diff --git a/frontend/src/components/maps/LocationMapDialogs.jsx b/frontend/src/components/maps/LocationMapDialogs.jsx
new file mode 100644
index 0000000..fbdb31c
--- /dev/null
+++ b/frontend/src/components/maps/LocationMapDialogs.jsx
@@ -0,0 +1,48 @@
+import ConfirmBuyModal from "../modals/ConfirmBuyModal";
+import ConfirmSlideModal from "../modals/ConfirmSlideModal";
+import { getMapObjectDisplayLabel } from "../../lib/locationMapUtils";
+
+export default function LocationMapDialogs({
+  buyModalItem,
+  buyModalItems,
+  onBuyCancel,
+  onBuyConfirm,
+  onBuyNavigate,
+  pendingDeleteObject,
+  onDeleteClose,
+  onDeleteConfirm,
+  pendingLeaveTarget,
+  onLeaveClose,
+  onLeaveConfirm,
+}) {
+  return (
+    <>
+      {buyModalItem ? (
+        <ConfirmBuyModal
+          item={buyModalItem}
+          allItems={buyModalItems}
+          onNavigate={onBuyNavigate}
+          onCancel={onBuyCancel}
+          onConfirm={onBuyConfirm}
+        />
+      ) : null}
+
+      <ConfirmSlideModal
+        isOpen={Boolean(pendingDeleteObject)}
+        title={`Delete ${getMapObjectDisplayLabel(pendingDeleteObject, "this map area")}?`}
+        description="This removes the area from the draft map. Save the draft after deleting to keep the change."
+        confirmLabel="Delete Area"
+        onClose={onDeleteClose}
+        onConfirm={onDeleteConfirm}
+      />
+      <ConfirmSlideModal
+        isOpen={Boolean(pendingLeaveTarget)}
+        title="Leave with unsaved changes?"
+        description="Your draft edits are only on this screen right now. Save the draft before leaving if you want to keep them."
+        confirmLabel="Leave Map"
+        onClose={onLeaveClose}
+        onConfirm={onLeaveConfirm}
+      />
+    </>
+  );
+}
diff --git a/frontend/src/hooks/useLocationMapBuying.js b/frontend/src/hooks/useLocationMapBuying.js
new file mode 100644
index 0000000..7f15b85
--- /dev/null
+++ b/frontend/src/hooks/useLocationMapBuying.js
@@ -0,0 +1,145 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { getItemByName, markBought } from "../api/list";
+import getApiErrorMessage from "../lib/getApiErrorMessage";
+
+const EMPTY_MAP_ITEMS = [];
+
+function getNextMapBuyItem(items, currentIndex, excludedItemId) {
+  const remainingItems = items.filter((item) => item.id !== excludedItemId);
+  if (!remainingItems.length) return null;
+  return remainingItems[Math.min(Math.max(currentIndex, 0), remainingItems.length - 1)];
+}
+
+function getLocallyReducedMapItem(item, quantity) {
+  const currentQuantity = Number(item.quantity || 1);
+  const boughtQuantity = Math.max(1, Number(quantity || 1));
+  return {
+    ...item,
+    quantity: Math.max(1, currentQuantity - boughtQuantity),
+  };
+}
+
+function getLocallyBoughtMapItem(item) {
+  return {
+    ...item,
+    bought: true,
+  };
+}
+
+export default function useLocationMapBuying({
+  activeHouseholdId,
+  locationId,
+  selectedObject,
+  selectedZoneItems = EMPTY_MAP_ITEMS,
+  setMapState,
+  toast,
+  visibleUnmappedItems = EMPTY_MAP_ITEMS,
+}) {
+  const [buyModalItem, setBuyModalItem] = useState(null);
+  const mapBuyScopeRef = useRef({ activeHouseholdId: null, locationId: null });
+  const buyModalItems = useMemo(
+    () => (selectedObject ? selectedZoneItems : visibleUnmappedItems).filter((item) => !item.bought),
+    [selectedObject, selectedZoneItems, visibleUnmappedItems]
+  );
+
+  const updateMapItems = useCallback((updater) => {
+    setMapState((currentState) => {
+      if (!currentState) return currentState;
+      const currentItems = currentState.items || EMPTY_MAP_ITEMS;
+      return { ...currentState, items: updater(currentItems) };
