Alteration (Moderate) · DOB Job #140984291

420 Riverside Drive, Manhattan

Installation Of New Ada-compliant Route Including Removal Of Existing Concrete Slab-on-grade Sections & Stone Curb & Existing Stair Assemblies; Removal/ Replacement Of Exterior Brickwork & Installation Of Ada-compliant Lift, New Fence & Gate. No Change To Use, Egress Or Occupancy.

Borough: Manhattan
Neighborhood: Morningside Heights
Job Number: 140984291
Filing Type: Alteration (Moderate)
Status: Signed Off
Stories Proposed: 13 stories
Height Proposed: 130 ft
Dwelling Units Proposed: 104
Estimated Cost: $135K
Last DOB Action: Sep 17, 2026
BBL (Borough-Block-Lot): 1018960001
Owner / Applicant: C/o Hoffman Management
Architect / Engineer of Record: Charles Huang (Registered Architect)

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Permits & Contractors on File

Mamais Contracting CorpEW permit

Live from DOB Permit Issuance, cross-referenced by this job number — the business actually pulling the permit, not necessarily the filing applicant above.

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Source: NYC Department of Buildings, Job Application Filings.

420 Riverside Drive, Manhattan☆Save

Permits & Contractors on File

420 Riverside Drive, Manhattan