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1400 Broadway is zoned C6-4.5 within the Special Midtown District (SNX subarea). As-of-right FAR is 12.0 with an additional 3.0 FAR available through the Voluntary Mandatory Inclusionary Housing (MIH) program (ZR 23-154). Combined with the ZR 81-27 subway improvement bonus, the buildable envelope reaches 15.0 FAR. Existing improvements total 12.0 FAR, leaving approximately 148,000 sf of residual air rights that can be developed as a vertical addition.
The project will require Building Permit (NYC DOB), zoning approval, MIH application, LPC comment (adjacent historic), NYSDEC SEQRA review, FAA Form 7460, and utility approvals. Estimated concept-to-CO timeline: 30–36 months. Approval probability at Community Board 5, given precedent for MIH-eligible additions in the district, is estimated at 78%.