+    });
+  }, [setMapState]);
+
+  useEffect(() => {
+    mapBuyScopeRef.current = {
+      activeHouseholdId,
+      locationId,
+    };
+  }, [activeHouseholdId, locationId]);
+
+  useEffect(() => {
+    setBuyModalItem(null);
+  }, [activeHouseholdId, locationId]);
+
+  const isCurrentMapBuyScope = useCallback((scopedHouseholdId, scopedLocationId) => (
+    String(mapBuyScopeRef.current.activeHouseholdId || "") === String(scopedHouseholdId || "") &&
+    String(mapBuyScopeRef.current.locationId || "") === String(scopedLocationId || "")
+  ), []);
+
+  const handleMapBuyCancel = useCallback(() => {
+    setBuyModalItem(null);
+  }, []);
+
+  const handleMapBuyNavigate = useCallback((item) => {
+    setBuyModalItem(item);
+  }, []);
+
+  const handleMapBuyConfirm = useCallback(async (quantity) => {
+    if (!activeHouseholdId || !locationId || !buyModalItem) {
+      setBuyModalItem(null);
+      return;
+    }
+
+    const scopedHouseholdId = activeHouseholdId;
+    const scopedLocationId = locationId;
+    const item = buyModalItems.find((candidate) => candidate.id === buyModalItem.id) || buyModalItem;
+
+    try {
+      const currentIndex = buyModalItems.findIndex((candidate) => candidate.id === item.id);
+      const resolvedIndex = currentIndex >= 0 ? currentIndex : 0;
+
+      await markBought(scopedHouseholdId, scopedLocationId, item.item_name, quantity, true);
+      if (!isCurrentMapBuyScope(scopedHouseholdId, scopedLocationId)) return;
+
+      let nextBuyModalItems = buyModalItems;
+      if (quantity >= item.quantity) {
+        nextBuyModalItems = buyModalItems.filter((candidate) => candidate.id !== item.id);
+        updateMapItems((currentItems) =>
+          currentItems.map((candidate) => (
+            candidate.id === item.id ? getLocallyBoughtMapItem(candidate) : candidate
+          ))
+        );
+      } else {
+        let updatedItem;
+        try {
+          const response = await getItemByName(scopedHouseholdId, scopedLocationId, item.item_name);
+          if (!isCurrentMapBuyScope(scopedHouseholdId, scopedLocationId)) return;
+          updatedItem = response.data || getLocallyReducedMapItem(item, quantity);
+        } catch {
+          if (!isCurrentMapBuyScope(scopedHouseholdId, scopedLocationId)) return;
+          updatedItem = getLocallyReducedMapItem(item, quantity);
+          toast.info("Updated item locally", "Latest quantity will sync when the map reloads.");
+        }
+        nextBuyModalItems = buyModalItems.map((candidate) => (candidate.id === item.id ? updatedItem : candidate));
+
+        updateMapItems((currentItems) =>
+          currentItems.map((candidate) => (candidate.id === item.id ? updatedItem : candidate))
+        );
+      }
+      setBuyModalItem(getNextMapBuyItem(nextBuyModalItems, resolvedIndex, item.id));
+
+      toast.success("Marked item bought", `Marked item ${item.item_name} as bought`);
+    } catch (error) {
+      if (!isCurrentMapBuyScope(scopedHouseholdId, scopedLocationId)) return;
+      const message = getApiErrorMessage(error, "Failed to mark item as bought");
+      toast.error("Mark item bought failed", `Mark item bought failed: ${message}`);
+    }
+  }, [
+    activeHouseholdId,
+    buyModalItem,
+    buyModalItems,
+    isCurrentMapBuyScope,
+    locationId,
+    toast,
+    updateMapItems,
+  ]);
+
+  return {
+    buyModalItem,
+    buyModalItems,
+    handleMapBuyCancel,
+    handleMapBuyConfirm,
+    handleMapBuyNavigate,
+    setBuyModalItem,
+  };
+}
diff --git a/frontend/src/hooks/useLocationMapDerivedState.js b/frontend/src/hooks/useLocationMapDerivedState.js
new file mode 100644
