3410 Broadway, Manhattan 10031 is a 6,797 square foot lot zoned R8. RunEnvelope’s engine finds an as-of-right scheme with homes of 48,940 sf (Existing Building: Retain & Enlarge (ZR 54-31)), against 20,000 sf built on the lot today.
That leaves 28,940 sf more floor area than stands here now, if the existing building were replaced.
City Planning’s PLUTO file lists a residential FAR of 6.02 for this lot, which at 6,797 sf of land is 40,918 sf. The engine’s largest residential-only scheme without an affordability obligation (Shared Housing (SRO)) holds 29,254 sf, 28% less than that simple multiplication suggests. On this lot the building rules, not the FAR, set the limit; the full study shows which one binds.
Quality Housing height limit in R8 on a wide street: 135 ft (175 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 |
|---|---|---|---|---|
| Existing Building: Retain & Enlarge (ZR 54-31) | Keeps existing building | 48,940 | 7.20 | 42 |
| Commercial Overlay | Mixed use with homes | 48,938 | 7.20 | 33 |
| AIRS Senior Housing (100% Affordable) | Income-restricted housing | 36,714 | 5.40 | 34 |
| UAP (City of Yes) | Income-restricted housing | 33,674 | 4.95 | 30 |
| Shared Housing (SRO) | Shared housing (rooms) | 29,254 | 4.30 | 91 rooms |
| Max Apartments | Housing | 29,254 | 4.30 | 63 |
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 21, 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.