diff --git a/apps/backend/src/auth/jwt.strategy.ts b/apps/backend/src/auth/jwt.strategy.ts
index 906773f4..b7670f13 100644
--- a/apps/backend/src/auth/jwt.strategy.ts
+++ b/apps/backend/src/auth/jwt.strategy.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, NotFoundException } from '@nestjs/common';
 import { PassportStrategy } from '@nestjs/passport';
 import { passportJwtSecret } from 'jwks-rsa';
 import { ExtractJwt, Strategy } from 'passport-jwt';
@@ -31,6 +31,12 @@ export class JwtStrategy extends PassportStrategy(Strategy) {
   // we use the sub field in the payload to find the user in our database
   async validate(payload: CognitoJwtPayload): Promise<User> {
     const dbUser = await this.usersService.findUserByCognitoId(payload.sub);
+    // If an exception is thrown, throw something here
+    if (!dbUser) {
+      throw new NotFoundException(
+        `User with payload sub ${payload.sub} not found`,
+      );
+    }
     return dbUser;
   }
 }
diff --git a/apps/backend/src/auth/ownership.decorator.ts b/apps/backend/src/auth/ownership.decorator.ts
new file mode 100644
index 00000000..87101845
--- /dev/null
+++ b/apps/backend/src/auth/ownership.decorator.ts
@@ -0,0 +1,25 @@
+import { SetMetadata, Type } from '@nestjs/common';
+
+// Resolver function type to get the owner user ID for a given entity ID
+export type OwnerIdResolver = (params: {
+  entityId: number;
+  services: ServiceRegistry;
+}) => Promise<number | null>;
+
+// Registry of services that can be easily resolved
+// Eliminates the issues with circular dependencies
+// allowing the lambdas to resolve only the services they need
+export interface ServiceRegistry {
+  get<T>(serviceClass: Type<T>): T;
+}
+
+// Configuration for ownership check
+export interface OwnershipConfig {
+  idParam: string;
+  resolver: OwnerIdResolver;
+}
+
+export const OWNERSHIP_CHECK_KEY = 'ownership_check';
+
+export const CheckOwnership = (config: OwnershipConfig) =>
+  SetMetadata(OWNERSHIP_CHECK_KEY, config);
diff --git a/apps/backend/src/auth/ownership.guard.ts b/apps/backend/src/auth/ownership.guard.ts
new file mode 100644
index 00000000..0b21e154
--- /dev/null
+++ b/apps/backend/src/auth/ownership.guard.ts
@@ -0,0 +1,98 @@
+import {
+  Injectable,
+  CanActivate,
+  ExecutionContext,
+  ForbiddenException,
+  NotFoundException,
+  Type,
+} from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import { ModuleRef } from '@nestjs/core';
+import {
+  OWNERSHIP_CHECK_KEY,
+  OwnershipConfig,
+  ServiceRegistry,
+} from './ownership.decorator';
+
+@Injectable()
+export class OwnershipGuard implements CanActivate {
+  constructor(private reflector: Reflector, private moduleRef: ModuleRef) {}
+
+  async canActivate(context: ExecutionContext): Promise<boolean> {
+    const config = this.reflector.get<OwnershipConfig>(
+      OWNERSHIP_CHECK_KEY,
+      context.getHandler(),
+    );
+
+    if (!config) {
+      return true;
+    }
+
+    // Process all request information and the logged in user
+    const req = context.switchToHttp().getRequest();
+    const user = req.user;
+
+    // Admins bypass ownership checks
+    if (user.role === 'ADMIN') {
+      return true;
+    }
+
+    if (!user) {
+      throw new ForbiddenException('Not authenticated');
+    }
+
+    // Get the id from the parameters
+    const entityId = Number(req.params[config.idParam]);
+
+    if (isNaN(entityId)) {
+      throw new ForbiddenException(`Invalid ${config.idParam}`);
+    }
+
+    // Create a service registry that easily resolves services
+    const services = this.createServiceRegistry();
+
+    try {
+      // Execute the lambda function to get the owner user ID
+      const ownerId = await config.resolver({
+        entityId,
+        services,
+      });
+
+      if (ownerId === null || ownerId === undefined) {
+        throw new ForbiddenException('Unable to determine resource ownership');
+      }
+
+      if (ownerId !== user.id) {
+        throw new ForbiddenException('Access denied');
+      }
+
+      return true;
+    } catch (error) {
+      throw new ForbiddenException('Error verifying resource ownership');
+    }
+  }
+
+  // Use a service registry for easy service resolution and caching
+  private createServiceRegistry(): ServiceRegistry {
+    const cache = new Map<Type<unknown>, unknown>();
+    const moduleRef = this.moduleRef;
+
+    return {
+      get<T>(serviceClass: Type<T>): T {
+        // Return cached service if already resolved before
+        if (cache.has(serviceClass)) {
+          return cache.get(serviceClass) as T;
+        }
+
+        // Resolve and cache the service
+        try {
+          const service = moduleRef.get(serviceClass, { strict: false });
+          cache.set(serviceClass, service);
+          return service;
+        } catch (error) {
+          throw new Error(`Could not resolve service: ${serviceClass.name}`);
+        }
+      },
+    };
+  }
+}
diff --git a/apps/backend/src/auth/sharedAuth.module.ts b/apps/backend/src/auth/sharedAuth.module.ts
new file mode 100644
index 00000000..757fb974
--- /dev/null
+++ b/apps/backend/src/auth/sharedAuth.module.ts
@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { OwnershipGuard } from './ownership.guard';
+
+@Module({
+  providers: [OwnershipGuard],
+  exports: [OwnershipGuard],
+})
+export class SharedAuthModule {}
diff --git a/apps/backend/src/donationItems/donationItems.controller.ts b/apps/backend/src/donationItems/donationItems.controller.ts
index 6435dd9c..075fb145 100644
--- a/apps/backend/src/donationItems/donationItems.controller.ts
+++ b/apps/backend/src/donationItems/donationItems.controller.ts
@@ -5,17 +5,18 @@ import {
   Param,
   Get,
   Patch,
+  UseGuards,
   ParseIntPipe,
-  BadRequestException,
 } from '@nestjs/common';
 import { ApiBody } from '@nestjs/swagger';
 import { DonationItemsService } from './donationItems.service';
 import { DonationItem } from './donationItems.entity';
+import { AuthGuard } from '@nestjs/passport';
 import { FoodType } from './types';
 import { CreateMultipleDonationItemsDto } from './dtos/create-donation-items.dto';
 