index 0000000..dd912df
--- /dev/null
+++ b/frontend/src/hooks/useLocationMapDerivedState.js
@@ -0,0 +1,83 @@
+import { useMemo } from "react";
+import {
+  DEFAULT_MAP_SIZE,
+  getObjectKey,
+  itemMatchesMapFilters,
+  itemsForZone,
+  mapForMode,
+  unmappedItems,
+} from "../lib/locationMapUtils";
+
+const EMPTY_MAP_ITEMS = [];
+
+export default function useLocationMapDerivedState({
+  filters,
+  mapDraft,
+  mapState,
+  mode,
+  objects,
+  previewDraft,
+  selectedObjectKey,
+  username,
+}) {
+  const activeMap = useMemo(
+    () => mapForMode(mapState, mode, previewDraft),
+    [mapState, mode, previewDraft]
+  );
+  const mapItems = mapState?.items || EMPTY_MAP_ITEMS;
+  const selectedObject = useMemo(
+    () => objects.find((object) => getObjectKey(object) === selectedObjectKey) || null,
+    [objects, selectedObjectKey]
+  );
+  const selectedZoneItems = useMemo(
+    () => selectedObject?.zone_id
+      ? itemsForZone(mapItems, selectedObject.zone_id, filters, username)
+      : EMPTY_MAP_ITEMS,
+    [filters, mapItems, selectedObject?.zone_id, username]
+  );
+  const visibleUnmappedItems = useMemo(
+    () => unmappedItems(mapItems, filters, username),
+    [filters, mapItems, username]
+  );
+  const { visibleAssignedItemCount, unmappedItemCount } = useMemo(() => {
+    let nextVisibleAssignedItemCount = 0;
+    let nextUnmappedItemCount = 0;
+
+    mapItems.forEach((item) => {
+      if (!item.zone_id) {
+        nextUnmappedItemCount += 1;
+        return;
+      }
+      if (itemMatchesMapFilters(item, filters, username)) {
+        nextVisibleAssignedItemCount += 1;
+      }
+    });
+
+    return {
+      visibleAssignedItemCount: nextVisibleAssignedItemCount,
+      unmappedItemCount: nextUnmappedItemCount,
+    };
+  }, [filters, mapItems, username]);
+  const hiddenAreaCount = useMemo(
+    () => objects.filter((object) => object.visible === false).length,
+    [objects]
+  );
+  const mapSize = useMemo(
+    () => ({
+      width: mapDraft.width || activeMap?.width || DEFAULT_MAP_SIZE.width,
+      height: mapDraft.height || activeMap?.height || DEFAULT_MAP_SIZE.height,
+    }),
+    [activeMap?.height, activeMap?.width, mapDraft.height, mapDraft.width]
+  );
+
+  return {
+    hiddenAreaCount,
+    mapItems,
+    mapSize,
+    selectedObject,
+    selectedZoneItems,
+    unmappedItemCount,
+    visibleAssignedItemCount,
+    visibleUnmappedItems,
+  };
+}
diff --git a/frontend/src/pages/LocationMapManager.jsx b/frontend/src/pages/LocationMapManager.jsx
index fb56bea..dc6b749 100644
--- a/frontend/src/pages/LocationMapManager.jsx
+++ b/frontend/src/pages/LocationMapManager.jsx
@@ -1,11 +1,11 @@
-import { useCallback, useContext, useEffect, useMemo, useRef, useState } from "react";
+import { useCallback, useContext, useEffect, useRef } from "react";
 import { useLocation, useNavigate, useParams } from "react-router-dom";
-import { getItemByName, markBought } from "../api/list";
 import { AuthContext } from "../context/AuthContext";
 import { HouseholdContext } from "../context/HouseholdContext";
 import { StoreContext } from "../context/StoreContext";
 import LocationMapBottomSheet from "../components/maps/LocationMapBottomSheet";
 import LocationMapCanvas from "../components/maps/LocationMapCanvas";
+import LocationMapDialogs from "../components/maps/LocationMapDialogs";
 import LocationMapSetupPanel from "../components/maps/LocationMapSetupPanel";
 import {
   LocationMapLoadErrorState,
@@ -13,51 +13,17 @@ import {
 } from "../components/maps/LocationMapStateViews";
 import LocationMapToolbar from "../components/maps/LocationMapToolbar";
