Manhattan · BBL 1006920041
510 West 21 Street
Also recorded as 510-520 West 21 Street
- Use
- Warehouse
- Floors
- 8
- Built
- 1928
- Zoning
- M1-5 · built FAR 9.01 of 6.5
- Building
- 124,385 SF
- Lot
- 13,800 SF
- Assessed
- $11,231,550
Special District WCh
What changed
Recorded and self-reported changes detected June 3, 2026 → September 1, 2026 · derived September 1, 2026
No qualifying recorded change was detected for this building in Atlas's change-detection window (June 3, 2026 → September 1, 2026). This is a detection result, not a stability claim. Standing conditions may predate the window.
Ownership
- Owner of record
- Sm I Mms, L.L.C.
- Last deed
- Recorded December 29, 2021 for $95.2M · from West 21ST Street Properties, LLC · to SM I MMS, L.L.C. · held ~4 years (derived from the deed date)
- State filing
- Foreign Limited Liability Company · formed November 24, 2021 · NYS DOS
1 individual named on file (HPD, DOB or state filings). Sign in to see them.
Sources & vintages
- DCP MapPLUTO / DOF assessment roll: owner of record · PLUTO bake (2026-07 pipeline): the recorded owner, often an entity; never beneficial ownership
- ACRIS: recorded deed · ACRIS as fetched (2026-07 pipeline)
- HPD multiple-dwelling registration: principals as filed · 2026-07-30: self-reported annual filing; names and roles only
- NYS DOS Active Corporations: entity filing · 2026-07-30: LLCs file no members; corporations may name a chairman/CEO
Recorded debt
Last recorded mortgage: March 31, 1997 · $60K (agreement recorded February 15, 2022 — the amount is the original note, not the current balance; ACRIS records the instrument, not its maturity)
- July 17, 1998 Mortgage assigned
- July 17, 1998 Mortgage assigned
- July 17, 1998 Mortgage assigned
- July 17, 1998 Mortgage assigned
- March 31, 1997 Mortgage assigned
Sources & vintages
- ACRIS: recorded mortgage instruments · ACRIS as fetched (2026-07 pipeline): ACRIS carries no maturity date
Open recorded matters
Open violations: 16 DOB · latest September 6, 2019
Facade (FISP / Local Law 11): Safe with a repair and maintenance program (SWARMP) · cycle 9 · filed February 17, 2024.
Sources & vintages
- DOB / ECB / HPD: open violations · PLUTO bake (2026-07 pipeline)
- DOF: lien-sale eligibility list · as fetched (2026-07 pipeline)
- ACRIS judgments · DOB FISP/LL11 facade filings · as fetched (2026-07 pipeline)
Freshness
- PLUTO (lot, building, zoning, owner of record)PLUTO bake (2026-07 pipeline)
- ACRIS (deeds, mortgages, judgments)ACRIS as fetched (2026-07 pipeline)
- HPD / DOB / DOS filings (principals)2026-07-30
- Atlas change detection2026-09-01 · window 2026-06-03 → 2026-09-01
Everything on this page is drawn from the digitized public record for this lot. Where a section shows nothing, Atlas has no digitized record of that kind for this building.