diff --git a/frontend/src/pages/AdminPage.tsx b/frontend/src/pages/AdminPage.tsx
index c25c3d622..b1ffe2b87 100644
--- a/frontend/src/pages/AdminPage.tsx
+++ b/frontend/src/pages/AdminPage.tsx
@@ -8,16 +8,16 @@ import useToast from '@/hooks/useToast';
 import { boxShadowSpread, flexRow, title2, title3 } from '@/styles/common';
 
 const AdminPage = () => {
-  const { data: user } = useUserQuery();
+  const { data: user, isFetched } = useUserQuery();
   const { showToast } = useToast();
   const navigate = useNavigate();
 
   useEffect(() => {
-    if (user?.userType !== 'ADMIN') {
+    if (isFetched && user?.userType !== 'ADMIN') {
       showToast({ message: '해당 페이지 접근 권한이 없습니다.', type: 'error' });
       navigate(ROUTE_PATH.root);
     }
-  }, []);
+  }, [isFetched]);
 
   return (
     <S.PageWrapper>
diff --git a/frontend/src/store/roomInfoNonValidatedStore.ts b/frontend/src/store/roomInfoNonValidatedStore.ts
index f07a2f078..7c4eee5fc 100644
--- a/frontend/src/store/roomInfoNonValidatedStore.ts
+++ b/frontend/src/store/roomInfoNonValidatedStore.ts
@@ -1,5 +1,5 @@
 import { createStore } from 'zustand';
-import { persist } from 'zustand/middleware';
+import { createJSONStorage, persist } from 'zustand/middleware';
 
 import { DEFAULT_POSITION } from '@/constants/map';
 import { Position } from '@/types/address';
@@ -33,7 +33,7 @@ const roomInfoNonValidatedStore = createStore<States & { actions: Actions }>()(
     }),
     {
       name: 'roomInfo-nonvalidated',
-      getStorage: () => sessionStorage,
+      storage: createJSONStorage(() => sessionStorage),
       partialize: store => {
         const { actions: _, ...state } = store;
         return { ...state };
diff --git a/frontend/src/store/roomInfoStore.ts b/frontend/src/store/roomInfoStore.ts
index 5584a6903..c09d15c36 100644
--- a/frontend/src/store/roomInfoStore.ts
+++ b/frontend/src/store/roomInfoStore.ts
@@ -1,5 +1,5 @@
 import { createStore } from 'zustand';
-import { persist } from 'zustand/middleware';
+import { createJSONStorage, persist } from 'zustand/middleware';
 
 import { roomFloorLevels, roomOccupancyPeriods } from '@/constants/roomInfo';
 import { parseRoomInfo } from '@/hooks/useRoomInfoValidated';
@@ -99,7 +99,7 @@ export const roomInfoStore = createStore<RoomInfoState & { actions: RoomInfoActi
     }),
     {
       name: 'roomInfo',
-      getStorage: () => sessionStorage,
+      storage: createJSONStorage(() => sessionStorage),
       partialize: state => {
         const { actions: _, ...roomInfo } = state;
         return { ...roomInfo };
diff --git a/frontend/src/store/useChecklistStore.ts b/frontend/src/store/useChecklistStore.ts
index c00d1a35c..416249e0c 100644
--- a/frontend/src/store/useChecklistStore.ts
+++ b/frontend/src/store/useChecklistStore.ts
@@ -1,5 +1,5 @@
 import { create } from 'zustand';
-import { persist } from 'zustand/middleware';
+import { createJSONStorage, persist } from 'zustand/middleware';
 
 import { AnswerType } from '@/types/answer';
 import { Category } from '@/types/category';
@@ -119,7 +119,7 @@ const useChecklistStore = create<ChecklistState>()(
     }),
     {
       name: 'checklist-answer',
-      getStorage: () => sessionStorage,
+      storage: createJSONStorage(() => sessionStorage),
       partialize: ({ checklistCategoryQnA, categories }) => ({
         checklistCategoryQnA,
         categories,
diff --git a/frontend/src/store/useSelectedOptionStore.ts b/frontend/src/store/useSelectedOptionStore.ts
index fd45b735d..8d264809b 100644
--- a/frontend/src/store/useSelectedOptionStore.ts
+++ b/frontend/src/store/useSelectedOptionStore.ts
@@ -1,5 +1,5 @@
 import { create } from 'zustand';
-import { persist } from 'zustand/middleware';
+import { createJSONStorage, persist } from 'zustand/middleware';
 
 import { DEFAULT_OPTIONS, OPTION_COUNT, OPTIONS } from '@/constants/options';
 
@@ -66,7 +66,7 @@ const useSelectedOptionStore = create<OptionState & { actions: OptionAction }>()
     }),
     {
       name: 'checklist-answer-option',
-      getStorage: () => sessionStorage,
+      storage: createJSONStorage(() => sessionStorage),
       partialize: state => ({
         selectedOptions: state.selectedOptions,
         // actions는 저장하지 않음