420 12 Street
BBL 3010980001Park Slope · Brooklyn
Floors
4
Built
1881
Area
109.4ksf
Units
70
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AI answers · grounded in the full record
Brick's analyst reads the complete dossier — the ownership network, the development math, the debt history — and answers in plain English.
Address
PLUTO · DOF parcel identity
- Property address
- 420 12 STREET
- Alternate address(es)
- 391-405 7 Ave406-418 12 St422-424 12 St393-407 13 St
- Zip code
- 11215
- Neighborhood
- Park Slope
- Borough
- Brooklyn
- Block & lot
- 01098-0001
Zoning & buildable
Lot 40,800 sf · R6B / R6A
- Zoning district
- R6B / R6A
- Landmark
- Park Slope Historic District Extension
- PLUTO building class
- C6
Park Slope Historic District Extension — LPC approval required for exterior changes visible from a public right-of-way.
FAR breakdown & buildable envelope — residential, commercial and community-facility headroom math in the full report.
Sign in to see itOwnership
PLUTO · owner of record
ANSONIA COURT TENANTS
- Ownership form
- Co-op
- Co-op
- Building-level ownership · units are shares, not lots
- Last recorded sale
- None since 2000
Tenancy & use
PLUTO units + DHCR rent-stabilization roll
70residential unitsnon-stabilized
- Residential sq. ft.
- 109,380
- Commercial sq. ft.
- 0
- PLUTO class
- C6
Lot
PLUTO · DOF parcel geometry
- Lot area
- 40,800 sf
- Dimensions
- 200.0 × 200.8 ft
- Position
- Corner lot
- Front street
- 13 ST
- Side street
- 12 ST
- D/F ratio
- 1.0 — shallow lot (atypical for NYC)
Financial
NYC Department of Finance · assessment + last recorded sale
- Total assessment
- $7.9M
- Land value
- $959K
- Exempt
- $37K($7.8M taxable)
- $/sf (implied)
- $72
Debt history · 2 mortgages on record · refinance-window signal detected — lenders, amounts and maturity timing in the full report.
Sign in to see itCompliance
HPD & DOB · violations + complaints + jobs
Minor activity
0 open HPD violations · 0 open HPD complaints · 8 active DOB jobs
- HPD violations (24 months)
- 0
- DOB violations (24 months)
- 1
- HPD complaints (24 months)
- 0
- HPD complaints (open)
- 0
- DOB jobs (24 months)
- 14
$689K in alteration permits over last 24 months
Provenance
Every datum on this page is sourced from public NYC + federal datasets, refreshed on the schedule below.
| Source | What it covers | Last refresh |
|---|---|---|
| PLUTO | NYC DCP · physical / zoning / ownership baseline | Jul 9, 2026 |
| ACRIS | NYC DOF · deed + mortgage history | Jul 9, 2026 |
| HPD | Housing Preservation & Development · violations + complaints | Jul 9, 2026 |
| DOB | Department of Buildings · violations + permits | Jul 9, 2026 |
| DHCR | Rent Stabilization roll (through 2024) | Jul 9, 2026 |
| LPC | Landmarks Preservation Commission · landmark status | not loaded |
| Footprint | NYC DoITT photogrammetric building polygons | not loaded |
Assembled at Jul 9, 2026. Discrepancies between sources reflect upstream-data quality, not assembly bugs — file in our quality tracker.