diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d9a956a6bf5303..c6a03a64e7aa0b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -391,6 +391,14 @@ jobs:
     if: needs.build-context.outputs.run-wasi == 'true'
     uses: ./.github/workflows/reusable-wasi.yml
 
+  build-ubuntu-installed:
+    name: 'Ubuntu (installed)'
+    needs: build-context
+    if: needs.build-context.outputs.run-ubuntu == 'true'
+    uses: ./.github/workflows/reusable-install.yml
+    with:
+      os: ubuntu-24.04-arm
+
   test-hypothesis:
     name: "Hypothesis tests on Ubuntu"
     runs-on: ubuntu-24.04
@@ -670,6 +678,7 @@ jobs:
     - build-ios
     - build-emscripten
     - build-wasi
+    - build-ubuntu-installed
     - test-hypothesis
     - build-asan
     - build-san
@@ -717,6 +726,7 @@ jobs:
             && '
             build-ubuntu,
             build-ubuntu-ssltests,
+            build-ubuntu-installed,
             test-hypothesis,
             build-asan,
             build-san,
diff --git a/.github/workflows/reusable-install.yml b/.github/workflows/reusable-install.yml
new file mode 100644
index 00000000000000..102647414f841b
--- /dev/null
+++ b/.github/workflows/reusable-install.yml
@@ -0,0 +1,51 @@
+name: Reusable Ubuntu (Installed)
+
+on:
+  workflow_call:
+    inputs:
+      os:
+         description: OS to run the job
+         required: true
+         type: string
+
+permissions:
+  contents: read
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  build-install-reusable:
+    name: build, install and test (${{ inputs.os }})
+    runs-on: ${{ inputs.os }}
+    timeout-minutes: 60
+    env:
+      PYTHONSTRICTEXTENSIONBUILD: 1
+    steps:
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
+    - name: Runner image version
+      run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
+    - name: Register gcc problem matcher
+      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
+    - name: Set install dir
+      run:
+        echo "INSTALL_DIR=$(realpath "${GITHUB_WORKSPACE}/../installed-python")" >> "$GITHUB_ENV"
+    - name: Install dependencies
+      run: sudo ./.github/workflows/posix-deps-apt.sh
+    - name: Configure CPython
+      run: ./configure --config-cache --with-pydebug --prefix="$INSTALL_DIR"
+    - name: Build CPython
+      run: make -j
+    - name: Install CPython
+      run: make install
+    - name: Set installed interpreter
+      run: |
+        ldversion=$(./python -c 'import sysconfig; print(sysconfig.get_config_var("LDVERSION"))')
+        echo "INSTALLED_PYTHON=${INSTALL_DIR}/bin/python${ldversion}" >> "$GITHUB_ENV"
+    - name: Display build info
+      run: |
+        "$INSTALLED_PYTHON" -m test.pythoninfo
+    - name: Test the installed Python
+      run: xvfb-run "$INSTALLED_PYTHON" -m test -j0 --fast-ci --timeout=900