diff --git a/.circleci/config.yml b/.circleci/config.yml
index 050d707f84..05e01076e9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -388,6 +388,9 @@ jobs:
       - run:
           name: Override build ID
           command: $env:CIRCLE_BUILD_NUM = "$env:CIRCLE_BUILD_NUM-win"
+      - run:
+          name: Build demo-project
+          command: .\garden-service\dist\windows-amd64\garden.exe build --root .\examples\demo-project\ --logger-type basic --env testing
       - run:
           name: Deploy demo-project
           command: .\garden-service\dist\windows-amd64\garden.exe deploy --root .\examples\demo-project\ --logger-type basic --env testing
diff --git a/garden-service/src/build-dir.ts b/garden-service/src/build-dir.ts
index 14409ec6d9..123e18c389 100644
--- a/garden-service/src/build-dir.ts
+++ b/garden-service/src/build-dir.ts
@@ -161,6 +161,13 @@ export class BuildDir {
     // --exclude is required for modules where the module and project are in the same directory
     const syncOpts = ["-rptgo", `--exclude=${this.buildDirPath}`, "--ignore-missing-args"]
 
+    // We have noticed occasional issues with the default rsync behavior of creating temp files when copying
+    // when using Windows/cwRsync. This workaround appears to do the trick, but is less optimal so we don't apply
+    // it for other platforms.
+    if (process.platform === "win32") {
+      syncOpts.push("--inplace")
+    }
+
     let logMsg =
       `Syncing ${module.version.files.length} files from ` +
       `${relative(this.projectRoot, sourcePath)} to ${relative(this.projectRoot, destinationPath)}`