A Sydney home has been left with structual damge and needing stabilising supports after a car crashed through its garage.

Police said a car being driven on York Rd in Kellyville smashed into the home about 12.15pm on Sunday.

Paramedics rushed to the scene and found the driver and passenger, both 17-year-old boys, without serious injury.

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The driver was subjected to roadside testing, which returned a negative result, police said.

Fire and rescue crews were required to stablise the home due to the extensive damage. Credit: 7NEWS

The two teens managed to walk away from the crash uninjured. Credit: 7NEWS

The home was not occupied at the time, however, Fire and Rescue crews were required to stabilise the property due to “extensive damage” sustained in the crash.

“An investigation into the circumstance surrounding the crash is underway,” police said.

Anyone with information or CCTV is urged to contact crime stoppers.