diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 023c41de..89d59e66 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -178,6 +178,49 @@ jobs:
           path: dist/
           retention-days: 1
 
+  load-test:
+    name: Load Testing
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install k6
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gnupg2 software-properties-common
+          sudo wget -q -O - https://dl.k6.io/key.gpg | sudo apt-key add -
+          echo "deb https://dl.k6.io/deb stable main" | sudo tee /etc/apt/sources.list.d/k6.list
+          sudo apt-get update
+          sudo apt-get install -y k6
+
+      - name: Start API in background
+        run: |
+          npm run start &
+          sleep 10
+
+      - name: Run load tests
+        run: npm run loadtest:ci
+        env:
+          API_URL: http://localhost:3000
+          NODE_ENV: test
+
+      - name: Upload k6 results
+        uses: actions/upload-artifact@v4
+        with:
+          name: k6-results
+          path: artifacts/k6-results.json
+
   deploy-staging:
     name: Deploy to Staging
     needs: [build, test-integration, test-e2e, test-security]
diff --git a/docs/LOAD_TESTING.md b/docs/LOAD_TESTING.md
new file mode 100644
index 00000000..4e404f5e
--- /dev/null
+++ b/docs/LOAD_TESTING.md
@@ -0,0 +1,44 @@
+# Load Testing Guide
+
+This repository now includes a dedicated load testing suite to satisfy #140.
+
+## Tools
+- k6 (https://k6.io)
+
+## Location
+- `loadtests/propchain-loadtest.js`
+
+## Running locally
+1. Install dependencies:
+   ```bash
+   npm ci
+   npm install --save-dev k6
+   ```
+2. Set env vars:
+   ```bash
+   export API_URL=http://localhost:3000
+   export TEST_USER_EMAIL=loadtest@propchain.local
+   export TEST_USER_PASSWORD=Password123!
+   ```
+3. Start the backend in a separate terminal:
+   ```bash
+   npm run start
+   ```
+4. Run load test:
+   ```bash
+   npm run loadtest
+   ```
+
+## CI integration
+- Workflow: `.github/workflows/ci.yml`
+- Job: `load-test`
+- Command: `npm run loadtest:ci`
+- Results are saved as artifact `k6-results` in JSON format.
+
+## Performance criteria
+- http_req_failed: < 1%
+- 95th percentile response time: < 600ms
+
+## To add scenarios
+- Edit `loadtests/propchain-loadtest.js` with more groups/endpoints.
+- Add custom thresholds for endpoint-level behavior.
diff --git a/loadtests/propchain-loadtest.js b/loadtests/propchain-loadtest.js
new file mode 100644
index 00000000..67b6c3a9
--- /dev/null
+++ b/loadtests/propchain-loadtest.js
@@ -0,0 +1,62 @@
+import http from 'k6/http';
+import { check, group, sleep } from 'k6';
+
+export const options = {
+  vus: Number(__ENV.LOAD_VUS || 40),
+  duration: __ENV.LOAD_DURATION || '3m',
+  thresholds: {
+    http_req_failed: ['rate<0.01'],
+    http_req_duration: ['p(95)<600'],
+  },
+};
+
+const API_URL = __ENV.API_URL || 'http://localhost:3000';
+const TEST_EMAIL = __ENV.TEST_USER_EMAIL || 'loadtest@propchain.local';
+const TEST_PASSWORD = __ENV.TEST_USER_PASSWORD || 'Password123!';
+
+function login() {
+  const payload = JSON.stringify({
+    email: TEST_EMAIL,
+    password: TEST_PASSWORD,
+  });
+
+  const headers = {
+    'Content-Type': 'application/json',
+  };
+
+  const res = http.post(`${API_URL}/auth/login`, payload, { headers });
+
+  check(res, {
+    'login status is 200': (r) => r.status === 200,
+    'login returns access token': (r) => r.json('accessToken') !== undefined,
+  });
+
+  return res.json('accessToken');
+}
+
+export default () => {
+  group('Auth + Basic API traffic', () => {
+    const token = login();
+    const authHeaders = {
+      Authorization: `Bearer ${token}`,
+      'Content-Type': 'application/json',
+    };
+
+    const props = http.get(`${API_URL}/properties`, { headers: authHeaders });
+    check(props, {
+      'properties status is 200': (r) => r.status === 200,
+    });
+
+    const docs = http.get(`${API_URL}/documents`, { headers: authHeaders });
+    check(docs, {
+      'documents status is 200': (r) => r.status === 200,
+    });
+
+    const health = http.get(`${API_URL}/health`);
+    check(health, {
+      'health status is 200': (r) => r.status === 200,
+    });
+
+    sleep(1);
+  });
+};
diff --git a/package.json b/package.json
index 5881b995..7eab6740 100644
--- a/package.json
+++ b/package.json
@@ -52,6 +52,8 @@
     "db:backup": "bash scripts/backup.sh",
     "db:restore": "bash scripts/restore.sh",
     "db:benchmark": "ts-node test/database/performance.benchmark.ts",
+    "loadtest": "npx k6 run loadtests/propchain-loadtest.js",
+    "loadtest:ci": "npx k6 run --out json=artifacts/k6-results.json loadtests/propchain-loadtest.js",
     "docs:generate": "typedoc --skipErrorChecking"
   },
   "dependencies": {