Two crews from Newport Pagnell and one crew from West Ashland attended a fire in a garage measuring approximately 10 by 15 metres.
Firefighters used two sets of breathing apparatus, one hose reel jet and a thermal imaging camera to extinguish the fire.
Electricity was isolated to the affected address to ensure the safety of crews and residents.
Firefighters carried out damping down and turning over to prevent re‑ignition.