diff --git a/pw_presubmit/py/pw_presubmit/build.py b/pw_presubmit/py/pw_presubmit/build.py
index 38622c1..3879cf3 100644
--- a/pw_presubmit/py/pw_presubmit/build.py
+++ b/pw_presubmit/py/pw_presubmit/build.py
@@ -22,6 +22,7 @@
 from pathlib import Path
 import re
 import subprocess
+from shutil import which
 from typing import (Collection, Container, Dict, Iterable, List, Mapping, Set,
                     Tuple, Union)
 
@@ -64,6 +65,10 @@
         # Fall-back case handles integers as well as strings that already
         # contain double quotation marks, or look like scopes or lists.
         transformed_args.append(f'{arg}={val}')
+    # Use ccache if available for faster repeat presubmit runs.
+    if which('ccache'):
+        transformed_args.append('pw_command_launcher="ccache"')
+
     return '--args=' + ' '.join(transformed_args)