 import LocationMapTopbar from "../components/maps/LocationMapTopbar";
-import ConfirmBuyModal from "../components/modals/ConfirmBuyModal";
-import ConfirmSlideModal from "../components/modals/ConfirmSlideModal";
 import useActionToast from "../hooks/useActionToast";
+import useLocationMapDerivedState from "../hooks/useLocationMapDerivedState";
 import useLocationMapDraftActions from "../hooks/useLocationMapDraftActions";
 import useLocationMapDraftState from "../hooks/useLocationMapDraftState";
+import useLocationMapBuying from "../hooks/useLocationMapBuying";
 import useLocationMapObjectActions from "../hooks/useLocationMapObjectActions";
 import useLocationMapViewControls from "../hooks/useLocationMapViewControls";
 import useUnsavedMapLeaveGuard from "../hooks/useUnsavedMapLeaveGuard";
-import {
-  DEFAULT_MAP_SIZE,
-  getMapObjectDisplayLabel,
-  getMapStatus,
-  getObjectKey,
-  itemMatchesMapFilters,
-  itemsForZone,
-  mapForMode,
-  unmappedItems,
-} from "../lib/locationMapUtils";
-import getApiErrorMessage from "../lib/getApiErrorMessage";
+import { getMapStatus } from "../lib/locationMapUtils";
 import "../styles/pages/LocationMapManager.css";
 
-const EMPTY_MAP_ITEMS = [];
-
-function getNextMapBuyItem(items, currentIndex, excludedItemId) {
-  const remainingItems = items.filter((item) => item.id !== excludedItemId);
-  if (!remainingItems.length) return null;
-  return remainingItems[Math.min(Math.max(currentIndex, 0), remainingItems.length - 1)];
-}
-
-function getLocallyReducedMapItem(item, quantity) {
-  const currentQuantity = Number(item.quantity || 1);
-  const boughtQuantity = Math.max(1, Number(quantity || 1));
-  return {
-    ...item,
-    quantity: Math.max(1, currentQuantity - boughtQuantity),
-  };
-}
-
-function getLocallyBoughtMapItem(item) {
-  return {
-    ...item,
-    bought: true,
-  };
-}
-
 export default function LocationMapManager() {
   const { storeId, locationId } = useParams();
   const navigate = useNavigate();
@@ -67,8 +33,6 @@ export default function LocationMapManager() {
   const { username } = useContext(AuthContext);
   const { activeHousehold, loading: householdLoading, hasLoaded } = useContext(HouseholdContext);
   const { stores, activeStore, setActiveStore } = useContext(StoreContext);
-  const [buyModalItem, setBuyModalItem] = useState(null);
-  const mapBuyScopeRef = useRef({ activeHouseholdId: null, locationId: null });
 
   const {
     beginSaving,
@@ -117,146 +81,43 @@ export default function LocationMapManager() {
 
   const location = mapState?.location || stores.find((store) => String(store.id) === String(locationId));
   const canManage = Boolean(mapState?.can_manage ?? ["owner", "admin"].includes(activeHousehold?.role));
-  const activeMap = useMemo(
-    () => mapForMode(mapState, mode, previewDraft),
-    [mapState, mode, previewDraft]
-  );
-  const mapItems = mapState?.items || EMPTY_MAP_ITEMS;
-  const selectedObject = useMemo(
-    () => objects.find((object) => getObjectKey(object) === selectedObjectKey) || null,
-    [objects, selectedObjectKey]
-  );
-  const selectedZoneItems = useMemo(
-    () => selectedObject?.zone_id
-      ? itemsForZone(mapItems, selectedObject.zone_id, filters, username)
-      : EMPTY_MAP_ITEMS,
-    [filters, mapItems, selectedObject?.zone_id, username]
-  );
-  const visibleUnmappedItems = useMemo(
-    () => unmappedItems(mapItems, filters, username),
-    [filters, mapItems, username]
-  );
-  const buyModalItems = useMemo(
-    () => (selectedObject ? selectedZoneItems : visibleUnmappedItems).filter((item) => !item.bought),
-    [selectedObject, selectedZoneItems, visibleUnmappedItems]
