What is Frontage? Zoning Definition

What Frontage Means

Frontage is the width of your lot where it meets the street. Most zoning codes set a minimum frontage requirement -- for example, a residential zone might require at least 50 feet of street frontage. This ensures every lot has adequate road access and maintains consistent neighborhood character. Frontage is measured along the street right-of-way line, not at the widest part of the lot, which is particularly important for irregularly shaped or pie-shaped lots on cul-de-sacs.

Why Frontage Matters for Property Buyers

Insufficient frontage can make a lot unbuildable under current zoning, even if the total lot area is large enough. This is a common issue with flag lots (lots accessed by a narrow strip) or lots created by subdivision that do not meet current standards. If you are buying a vacant lot for development, verify that it meets the minimum frontage requirement for the zone. Lots that lack adequate frontage may need a variance before a building permit can be issued.

Practical Details

• Corner lots have frontage on two streets, which can trigger two front setbacks and reduce the buildable area.
• Cul-de-sac lots may have very narrow frontage at the street but widen significantly behind the front setback line. Some codes have special frontage rules for these situations.
• Commercial properties often have greater value with more frontage because of visibility and signage opportunities.
• Flag lots typically have a narrow "flagpole" strip providing access to the street. The frontage of this strip may or may not meet minimum requirements depending on local rules.
• Frontage requirements can prevent lot splits if the resulting parcels would each have insufficient street frontage.