diff --git a/backend/controllers/shop/sub-controllers/warehouseController.js b/backend/controllers/shop/sub-controllers/warehouseController.js
new file mode 100644
index 00000000..2e8dbfe4
--- /dev/null
+++ b/backend/controllers/shop/sub-controllers/warehouseController.js
@@ -0,0 +1,330 @@
+const Warehouse = require("../../../model/shop/sub-model/Warehouse");
+const InventoryItem = require("../../../model/shop/sub-model/InventoryModel");
+
+// 1. Create Warehouse Logic
+exports.createWarehouse = async (req, res) => {
+  try {
+    const {
+      warehouseId,
+      warehouseName,
+      address,
+      capacity,
+      currentOccupancy,
+      inventoryItems,
+      contactInfo,
+    } = req.body;
+
+    // Validate unique Warehouse Name and Warehouse ID
+    const existingWarehouse = await Warehouse.findOne({
+      $or: [{ warehouseId }, { warehouseName }],
+    });
+    if (existingWarehouse) {
+      return res
+        .status(400)
+        .json({ message: "Warehouse ID or Name must be unique" });
+    }
+
+    // Create new warehouse
+    const warehouse = new Warehouse({
+      warehouseId,
+      warehouseName,
+      address,
+      capacity,
+      currentOccupancy,
+      inventoryItems,
+      contactInfo,
+      lastUpdated: new Date(),
+    });
+
+    await warehouse.save();
+
+    return res
+      .status(201)
+      .json({ message: "Warehouse created successfully", warehouse });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 2. Update Warehouse Logic
+exports.updateWarehouse = async (req, res) => {
+  try {
+    const { warehouseId } = req.params;
+    const {
+      warehouseName,
+      address,
+      capacity,
+      currentOccupancy,
+      inventoryItems,
+      contactInfo,
+    } = req.body;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    // Update warehouse data
+    warehouse.warehouseName = warehouseName || warehouse.warehouseName;
+    warehouse.address = address || warehouse.address;
+    warehouse.capacity = capacity || warehouse.capacity;
+    warehouse.currentOccupancy = currentOccupancy || warehouse.currentOccupancy;
+    warehouse.inventoryItems = inventoryItems || warehouse.inventoryItems;
+    warehouse.contactInfo = contactInfo || warehouse.contactInfo;
+    warehouse.lastUpdated = new Date();
+
+    await warehouse.save();
+
+    return res
+      .status(200)
+      .json({ message: "Warehouse updated successfully", warehouse });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 3. Get Warehouse Inventory
+exports.getWarehouseInventory = async (req, res) => {
+  try {
+    const { warehouseId } = req.params;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    return res.status(200).json({ inventoryItems: warehouse.inventoryItems });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 4. Check Warehouse Capacity
+exports.checkWarehouseCapacity = async (req, res) => {
+  try {
+    const { warehouseId } = req.params;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    if (warehouse.currentOccupancy > warehouse.capacity) {
+      return res.status(400).json({
+        message: "Current Occupancy exceeds Warehouse Capacity",
+        status: "Over Capacity",
+        currentOccupancy: warehouse.currentOccupancy,
+        capacity: warehouse.capacity,
+      });
+    }
+
+    return res.status(200).json({
+      message: "Warehouse is within capacity",
+      status: "Within Capacity",
+      currentOccupancy: warehouse.currentOccupancy,
+      capacity: warehouse.capacity,
+    });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 5. Delete Warehouse Logic
+exports.deleteWarehouse = async (req, res) => {
+  try {
+    const { warehouseId } = req.params;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    await warehouse.remove();
+
+    return res.status(200).json({ message: "Warehouse deleted successfully" });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 6. Get All Warehouses
+exports.getAllWarehouses = async (req, res) => {
+  try {
+    const warehouses = await Warehouse.find();
+    return res.status(200).json(warehouses);
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 7. Search Warehouse by Name or ID
+exports.searchWarehouse = async (req, res) => {
+  try {
+    const { query } = req.params;
+    const warehouses = await Warehouse.find({
+      $or: [
+        { warehouseId: { $regex: query, $options: "i" } },
+        { warehouseName: { $regex: query, $options: "i" } },
+      ],
+    });
+
+    if (warehouses.length === 0) {
+      return res.status(404).json({ message: "No matching warehouses found" });
+    }
+
+    return res.status(200).json(warehouses);
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 8. Add New Inventory Item
+exports.addInventoryItem = async (req, res) => {
+  try {
+    const { warehouseId } = req.params;
+    const { itemName, quantity, price } = req.body;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    // Create new inventory item
+    const inventoryItem = new InventoryItem({
+      itemName,
+      quantity,
+      price,
+      warehouseId,
+    });
+
+    await inventoryItem.save();
+
+    // Add the inventory item to the warehouse
+    warehouse.inventoryItems.push(inventoryItem);
+    await warehouse.save();
+
+    return res
+      .status(201)
+      .json({ message: "Inventory item added successfully", inventoryItem });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 9. Update Inventory Item
+exports.updateInventoryItem = async (req, res) => {
+  try {
+    const { warehouseId, itemId } = req.params;
+    const { quantity, price } = req.body;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    const inventoryItem = await InventoryItem.findOne({
+      _id: itemId,
+      warehouseId,
+    });
+    if (!inventoryItem) {
+      return res.status(404).json({ message: "Inventory item not found" });
+    }
