diff --git a/unified-runtime/source/adapters/offload/CMakeLists.txt b/unified-runtime/source/adapters/offload/CMakeLists.txt
index 70336c6b24cd5..423330faf4952 100644
--- a/unified-runtime/source/adapters/offload/CMakeLists.txt
+++ b/unified-runtime/source/adapters/offload/CMakeLists.txt
@@ -10,11 +10,6 @@ if (UR_OFFLOAD_INSTALL_DIR STREQUAL "")
     message(FATAL_ERROR "UR_OFFLOAD_INSTALL_DIR must be defined for the Offload adapter")
 endif()
 
-set(UR_OFFLOAD_INCLUDE_DIR "" CACHE PATH "Path to the directory containing LLVM headers")
-if (UR_OFFLOAD_INCLUDE_DIR STREQUAL "")
-    message(FATAL_ERROR "UR_OFFLOAD_INCLUDE_DIR must be defined for the Offload adapter")
-endif()
-
 # When targetting CUDA devices, we need a workaround to avoid sending PTX to
 # liboffload as the CUDA plugin doesn't support it yet. The workaround is to
 # simply always link the incoming program so it ends up as CUBIN. Try to find
@@ -68,6 +63,6 @@ target_link_libraries(${TARGET_NAME} PRIVATE
 )
 
 target_include_directories(${TARGET_NAME} PRIVATE
-    "${UR_OFFLOAD_INCLUDE_DIR}/offload"
+    "${UR_OFFLOAD_INSTALL_DIR}/include/offload"
     "${CMAKE_CURRENT_SOURCE_DIR}/../../"
 )
diff --git a/unified-runtime/source/adapters/offload/README.md b/unified-runtime/source/adapters/offload/README.md
new file mode 100644
index 0000000000000..b94e7465b954e
--- /dev/null
+++ b/unified-runtime/source/adapters/offload/README.md
@@ -0,0 +1,50 @@
+# Offload Adapter
+
+The Offload adapter is an experimental adapter built on top of LLVM's liboffload
+runtime.
+
+The main purpose of the adapter is to drive development of liboffload, and
+identify gaps that need addressed for full SYCL support.
+
+The long-term goal of the project is to replace Unified Runtime with liboffload.
+
+The adapter should be used with an upstream build of LLVM with the `offload`
+runtime enabled. The in-tree version is unlikely to be usable, as there are
+frequent breaking API changes which happen out-of-sync with pulldowns.
+
+## Building upstream LLVM with Offload enabled
+The `liboffload` library will be built if the `offload` runtime is enabled. An
+example CMake configuration is:
+```sh
+cmake -S llvm -B build -GNinja \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX=$PWD/build/install
+  -DLLVM_ENABLE_PROJECTS='clang;clang-tools-extra;lldb;lld;' \
+  -DLLVM_ENABLE_RUNTIMES='offload;openmp'
+```
+
+Because Offload's API header is generated with tablegen at build time, the
+runtime must be installed rather than just built so it gets copied into the
+correct location. From either the top-level build or runtime build directory:
+```sh
+$ ninja install
+```
+
+## Building the adapter
+Build UR/DPC++ with the following additional flags:
+```
+  -DUR_BUILD_ADAPTER_OFFLOAD=ON
+  -DUR_OFFLOAD_INSTALL_DIR=<path to upstream llvm install>
+```
+
+## Testing the adapter
+The adapter can be tested with UR CTS via the
+`check-unified-runtime-conformance-offload` target.
+
+It is also possible to run the SYCL E2E tests by configuring with
+```sh
+  -DSYCL_TEST_E2E_TARGETS=offload:gpu
+  -DOFFLOAD_BUILD_TARGET=<build-target>
+```
+where `<build-target>` is one of `target-nvidia` or `target-amdgpu`, depending
+on the available device.