 @Controller('donation-items')
-//@UseInterceptors()
+@UseGuards(AuthGuard('jwt'))
 export class DonationItemsController {
   constructor(private donationItemsService: DonationItemsService) {}
 
diff --git a/apps/backend/src/donationItems/donationItems.service.ts b/apps/backend/src/donationItems/donationItems.service.ts
index 740a2650..ef9f112d 100644
--- a/apps/backend/src/donationItems/donationItems.service.ts
+++ b/apps/backend/src/donationItems/donationItems.service.ts
@@ -13,6 +13,16 @@ export class DonationItemsService {
     @InjectRepository(Donation) private donationRepo: Repository<Donation>,
   ) {}
 
+  async findOne(itemId: number): Promise<DonationItem> {
+    validateId(itemId, 'Donation Item');
+
+    const donationItem = await this.repo.findOneBy({ itemId });
+    if (!donationItem) {
+      throw new NotFoundException(`Donation item ${itemId} not found`);
+    }
+    return donationItem;
+  }
+
   async getAllDonationItems(donationId: number): Promise<DonationItem[]> {
     validateId(donationId, 'Donation');
     return this.repo.find({ where: { donation: { donationId } } });
diff --git a/apps/backend/src/foodRequests/request.module.ts b/apps/backend/src/foodRequests/request.module.ts
index 0e5dc280..d1c19680 100644
--- a/apps/backend/src/foodRequests/request.module.ts
+++ b/apps/backend/src/foodRequests/request.module.ts
@@ -9,6 +9,7 @@ import { AuthModule } from '../auth/auth.module';
 import { OrdersService } from '../orders/order.service';
 import { Order } from '../orders/order.entity';
 import { Pantry } from '../pantries/pantries.entity';
+import { SharedAuthModule } from '../auth/sharedAuth.module';
 
 @Module({
   imports: [
@@ -16,6 +17,7 @@ import { Pantry } from '../pantries/pantries.entity';
     MulterModule.register({ dest: './uploads' }),
     TypeOrmModule.forFeature([FoodRequest, Order, Pantry]),
     AuthModule,
+    SharedAuthModule,
   ],
   controllers: [RequestsController],
   providers: [RequestsService, OrdersService],
diff --git a/apps/backend/src/orders/order.controller.ts b/apps/backend/src/orders/order.controller.ts
index a3ec003a..78cb2eb5 100644
--- a/apps/backend/src/orders/order.controller.ts
+++ b/apps/backend/src/orders/order.controller.ts
@@ -7,6 +7,7 @@ import {
   Body,
   Query,
   BadRequestException,
+  UseGuards,
   ValidationPipe,
 } from '@nestjs/common';
 import { OrdersService } from './order.service';
@@ -16,6 +17,10 @@ import { FoodManufacturer } from '../foodManufacturers/manufacturers.entity';
 import { FoodRequest } from '../foodRequests/request.entity';
 import { AllocationsService } from '../allocations/allocations.service';
 import { OrderStatus } from './types';
+import { AuthGuard } from '@nestjs/passport';
+import { OwnershipGuard } from '../auth/ownership.guard';
+import { CheckOwnership } from '../auth/ownership.decorator';
+import { PantriesService } from '../pantries/pantries.service';
 import { TrackingCostDto } from './dtos/tracking-cost.dto';
 
