Property Protection Insurance is a specific part of some states' no-fault auto insurance systems. Not all states require it, but where it's required, it's mandated by state law for every registered vehicle, often with a required coverage limit in the range of one million dollars.

What it actually covers: accidental damage your vehicle causes to someone else's tangible property — a fence, a building, a properly parked car — regardless of who was at fault in the incident. That "regardless of fault" detail is the entire point of a no-fault structure, removing the need to prove blame before coverage kicks in.

What it does not cover matters just as much. It doesn't cover damage to your own vehicle. It doesn't apply outside the state that requires it, where standard property damage liability coverage takes over instead. And it doesn't apply if you collide with another moving vehicle rather than something stationary or parked.

Because a no-fault system generally doesn't allow drivers to sue for vehicle repair costs the way many other states do, separate collision coverage is often worth carrying alongside this coverage, specifically to protect your own vehicle, which this specific coverage was never designed to cover in the first place.

If you're driving somewhere that requires this coverage, you already have it, whether or not you've ever looked closely at what it actually does. Knowing the real boundaries — what it covers and what it doesn't — matters the moment an actual accident happens, not before.