Lot frontage

Lot frontage is the length of a lot along its street line — how much street the lot touches. It is one of the two numbers that summarize a lot's shape (depth is the other), and it drives more rules than it appears to: narrow frontage triggers the height restrictions for narrow buildings in dense residence districts, frontage arithmetic bounds curb-cut feasibility for parking and loading, and street-wall obligations run its length.

Frontage also carries the commercial logic of retail — display, entry, and visibility all consume street length — which is why corner lots, with frontage on two streets, behave differently in both the rules and the market. The figure is a recorded fact of the tax map, not an estimate.