diff --git a/backend/prisma/seed.js b/backend/prisma/seed.js
new file mode 100644
index 0000000..243bc51
--- /dev/null
+++ b/backend/prisma/seed.js
@@ -0,0 +1,67 @@
+const { PrismaClient } = require('@prisma/client');
+
+const prisma = new PrismaClient();
+
+const Role = {
+    OWNER: 'OWNER',
+    MANAGER: 'MANAGER',
+    GROWER: 'GROWER',
+    STAFF: 'STAFF'
+};
+
+const RoomType = {
+    VEG: 'VEG',
+    FLOWER: 'FLOWER',
+    DRY: 'DRY',
+    CURE: 'CURE',
+    MOTHER: 'MOTHER',
+    CLONE: 'CLONE'
+};
+
+async function main() {
+    console.log('Seeding database...');
+
+    // Create Owner
+    const ownerEmail = 'admin@runfoo.com';
+    const existingOwner = await prisma.user.findUnique({ where: { email: ownerEmail } });
+
+    if (!existingOwner) {
+        await prisma.user.create({
+            data: {
+                email: ownerEmail,
+                passwordHash: 'password123', // In real app, hash this
+                name: 'Facility Owner',
+                role: Role.OWNER,
+                rate: 50.00
+            }
+        });
+        console.log('Created Owner: admin@runfoo.com / password123');
+    }
+
+    // Create Default Rooms
+    const rooms = [
+        { name: 'Veg Room 1', type: RoomType.VEG, sqft: 1200 },
+        { name: 'Flower Room A', type: RoomType.FLOWER, sqft: 2500 },
+        { name: 'Flower Room B', type: RoomType.FLOWER, sqft: 2500 },
+        { name: 'Dry Room', type: RoomType.DRY, sqft: 800 },
+    ];
+
+    for (const r of rooms) {
+        const existing = await prisma.room.findFirst({ where: { name: r.name } });
+        if (!existing) {
+            await prisma.room.create({ data: r });
+            console.log(`Created Room: ${r.name}`);
+        }
+    }
+
+    console.log('Seeding complete.');
+}
+
+main()
+    .catch((e) => {
+        console.error(e);
+        process.exit(1);
+    })
+    .finally(async () => {
+        await prisma.$disconnect();
+    });