diff --git a/scripts/Build-Pkg b/scripts/Build-Pkg
index e8acc93b5..8b6ae8c6c 100755
--- a/scripts/Build-Pkg
+++ b/scripts/Build-Pkg
@@ -187,7 +187,8 @@ desktopfiles="$( echo ${base}/package/*/${pkg} )/*.desktop"
 export ROCK_PKG=$pkg
 export ROCK_XPKG=$xpkg
 
-mkdir -p "$builddir"; chmod 700 "$builddir"
+# Set permissions and ownership of $buildir; $base/build might have different ones.
+mkdir -p "$builddir"; chmod 700 "$builddir" ; chown 0:0 "$builddir"
 
 if [ "$chroot" = 1 ] ; then
 
diff --git a/scripts/Build-Target b/scripts/Build-Target
index 65ae443f2..2d4ea9f2d 100755
--- a/scripts/Build-Target
+++ b/scripts/Build-Target
@@ -91,9 +91,12 @@ fi
 export ROCK_BUILD_TARGET=1
 
 build_root="$base/build/$ROCKCFG_ID"
+# Set permissions and ownership of $build_root; $base/build might have different ones.
+mkdir -p "${build_root}" ; chmod 700 "${build_root}" ; chown 0:0 "${build_root}"
+
 build_rock="$base/build/$ROCKCFG_ID/ROCK"
 build_logs="$build_rock/logs" ; mkdir -p "${build_logs}"
-build_pkgs="$build_rock/pkgs" ; mkdir -p "${build_root}"
+build_pkgs="$build_rock/pkgs" ; mkdir -p "${build_pkgs}"
 
 if [ "$ROCKCFG_PARANOIA_CHECK" = 1 ] ; then
 	./scripts/Check-System -paranoia || exit 1