-  );
-  const { visibleAssignedItemCount, unmappedItemCount } = useMemo(() => {
-    let nextVisibleAssignedItemCount = 0;
-    let nextUnmappedItemCount = 0;
-
-    mapItems.forEach((item) => {
-      if (!item.zone_id) {
-        nextUnmappedItemCount += 1;
-        return;
-      }
-      if (itemMatchesMapFilters(item, filters, username)) {
-        nextVisibleAssignedItemCount += 1;
-      }
-    });
-
-    return {
-      visibleAssignedItemCount: nextVisibleAssignedItemCount,
-      unmappedItemCount: nextUnmappedItemCount,
-    };
-  }, [filters, mapItems, username]);
-  const hiddenAreaCount = useMemo(
-    () => objects.filter((object) => object.visible === false).length,
-    [objects]
-  );
+  const {
+    hiddenAreaCount,
+    mapItems,
+    mapSize,
+    selectedObject,
+    selectedZoneItems,
+    unmappedItemCount,
+    visibleAssignedItemCount,
+    visibleUnmappedItems,
+  } = useLocationMapDerivedState({
+    filters,
+    mapDraft,
+    mapState,
+    mode,
+    objects,
+    previewDraft,
+    selectedObjectKey,
+    username,
+  });
+  const {
+    buyModalItem,
+    buyModalItems,
+    handleMapBuyCancel,
+    handleMapBuyConfirm,
+    handleMapBuyNavigate,
+    setBuyModalItem,
+  } = useLocationMapBuying({
+    activeHouseholdId: activeHousehold?.id,
+    locationId,
+    selectedObject,
+    selectedZoneItems,
+    setMapState,
+    toast,
+    visibleUnmappedItems,
+  });
   const shouldGuardLeave = canManage && hasUnsavedChanges;
 
-  const updateMapItems = useCallback((updater) => {
-    setMapState((currentState) => {
-      if (!currentState) return currentState;
-      const currentItems = currentState.items || EMPTY_MAP_ITEMS;
-      return { ...currentState, items: updater(currentItems) };
-    });
-  }, [setMapState]);
-
-  useEffect(() => {
-    mapBuyScopeRef.current = {
-      activeHouseholdId: activeHousehold?.id,
-      locationId,
-    };
-  }, [activeHousehold?.id, locationId]);
-
-  const isCurrentMapBuyScope = useCallback((activeHouseholdId, scopedLocationId) => (
-    String(mapBuyScopeRef.current.activeHouseholdId || "") === String(activeHouseholdId || "") &&
-    String(mapBuyScopeRef.current.locationId || "") === String(scopedLocationId || "")
-  ), []);
-
-  const handleMapBuyCancel = useCallback(() => {
-    setBuyModalItem(null);
-  }, []);
-
-  const handleMapBuyNavigate = useCallback((item) => {
-    setBuyModalItem(item);
-  }, []);
-
-  const handleMapBuyConfirm = useCallback(async (quantity) => {
-    if (!activeHousehold?.id || !locationId || !buyModalItem) {
-      setBuyModalItem(null);
-      return;
-    }
-
-    const activeHouseholdId = activeHousehold.id;
-    const scopedLocationId = locationId;
-    const item = buyModalItems.find((candidate) => candidate.id === buyModalItem.id) || buyModalItem;
-
-    try {
-      const currentIndex = buyModalItems.findIndex((candidate) => candidate.id === item.id);
-      const resolvedIndex = currentIndex >= 0 ? currentIndex : 0;
-
-      await markBought(activeHouseholdId, scopedLocationId, item.item_name, quantity, true);
-      if (!isCurrentMapBuyScope(activeHouseholdId, scopedLocationId)) return;
-
-      let nextBuyModalItems = buyModalItems;
-      if (quantity >= item.quantity) {
-        nextBuyModalItems = buyModalItems.filter((candidate) => candidate.id !== item.id);
-        updateMapItems((currentItems) =>
-          currentItems.map((candidate) => (
-            candidate.id === item.id ? getLocallyBoughtMapItem(candidate) : candidate
-          ))
-        );
-      } else {
-        let updatedItem;
-        try {
