What the listing does not show
811 Classon Avenue #3A
in 811 Classon AvenueBrooklyn, NY 11238Walk-up apartment buildingModerate risk
Listed at $849,000. The listing does not mention what city records show: 9 open housing violations and 7 open building violations. Read them before you offer, and be ready to explain them if you are selling.
- Asking
- $849,000
- Beds
- 1 bed
- Baths
- 2 baths
- Size
- 817 ft²
- Building
- Walk-up apartment building
- Built
- 1920
- Open housing violations
- 9
- Immediately hazardous
- 0
- Open building violations
- 7
- Unresolved penalties
- 0
01 / Findings
What to ask about
City records a buyer can raise and a seller should be ready to explain. A reading of open filings, not a forecast.
- 019 open housing violations, none of them immediately hazardous.
- 027 open Buildings Department violations, which can slow a closing.
- 03Checked: no unresolved penalties on file.
- 04The required housing registration expired more than a year ago.
- 051 tax lien document on record.
02 / Building
The building
City records for 811 Classon Avenue, the building this listing is in. Department of Finance class C1: Walk-up apartments.
- Type
- Walk-up apartment building
- Year built
- 1920Alterations: 2011
- Floors
- 4
- Units
- 1212 residential
- Building area
- 7,564 ft²
- Residential / commercial
- 7,564 / 0 ft²
- Lot
- 2,000 ft²25 × 80 ft
- Assessed value
- $638,550Tax assessment, not market value
- Assessed land
- $45,000
- Tax exemption
- None
04 / Checked
What was checked
A zero means the file exists and is clear. A dash means the city has no file for this address, which is not the same thing.
Housing (HPD)
9
open violations
0 immediately hazardous, 5 hazardous, 3 non-hazardous, 1 informational.
Registration expired, ended Sep 1, 2025. Owner state NY.
Buildings (DOB)
7
open violations
1 safety-related. Most recent open filing Jul 25, 2024.
Permits, unsafe structures, boilers, elevators, facades.
Penalties (ECB)
0
unresolved
No unresolved penalties on file.
Unpaid balance
05 / Full report
Not on the listing
Sale prices, mortgage amounts and document amounts the city has on file. The listing does not include them.
37 recorded documents · 1 sale of $10,000 or more · Last sale 2013 · Last mortgage 2015
Unlock the recorded amounts for 811 Classon Avenue #3A
After you register, the paid report includes who owns the building, plus the amounts below from the city file.
- Owner details
- Last sale price
- Mortgage amount
- Unpaid penalty balance
- Recorded document amounts
Paid report
The rest of 811 Classon Avenue #3A is not on the listing
After you register, the paid report names the owner. It also includes the city-file amounts the listing leaves out.
- Owner details
- Last sale price
- Mortgage amount
- Unpaid penalty balance
- Recorded document amounts
Same building
Other listings at 811 Classon Avenue
06 / FAQ
Questions
How many open violations does 811 Classon Avenue #3A have?
As of Oct 6, 2026, the building at 811 Classon Avenue has 9 open HPD violations (0 Class C, 5 Class B, 3 Class A, 1 Class I), 7 open DOB violations, 0 unresolved ECB penalties. These are building records, so they apply to this listing.
Is this property in a flood zone?
No. The lot is not inside a FEMA 100-year flood zone on the 2007 or 2015 maps.
What amounts are recorded for 811 Classon Avenue?
Owner details are in the paid report, available after you register. Last sale price, Mortgage amount, Unpaid penalty balance, Recorded document amounts are in the city file and included there too.
Where does this data come from?
Records are combined from NYC DCP PLUTO (tax lot, zoning, FAR); NYC HPD (housing violations and registrations); NYC DOB and ECB (building violations and penalties); NYC ACRIS (recorded deeds, mortgages and satisfactions); Active for-sale listings. PLUTO version 26v2.
Sources
NYC DCP PLUTO (tax lot, zoning, FAR) · NYC HPD (housing violations and registrations) · NYC DOB and ECB (building violations and penalties) · NYC ACRIS (recorded deeds, mortgages and satisfactions) · Active for-sale listings
PLUTO 26v2, refreshed Oct 6, 2026. Written for people buying or selling this property. Not legal, tax, or appraisal advice. Confirm the details with the city before you offer or list.