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Zoning analysis in your browser.

See what’s there today, and what can develop within zoning.

Currently available for Manhattan.

35,000+ properties

Make sense of the rules faster.

It’s like having an in-house zoning expert on call. Confirm existing land use and zoning designations in seconds. Run preliminary 3D scenarios in minutes.

We've mapped a century of zoning rules

so you can focus on what develops next.


Locating a property is easy, no matter what information you have. Enter street address, block + lot number, or just pick a tax lot from the map.


Check out a site for what’s there today. Verify zoning districts, potential development rights, and existing built area.


Spending a key reveals what can develop within zoning. Calibrate your highest and best use based on zoning floor area and bulk constraints.

Run it again,
and again.

When you unlock a property, the 3D scenarios are unlimited. You have an all-access pass to make adjustments. Re-shape until you’re satisfied — the calculations will keep up.

"It used to take me 5-10 hours to read the zoning code and draft an analysis. With Envelope, I can do it in minutes, because the rules are built right in."

Brian Darling Senior Associate, Project Development, SHoP Architects

tax lots.

If you’re looking to expand your footprint, scan for assemblage opportunities with adjacent lots. Generate unified 3D scenarios in compatible zoning districts.

"Assemblage is where development gets really complex. Envelope has the logic already mastered, so I can assess immediately whether a lot is worth additional investigation.”

Zach Aarons Project Manager, Millennium Partners

Transfer rights.

If you want additional development rights, search for potential lot mergers. Add available floor area to your 3D scenario and know where transactions have already occurred.

Downloads are unlimited too.

Stacking Charts

Improve your pro forma calculations with accurate floor area metrics.


Export floorplates and surrounding tax lot boundaries.


Package zoning rules and property information into printer-friendly documents.