+
+    inventoryItem.quantity = quantity || inventoryItem.quantity;
+    inventoryItem.price = price || inventoryItem.price;
+
+    await inventoryItem.save();
+
+    return res
+      .status(200)
+      .json({ message: "Inventory item updated successfully", inventoryItem });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 10. Get Inventory Item by ID
+exports.getInventoryItemById = async (req, res) => {
+  try {
+    const { warehouseId, itemId } = req.params;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    const inventoryItem = await InventoryItem.findOne({
+      _id: itemId,
+      warehouseId,
+    });
+    if (!inventoryItem) {
+      return res.status(404).json({ message: "Inventory item not found" });
+    }
+
+    return res.status(200).json({ inventoryItem });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 11. Delete Inventory Item
+exports.deleteInventoryItem = async (req, res) => {
+  try {
+    const { warehouseId, itemId } = req.params;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    const inventoryItem = await InventoryItem.findOne({
+      _id: itemId,
+      warehouseId,
+    });
+    if (!inventoryItem) {
+      return res.status(404).json({ message: "Inventory item not found" });
+    }
+
+    // Remove item from the warehouse
+    warehouse.inventoryItems = warehouse.inventoryItems.filter(
+      (item) => item._id.toString() !== itemId
+    );
+    await warehouse.save();
+
+    // Delete the inventory item
+    await inventoryItem.remove();
+
+    return res
+      .status(200)
+      .json({ message: "Inventory item deleted successfully" });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
+
+// 12. Check Stock Level of Item
+exports.checkStockLevel = async (req, res) => {
+  try {
+    const { warehouseId, itemId } = req.params;
+
+    const warehouse = await Warehouse.findOne({ warehouseId });
+    if (!warehouse) {
+      return res.status(404).json({ message: "Warehouse not found" });
+    }
+
+    const inventoryItem = await InventoryItem.findOne({
+      _id: itemId,
+      warehouseId,
+    });
+    if (!inventoryItem) {
+      return res.status(404).json({ message: "Inventory item not found" });
+    }
+
+    return res.status(200).json({
+      message: "Inventory item stock level",
+      stockLevel: inventoryItem.quantity,
+    });
+  } catch (error) {
+    return res.status(500).json({ message: "Server error", error });
+  }
+};
diff --git a/backend/middleware/sub-ware/warehouseMiddleware.js b/backend/middleware/sub-ware/warehouseMiddleware.js
new file mode 100644
index 00000000..6d79ded9
--- /dev/null
+++ b/backend/middleware/sub-ware/warehouseMiddleware.js
@@ -0,0 +1,67 @@
+const Warehouse = require("../models/Warehouse");
+
+// Middleware to check if warehouse exists by ID
+const checkWarehouseExists = async (req, res, next) => {
+  const { warehouseId } = req.params;
+  const warehouse = await Warehouse.findOne({ warehouseId });
+  if (!warehouse) {
+    return res.status(404).json({ message: "Warehouse not found" });
+  }
+  req.warehouse = warehouse;
+  next();
+};
+
+// Middleware to validate warehouse fields during updates
+const validateWarehouseFields = (req, res, next) => {
+  const { capacity, currentOccupancy, address } = req.body;
+
+  // Validate capacity
+  if (capacity <= 0) {
+    return res
+      .status(400)
+      .json({ message: "Capacity must be a positive number" });
+  }
+
+  // Validate that currentOccupancy does not exceed capacity
+  if (currentOccupancy > capacity) {
+    return res
+      .status(400)
+      .json({ message: "Current Occupancy cannot exceed Warehouse Capacity" });
+  }
+
+  // Validate address fields
+  if (
+    !address ||
+    !address.street ||
+    !address.city ||
+    !address.state ||
+    !address.zip ||
+    !address.country
+  ) {
+    return res.status(400).json({ message: "Address fields must be complete" });
+  }
+
+  next();
+};
+
+// Middleware to validate unique warehouse ID or name
+const validateUniqueWarehouse = async (req, res, next) => {
+  const { warehouseId, warehouseName } = req.body;
+
+  const existingWarehouse = await Warehouse.findOne({
+    $or: [{ warehouseId }, { warehouseName }],
+  });
+  if (existingWarehouse) {
+    return res
+      .status(400)
+      .json({ message: "Warehouse ID or Name must be unique" });
+  }
+
+  next();
+};
+
+module.exports = {
+  checkWarehouseExists,
+  validateWarehouseFields,
+  validateUniqueWarehouse,
+};
diff --git a/backend/model/shop/sub-model/Warehouse.js b/backend/model/shop/sub-model/Warehouse.js
new file mode 100644
index 00000000..e691f85a
--- /dev/null
+++ b/backend/model/shop/sub-model/Warehouse.js
@@ -0,0 +1,63 @@
+const mongoose = require("mongoose");
+
+const warehouseSchema = new mongoose.Schema({
+  warehouseId: {
+     type: String,
+      unique: true,
+       required: true
+     },
+  warehouseName: {
+     type: String,
+      unique: true,
+       required: true },
+  address: {
+    street: { 
+        type: String,
+         required: true
+         },
+    city: {
+         type: String
+         , required: true 
+        },
+    state: {
+         type: String, 
+         required: true
+         },
+    zip: {
+         type: String, 
+         required: true
+         },
+    country: { 
+        type: String, 
+        required: true 
+    },
+  },
+  capacity: {
+     type: Number,
+      required: true
+     },
+  currentOccupancy: {
+     type: Number,
+      default: 0 
+    },
+  inventoryItems: [
+    { 
+    type: mongoose.Schema.Types.ObjectId,
+    ref: "InventoryItem" 
+},
+  ],
+  contactInfo: {
+    phone: { 
+        type: String 
+    },
+    email: { 
+        type: String
+     },
+  },
+  lastUpdated: {
+     type: Date,
+      default: Date.now
+     },
+});
+
+module.exports = mongoose.model("Warehouse", warehouseSchema);