 @Controller('orders')
@@ -56,6 +61,29 @@ export class OrdersController {
     return this.ordersService.findOrderPantry(orderId);
   }
 
+  // Test endpoint for right now
+  @UseGuards(AuthGuard('jwt'), OwnershipGuard)
+  @CheckOwnership({
+    idParam: 'orderId',
+    resolver: async ({ entityId, services }) => {
+      const request = await services
+        .get(OrdersService)
+        .findOrderFoodRequest(entityId);
+
+      if (!request) {
+        return null;
+      }
+
+      const pantry = await services
+        .get(PantriesService)
+        .findOne(request.pantryId);
+
+      if (!pantry) {
+        return null;
+      }
+      return pantry?.pantryUser?.id ?? null;
+    },
+  })
   @Get('/:orderId/request')
   async getRequestFromOrder(
     @Param('orderId', ParseIntPipe) orderId: number,
diff --git a/apps/backend/src/orders/order.module.ts b/apps/backend/src/orders/order.module.ts
index 0734f876..1f435f43 100644
--- a/apps/backend/src/orders/order.module.ts
+++ b/apps/backend/src/orders/order.module.ts
@@ -3,8 +3,6 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { OrdersController } from './order.controller';
 import { Order } from './order.entity';
 import { OrdersService } from './order.service';
-import { JwtStrategy } from '../auth/jwt.strategy';
-import { AuthService } from '../auth/auth.service';
 import { Pantry } from '../pantries/pantries.entity';
 import { AllocationModule } from '../allocations/allocations.module';
 import { AuthModule } from '../auth/auth.module';
diff --git a/apps/backend/src/pantries/pantries.controller.ts b/apps/backend/src/pantries/pantries.controller.ts
index 8ed72be2..a47bdd6a 100644
--- a/apps/backend/src/pantries/pantries.controller.ts
+++ b/apps/backend/src/pantries/pantries.controller.ts
@@ -6,6 +6,7 @@ import {
   ParseIntPipe,
   Patch,
   Post,
+  UseGuards,
   Req,
   UnauthorizedException,
 } from '@nestjs/common';
@@ -13,6 +14,7 @@ import { Pantry } from './pantries.entity';
 import { PantriesService } from './pantries.service';
 import { Role } from '../users/types';
 import { Roles } from '../auth/roles.decorator';
+import { AuthGuard } from '@nestjs/passport';
 import { ValidationPipe } from '@nestjs/common';
 import { PantryApplicationDto } from './dtos/pantry-application.dto';
 import { ApiBody } from '@nestjs/swagger';
@@ -26,6 +28,8 @@ import {
 } from './types';
 import { Order } from '../orders/order.entity';
 import { OrdersService } from '../orders/order.service';
+import { OwnershipGuard } from '../auth/ownership.guard';
+import { CheckOwnership } from '../auth/ownership.decorator';
 import { Public } from '../auth/public.decorator';
 
 @Controller('pantries')
@@ -53,6 +57,14 @@ export class PantriesController {
     return this.pantriesService.getPendingPantries();
   }
 
+  @UseGuards(AuthGuard('jwt'), OwnershipGuard)
+  @CheckOwnership({
+    idParam: 'pantryId',
+    resolver: async ({ entityId, services }) => {
+      const pantry = await services.get(PantriesService).findOne(entityId);
+      return pantry?.pantryUser?.id ?? null;
+    },
+  })
   @Roles(Role.PANTRY, Role.ADMIN)
   @Get('/:pantryId')
   async getPantry(
diff --git a/apps/backend/src/pantries/pantries.module.ts b/apps/backend/src/pantries/pantries.module.ts
index 5e60b78d..a60ffbf7 100644
--- a/apps/backend/src/pantries/pantries.module.ts
+++ b/apps/backend/src/pantries/pantries.module.ts
@@ -6,12 +6,14 @@ import { Pantry } from './pantries.entity';
 import { AuthModule } from '../auth/auth.module';
 import { OrdersModule } from '../orders/order.module';
 import { User } from '../users/user.entity';
+import { SharedAuthModule } from '../auth/sharedAuth.module';
 
