diff --git a/build.sh b/build.sh
index e26f9574..4fb10a56 100755
--- a/build.sh
+++ b/build.sh
@@ -66,7 +66,12 @@ if [[ $1 == "Clean" ]]; then
 fi
 
 build_type=$1
-install_prefix="/usr/local"
+if [ -z $CASCADE_INSTALL_PREFIX ]; then
+    install_prefix="/usr/local"
+else
+    install_prefix=$CASCADE_INSTALL_PREFIX
+fi
+
 cmake_defs="-DCMAKE_BUILD_TYPE=${build_type} -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_INSTALL_PREFIX=${install_prefix} -Dpybind11_DIR=`pybind11-config --cmakedir`"
 build_path="build-${build_type}"