510 East 21st Street, Brooklyn
technical data · neighborhood and transit
510 East 21st Street, Brooklyn: owner of record DITMAS FLATS LLC, assessed at $3,712,950, 225 open housing violations. Sourced directly from official city and county records.
Quick answers
- Who owns 510 East 21st Street?
- DITMAS FLATS LLC is the owner of record, per NYC Department of Finance (BBL 3051840006).
- How much did 510 East 21st Street last sell for?
- $26,500,000 on 2015-03-30, per the deed recorded in NYC ACRIS.
- What is the assessed value of 510 East 21st Street?
- $3,712,950, set by the NYC Department of Finance.
- Does 510 East 21st Street have open housing violations?
- Yes. NYC HPD lists 225 open violations, 68 immediately hazardous (class C).
- What is the 2026 conforming loan limit in Kings County?
- $1,209,750 for a single-unit home, per FHFA. Larger loans are jumbo loans.
- Is radon a problem here?
- EPA radon zone 3, low potential.
- What natural disasters is 510 East 21st Street at risk for?
- FEMA's National Risk Index rates the area very low overall.
Property records
Owner of record
Ditmas Flats LlcTax assessment
$3,712,950 · class D1
- DeedMar 30, 2015$26,500,000
Grantor (seller): Bsp East 21 Llc · Grantee (buyer): Ditmas Flats Llc
Recorded document scan - DeedDec 23, 2013$15,000,000
Grantor (seller): 520 Realty Ny Llc · Grantee (buyer): Bsp East 21 Llc
Recorded document scan - DeedJan 12, 2006
Grantor (seller): 520 East 21st Limited Liability Company · Grantee (buyer): Bnt 520 Llc, Sk 520 Llc, Jn 520 Llc
Recorded document scan - DeedJan 12, 2006$9,874,273
Grantor (seller): Cn 520 Llc, Fn 520 Llc, Bnt 520 Llc · Grantee (buyer): 520 Realty Ny Llc
Recorded document scan - DeedJun 25, 1996
Grantor (seller): David Evans Realty Corp · Grantee (buyer): 520 East 21 Limitedliability Company
- DeedMay 14, 1996
Grantor (seller): Neiss, Bencion · Grantee (buyer): 520 East 21st Limited Liability Co
- DeedMar 3, 1987
Grantor (seller): Caton Gardens Inc · Grantee (buyer): David Evans Rlty Corp
- DeedSep 30, 1986
Grantor (seller): David Evans Rlty Corp · Grantee (buyer): Neiss, Bencion
Sourced directly from official city and county records. BBL 3051840006
NYC records
Post-war elevator buildingTenant and buyer signals
Rent stabilization
Likely stabilized
Built 1951 with 102 homes, the profile NYC rent stabilization covers. Ask for the apartment's rent history from NYS HCR.
Elevator
Elevator building
City building class D1, 6 floors.
Hurricane zone
Evacuation zone 6
Zone 1 evacuates first, zone 6 last. Check the flood insurance history.
Alcohol licenses
None within 200 ft
No active on-premises liquor license on file with the NY State Liquor Authority.
Sources: NYC PLUTO, NYC Emergency Management, NY State Liquor Authority, OpenStreetMap. Rent status is an estimate from the building profile.
Tax lot 3051840006
- Built
- 1951
- Floors
- 6
- Homes
- 102
- Zoning
- R7A
- Floor area
- 103,494 sq ft
- Lot
- 27,000 sq ft
- Tax assessment
- $3.7M
Nearest subway
Click a station for walking directions.
Housing violations (HPD)
225 open
68 immediately hazardous · 134 hazardous · 23 non-hazardous
Heat and hot water, 2 years
111 complaints
Most recent Mar 2026
Bedbug filing, 2025
0 of 103 units reported infested.
Residential evictions, 5 years
No marshal evictions executed.
Building permits, 3 years
2
- Sidewalk Shed · Apr 2025
- Sidewalk Shed · May 2024
311 calls within 260 ft, 12 months
903
- Noise - Street/Sidewalk · 176
- Noise - Residential · 122
- HEAT/HOT WATER · 104
Safety and environment
FEMA natural hazard risk
Very Low
No single natural hazard ranks high for this area.
FEMA National Risk Index, census tract
Leaking fuel tanks
2 within 1,650 ft
Nearest: 2010 Croxy Avenue , 2010 Croxy Avenue (700 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Radon potential
Low
Geology here keeps indoor radon low on average.
EPA and USGS Geologic Radon Potential Map
Nearest public schools
1,750 ft
PS 245 (1,750 ft), PS 139 ALEXINE A FENTY (2,000 ft), SUCCESS ACADEMY CHARTER SCHOOL-FLATBUSH (2,750 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
9.4 mi
John F. Kennedy (JFK). Aircraft may be audible under approach paths.
FAA large-hub airports
Conforming loan limit 2026
$1,209,750
Kings County. Mortgages up to this amount qualify for Fannie Mae and Freddie Mac pricing. Above it, the loan is a jumbo with stricter terms.
FHFA Conforming Loan Limit Values, one-unit
Property tax after you buy
$7,000 a year
About $583 a month at New York's 1.40% median effective rate.
In New York City, small homes are capped at 6% a year (20% over five years), and the cap stays with the property through a sale.
Rough estimate. U.S. Census ACS median effective rates. Your county assessor sets the final bill.
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Who lives and works in Brooklyn
Creative studios, small business and young families on brownstone blocks
Brooklyn splits between brownstone neighborhoods where families stay for the schools and waterfront districts filled with studios, workshops and independent brands. Ownership is higher than in Manhattan and blocks are lower, greener and quieter.
- $76,912
- median household income
- 18.4%
- residents aged 25 to 34
- 31%
- households that own their home
What pays the bills
- Healthcare
- Education
- Creative and design
- Food and hospitality
- Construction
Who anchors the economy
Brooklyn Navy Yard · SUNY Downstate · Etsy · Pratt Institute · Industry City
The market is shaped around
- Families staying long term
- Creative freelancers
- First-time buyers
More on East 21st Street
All addressesViewing recommendations
What's worth checking in person before deciding.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- Ask specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Ask for the latest maintenance bill from a winter month, not a summer one: that's where the real cost of living there shows up.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
The year built, height regime, structure, and elevator for this address are being indexed right now, city by city. Save the page and check back: it fills in over time. If you live here, you can fill it in yourself in a minute by leaving a review.