 @Module({
   imports: [
     TypeOrmModule.forFeature([Pantry, User]),
     OrdersModule,
     forwardRef(() => AuthModule),
+    SharedAuthModule,
   ],
   controllers: [PantriesController],
   providers: [PantriesService],
diff --git a/apps/frontend/src/api/apiClient.ts b/apps/frontend/src/api/apiClient.ts
index 0378afb9..58f2ba59 100644
--- a/apps/frontend/src/api/apiClient.ts
+++ b/apps/frontend/src/api/apiClient.ts
@@ -4,6 +4,7 @@ import axios, {
   type AxiosInstance,
   type InternalAxiosRequestConfig,
 } from 'axios';
+import { NavigateFunction } from 'react-router-dom';
 import {
   User,
   Order,
@@ -27,6 +28,7 @@ const defaultBaseUrl =
 export class ApiClient {
   private axiosInstance: AxiosInstance;
   private accessToken: string | undefined;
+  private navigate: NavigateFunction | null = null;
 
   constructor() {
     this.axiosInstance = axios.create({ baseURL: defaultBaseUrl });
@@ -48,15 +50,24 @@ export class ApiClient {
     this.axiosInstance.interceptors.response.use(
       (response) => response,
       (error: AxiosError) => {
-        if (error.response?.status === 403) {
-          // TODO: For a future ticket, figure out a better method than renavigation on failure (or a better place to check than in the api requests)
-          window.location.replace('/unauthorized');
+        if (error.response?.status === 403 && this.navigate) {
+          const errorData = error.response?.data as { message?: string };
+          this.navigate('/unauthorized', {
+            replace: true,
+            state: {
+              errorMessage: errorData?.message || 'Access forbidden',
+            },
+          });
         }
         return Promise.reject(error);
       },
     );
   }
 
+  public setNavigate(navigate: NavigateFunction) {
+    this.navigate = navigate;
+  }
+
   public setAccessToken(token: string | undefined) {
     this.accessToken = token;
   }
diff --git a/apps/frontend/src/components/forms/deliveryConfirmationModal.tsx b/apps/frontend/src/components/forms/deliveryConfirmationModal.tsx
index 03a6a66e..299e6fcb 100644
--- a/apps/frontend/src/components/forms/deliveryConfirmationModal.tsx
+++ b/apps/frontend/src/components/forms/deliveryConfirmationModal.tsx
@@ -8,7 +8,12 @@ import {
   Text,
   Dialog,
 } from '@chakra-ui/react';
-import { Form, ActionFunction, ActionFunctionArgs } from 'react-router-dom';
+import {
+  Form,
+  ActionFunction,
+  ActionFunctionArgs,
+  redirect,
+} from 'react-router-dom';
 import ApiClient from '@api/apiClient';
 
 interface DeliveryConfirmationModalProps {
@@ -151,7 +156,7 @@ export const submitDeliveryConfirmationFormModal: ActionFunction = async ({
   const form = await request.formData();
   const confirmDeliveryData = new FormData();
 
-  const pantryId = form.get('pantryId');
+  const pantryId = form.get('pantryId') as string;
   const requestId = form.get('requestId') as string;
   confirmDeliveryData.append('requestId', requestId);
 
@@ -161,6 +166,7 @@ export const submitDeliveryConfirmationFormModal: ActionFunction = async ({
     confirmDeliveryData.append('dateReceived', formattedDate);
   } else {
     alert('Delivery date is missing or invalid.');
+    return redirect(`/request-form/${pantryId}`);
   }
 
   confirmDeliveryData.append('feedback', form.get('feedback') as string);
diff --git a/apps/frontend/src/containers/root.tsx b/apps/frontend/src/containers/root.tsx
index d179353f..b6963d35 100644
--- a/apps/frontend/src/containers/root.tsx
+++ b/apps/frontend/src/containers/root.tsx
@@ -1,10 +1,18 @@
-import { Outlet } from 'react-router-dom';
+import { Outlet, useNavigate } from 'react-router-dom';
+import { useEffect } from 'react';
 import Header from '../components/Header';
 import { useAuth } from '../hooks/useAuth';
+import apiClient from '@api/apiClient';
 
 const Root: React.FC = () => {
+  const navigate = useNavigate();
+
   useAuth();
 
+  useEffect(() => {
+    apiClient.setNavigate(navigate);
+  }, [navigate]);
+
   return (
     <div>
       <Header />