-          const response = await getItemByName(activeHouseholdId, scopedLocationId, item.item_name);
-          if (!isCurrentMapBuyScope(activeHouseholdId, scopedLocationId)) return;
-          updatedItem = response.data || getLocallyReducedMapItem(item, quantity);
-        } catch {
-          if (!isCurrentMapBuyScope(activeHouseholdId, scopedLocationId)) return;
-          updatedItem = getLocallyReducedMapItem(item, quantity);
-          toast.info("Updated item locally", "Latest quantity will sync when the map reloads.");
-        }
-        nextBuyModalItems = buyModalItems.map((candidate) => (candidate.id === item.id ? updatedItem : candidate));
-
-        updateMapItems((currentItems) =>
-          currentItems.map((candidate) => (candidate.id === item.id ? updatedItem : candidate))
-        );
-      }
-      setBuyModalItem(getNextMapBuyItem(nextBuyModalItems, resolvedIndex, item.id));
-
-      toast.success("Marked item bought", `Marked item ${item.item_name} as bought`);
-    } catch (error) {
-      if (!isCurrentMapBuyScope(activeHouseholdId, scopedLocationId)) return;
-      const message = getApiErrorMessage(error, "Failed to mark item as bought");
-      toast.error("Mark item bought failed", `Mark item bought failed: ${message}`);
-    }
-  }, [activeHousehold?.id, buyModalItem, buyModalItems, isCurrentMapBuyScope, locationId, toast, updateMapItems]);
-
-  const mapSize = useMemo(
-    () => ({
-      width: mapDraft.width || activeMap?.width || DEFAULT_MAP_SIZE.width,
-      height: mapDraft.height || activeMap?.height || DEFAULT_MAP_SIZE.height,
-    }),
-    [activeMap?.height, activeMap?.width, mapDraft.height, mapDraft.width]
-  );
-
-  useEffect(() => {
-    setBuyModalItem(null);
-  }, [activeHousehold?.id, locationId]);
-
   useEffect(() => {
     const matchingLocation = stores.find((store) => String(store.id) === String(locationId));
     if (matchingLocation && String(activeStore?.id) !== String(matchingLocation.id)) {
@@ -512,31 +373,18 @@ export default function LocationMapManager() {
         )}
       </main>
 
-      {buyModalItem ? (
-        <ConfirmBuyModal
-          item={buyModalItem}
-          allItems={buyModalItems}
-          onNavigate={handleMapBuyNavigate}
-          onCancel={handleMapBuyCancel}
-          onConfirm={handleMapBuyConfirm}
-        />
-      ) : null}
-
-      <ConfirmSlideModal
-        isOpen={Boolean(pendingDeleteObject)}
-        title={`Delete ${getMapObjectDisplayLabel(pendingDeleteObject, "this map area")}?`}
-        description="This removes the area from the draft map. Save the draft after deleting to keep the change."
-        confirmLabel="Delete Area"
-        onClose={() => setPendingDeleteObject(null)}
-        onConfirm={handleDeleteObject}
-      />
-      <ConfirmSlideModal
-        isOpen={Boolean(pendingLeaveTarget)}
-        title="Leave with unsaved changes?"
-        description="Your draft edits are only on this screen right now. Save the draft before leaving if you want to keep them."
-        confirmLabel="Leave Map"
-        onClose={clearPendingLeave}
-        onConfirm={confirmPendingLeave}
+      <LocationMapDialogs
+        buyModalItem={buyModalItem}
+        buyModalItems={buyModalItems}
+        onBuyNavigate={handleMapBuyNavigate}
+        onBuyCancel={handleMapBuyCancel}
+        onBuyConfirm={handleMapBuyConfirm}
+        pendingDeleteObject={pendingDeleteObject}
+        onDeleteClose={() => setPendingDeleteObject(null)}
+        onDeleteConfirm={handleDeleteObject}
+        pendingLeaveTarget={pendingLeaveTarget}
+        onLeaveClose={clearPendingLeave}
+        onLeaveConfirm={confirmPendingLeave}
       />
     </div>
   );