Air Rights Calculator

This tool provides a quick estimate of your property’s Zoning Floor Area (ZFA)—also known as Buildable Square Footage (BSF), Development Air Rights or commonly referred to as just "Air Rights".

To check your lot sq. ft and zoning district click here

Lot Area (sq ft)

Residential Equivalent:

Results

Result

Value

LEGEND:

FAR (Floor Area Ratio): The multiplier used to determine how much total zoning floor area can be built on a lot.
BSF (Buildable Square Feet): The total amount of square footage that can be built, including any existing structures.
Standard FAR/BSF: The base allowable buildable area without any bonus from QRS or UAP.
QRS (Qualifying Residential Site): Applies to R1–R5 districts; sites that meet specific criteria can qualify for a FAR bonus.
UAP (Universal Affordability Preference): Applies to R6–R12 districts; a citywide optional affordable housing bonus from the standard FAR.
Commercial Overlay: A mapped commercial zoning layer added over a primary residential district.
Narrow/Wide Street Zoning: If applicable, lots within 100 feet of a street that is 75 feet or wider use the “Wide Street” FAR.
Commercial Zoning FARs: Calculated based on the assumption that the lot fronts on a Wide Street.
Multi-Family Zoning: Essentially any zoning allowing three or more units- Includes R3-2, R4, all R5 (except R5A), and all R6–R12 districts.
Max Stories / Unit Count: Shown as estimates based on QRS or UAP; actual limits may be lower under standard zoning.

For a more accurate, property-specific evaluation, please request a Zoning Analysis from our team.

Results from this air rights calculator are for informational purposes only and should not be relied upon as legal or professional advice.

ZoLa Land Use Map

Below is an embed of NYC's digital zoning and land use map website.

Search with an address and find your lot area (sq. ft) and zoning district.