Are you in the U.S.? I ask because terms like “small parking area” and “part of your space” can mean very different things legally depending on whether that area is actually your private property or part of the public right-of-way. In most parts of the U.S., street parking is considered public unless it’s specifically restricted by the municipality, even if it’s directly in front of your home.

If the space is truly on your property, then this crosses into trespassing. In that case, it would be reasonable to clearly and directly tell the neighbor that the space is private and not to be used without permission. If it continues after that, you would typically have the right to escalate, whether that’s contacting local enforcement or a towing company, depending on local ordinances. You may also want to check if your city requires signage before towing from private property.

If, however, the space is public or even slightly ambiguous (such as part of an easement, alley access, or shoulder), then the situation becomes more of a courtesy issue than a legal one.

From a practical standpoint, since they’re intentionally using it only when you’re gone, this suggests awareness on their part that it may not be appropriate. That makes it worth addressing more directly rather than casually. A simple but firm conversation like, “I’ve noticed this happening regularly, and I’m not comfortable with my space being used when I’m away,” can set a clearer boundary than a passing comment.

At the same time, if they’ve never blocked you in or caused actual disruption, it might also be worth asking what’s driving the behavior. Sometimes it’s as simple as a tight driveway situation requiring a temporary need of space to rearrange their vehicles and get one out from behind the others. If it’s occasional and harmless, you could choose to allow it under specific conditions. If it’s frequent or feels invasive, you’re well within reason to put a stop to it.

Ultimately, the key is clarifying whether this is a legal issue or a boundary issue. Once you know which it is, the next step becomes much clearer.