In 2026, the legality of a neighbor parking "too close" to your driveway depends on your local municipal bylaws, but the general rule in most of the US and UK is that no part of a vehicle may overhang or block the "curb cut" (the sloped part of the sidewalk). If a car is even partially blocking your access, it is usually a towable offense. However, if they are simply parking on the street right up to the edge of your driveway, it is generally legal unless there is a specific ordinance requiring a 3-foot or 5-foot clearance (which exists in some California and New York jurisdictions). Your first step in 2026 should be a polite conversation, as many neighbors aren't aware of the difficulty it causes for backing out. If the behavior persists and is truly unsafe, you can document the dates and take photos to report the "obstructing vehicle" to your local parking enforcement or non-emergency police line. You are generally not allowed to "claim" the public street space in front of your house for yourself.