeight = Math.max(40, Math.round(mapSize?.height || selectedHeight));
   const saveDraftLabel = savingAction === "save" ? "Saving..." : "Save Draft";
   const publishLabel = savingAction === "publish" ? "Publishing..." : "Publish";
   const showSelectedZoneItems = () => {
@@ -234,6 +241,9 @@ export default function LocationMapBottomSheet({
               X
               <input
                 type="number"
+                min="0"
+                max={maxX}
+                step="1"
                 value={Math.round(selectedObject.x)}
                 disabled={saving}
                 onChange={(event) => onObjectField("x", Number(event.target.value))}
@@ -243,6 +253,9 @@ export default function LocationMapBottomSheet({
               Y
               <input
                 type="number"
+                min="0"
+                max={maxY}
+                step="1"
                 value={Math.round(selectedObject.y)}
                 disabled={saving}
                 onChange={(event) => onObjectField("y", Number(event.target.value))}
@@ -252,6 +265,9 @@ export default function LocationMapBottomSheet({
               W
               <input
                 type="number"
+                min="40"
+                max={maxWidth}
+                step="1"
                 value={Math.round(selectedObject.width)}
                 disabled={saving}
                 onChange={(event) => onObjectField("width", Number(event.target.value))}
@@ -261,6 +277,9 @@ export default function LocationMapBottomSheet({
               H
               <input
                 type="number"
+                min="40"
+                max={maxHeight}
+                step="1"
                 value={Math.round(selectedObject.height)}
                 disabled={saving}
                 onChange={(event) => onObjectField("height", Number(event.target.value))}
diff --git a/frontend/src/pages/LocationMapManager.jsx b/frontend/src/pages/LocationMapManager.jsx
index 330a1a4..e351a0b 100644
--- a/frontend/src/pages/LocationMapManager.jsx
+++ b/frontend/src/pages/LocationMapManager.jsx
@@ -543,6 +543,7 @@ export default function LocationMapManager() {
               savingAction={savingAction}
               hasUnsavedChanges={hasUnsavedChanges}
               mapState={mapState}
+              mapSize={mapSize}
               onAddObject={handleAddObject}
               onUndo={handleUndo}
               onRedo={handleRedo}
diff --git a/frontend/tests/location-map-manager.spec.ts b/frontend/tests/location-map-manager.spec.ts
index 5d355e8..5e954fa 100644
--- a/frontend/tests/location-map-manager.spec.ts
+++ b/frontend/tests/location-map-manager.spec.ts
@@ -596,6 +596,61 @@ test("admin selecting an object does not mark a draft dirty until it changes", a
   await expect(page.getByRole("button", { name: "Undo" })).toBeEnabled();
 });
 
+test("admin object numeric fields expose map bounds and clamp edits", async ({ page }) => {
+  await mockMapShell(page);
+
+  const mapState = draftMapState([
+    {
+      id: 1352,
+      location_map_id: 900,
+      zone_id: 501,
+      zone_name: "Bakery",
+      type: "zone",
+      label: "Bakery",
+      x: 40,
+      y: 40,
+      width: 260,
+      height: 160,
+      rotation: 0,
+      locked: false,
+      visible: true,
+      sort_order: 1,
+    },
+  ], true);
+
+  await page.route("**/households/1/locations/10/map", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify(mapState),
+    });
+  });
+
+  await page.goto("/stores/100/locations/10/map");
+  await page.getByRole("button", { name: "Continue Editing" }).click();
+  await page.getByRole("button", { name: "Edit Objects" }).click();
+  await page.locator(".location-map-object", { hasText: "Bakery" }).locator("rect").first().click();
+
+  const xInput = page.getByRole("spinbutton", { name: "X" });
+  const yInput = page.getByRole("spinbutton", { name: "Y" });
+  const widthInput = page.getByRole("spinbutton", { name: "W" });
+  const heightInput = page.getByRole("spinbutton", { name: "H" });
+
+  await expect(xInput).toHaveAttribute("min", "0");
+  await expect(xInput).toHaveAttribute("max", "740");
+  await expect(yInput).toHaveAttribute("max", "540");
+  await expect(widthInput).toHaveAttribute("min", "40");
+  await expect(widthInput).toHaveAttribute("max", "1000");
+  await expect(heightInput).toHaveAttribute("max", "700");
+
+  await xInput.fill("9999");
+  await expect(xInput).toHaveValue("740");
+
+  await widthInput.fill("5000");
+  await expect(widthInput).toHaveValue("1000");
+  await expect(xInput).toHaveValue("0");
+});
+
 test("admin save progress locks draft controls", async ({ page }) => {
   await mockMapShell(page);