2031 3 Avenue, Manhattan 10029 is a 4,875 square foot lot zoned R9. RunEnvelope’s engine finds an as-of-right scheme with homes of 46,103 sf (Residential + Community Facility), against 4,875 sf built on the lot today.
That leaves 41,228 sf more floor area than stands here now, if the existing building were replaced.
City Planning’s PLUTO file lists a residential FAR of 7.52 for this lot, which at 4,875 sf of land is 36,660 sf. The engine’s largest residential-only scheme without an affordability obligation (Max Apartments) holds 36,660 sf, close to that simple multiplication.
Quality Housing height limit in R9 on a wide street: 145 ft (185 ft with the affordability preference). From the district’s rule set.
The largest 6 as-of-right schemes RunEnvelope’s engine produced for this lot, by zoning floor area. A full study also models the building itself: floor plates, heights, setbacks, unit mix and parking.
| Scheme | Type | Floor area | FAR | Homes |
|---|---|---|---|---|
| Community Facility | Community facility | 48,750 | 10.00 | None |
| Residential + Community Facility | Mixed use with homes | 46,103 | 9.46 | 36 |
| AIRS Senior Housing (100% Affordable) | Income-restricted housing | 43,972 | 9.02 | 47 |
| Max Apartments | Housing | 36,660 | 7.52 | 54 |
| Sky Exposure Plane Option | Housing | 36,660 | 7.52 | 40 |
| Commercial Overlay | Mixed use with homes | 36,659 | 7.52 | 34 |
Floor area is zoning floor area in square feet. Highlighted: the largest scheme with homes. Income-restricted schemes (Universal Affordability Preference, AIRS senior housing) require a share or all of the homes to be affordable. Shared housing counts rooms, not apartments. Schemes that need a landmark transfer of development rights, the FRESH food store bonus or a stack of every program are left off this page; the full study shows them.
As-of-right only: what the Zoning Resolution allows without a variance, special permit or rezoning. Computed by RunEnvelope’s zoning engine on October 23, 2026 from PLUTO 26v2 lot data, in screening mode: the engine uses the City’s recorded lot area and dimensions, not a surveyed lot outline.
This is not a professional opinion, an appraisal or a statement that anything will or should be built here. Existing tenants, leases and the owner’s plans are not part of it.
Why this lot has a page: we publish pages only for lots that clear a set of data quality and headroom tests.
The closest published lots in Manhattan, same zoning district first. All Manhattan lots.