diff --git a/Documentation/build-docc.sh b/Documentation/build-docc.sh
new file mode 100644
index 0000000..def6a16
--- /dev/null
+++ b/Documentation/build-docc.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+cd "$ROOT_DIR"
+
+xcodebuild docbuild \
+  -workspace .swiftpm/xcode/package.xcworkspace \
+  -scheme LocalData \
+  -destination 'generic/platform=iOS'
diff --git a/README.md b/README.md
index 3de2b13..ff1a250 100644
--- a/README.md
+++ b/README.md
@@ -460,6 +460,20 @@ For end-to-end iOS + watchOS setup (including a launch-order-safe handshake), se
 ## Testing
 - Unit tests use Swift Testing (`Testing` package)
 
+## DocC Documentation
+
+DocC uses the SwiftPM-generated workspace under `.swiftpm/xcode/`.
+
+Build the documentation archive from the package root:
+
+```bash
+./Documentation/build-docc.sh
+```
+
+Docs live in two places:
+- `Sources/LocalData/Documentation.docc` (DocC guides and Home page)
+- `Documentation/` (additional reference docs)
+
 ## Storage Audit
 
 LocalData can generate a catalog of all configured storage keys, even if no data has been written yet. This is useful for security reviews and compliance.