673 Classon Avenue

Brooklyn · 11238 · BBL 3011490009 · look up another building

Most recent filing on this building: a violation, May 4, 2026

673 Classon Avenue is a multi-family walk-up in Prospect Heights, Brooklyn, ZIP 11238. City records date it to 1930 and count 8 apartments. The city's property file lists the owner of record as 673 CLASSON AVENUE REALTY LLC. Its total assessed value is $906K, for the 2026 tax year.

DHCR registration lists 2 rent-stabilized units here in 2023, but that is the building and not your apartment. The state will send you your own rent history free, and it is the only binding answer on what you should be paying.

Know the month this building changes

Most buildings here are quiet. Two filings a year is normal, so most months there's nothing to report on 673 Classon Avenue and we'll say so. The point is the month we do

Taxes and assessed value for 673 Classon Avenue

The city's Department of Finance assessed this lot at $906K for the 2026 tax year. That works out to $113K per residential unit. Assessed value is what the city taxes, not what the building would sell for, and the two routinely differ by a wide margin. The bill itself turns on the tax class rate and on any exemptions or abatements attached to the lot, neither of which is published here.

No executed evictions at 673 Classon Avenue

No executed eviction is on record at 673 Classon Avenue in the citywide marshal file, which runs from April 2024.

Rent stabilization at 673 Classon Avenue

DHCR registration records list 2 rent-stabilized units at this building in 2023, the most recent year PulseCities holds. Registration is building-level and does not settle the status of any single apartment; the rent history does. Checking your own apartment starts with the free rent history from the state. That is the only binding answer, and it takes time to come back. While you wait, you can get an email when the record here moves: a deed, an eviction, a permit or a violation filed on this building. How to check rent-stabilized status →

Open code violations at 673 Classon Avenue

HPD and DOB inspectors have written 20 violations against this building, of which 15 remain unresolved. That is more than 8 in 10 buildings its size in 11238. The most serious open grade here is immediately hazardous, with 6 open violations.

Classes run A (non-hazardous) to C (immediately hazardous); DOB class I carries a vacate order. Source: NYC HPD violations, current through October 10, 2026.

Violation history at 673 Classon Avenue

Violation	Issued	Class
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or…Nov Sent Out	May 4, 2026	A
Properly repair with similar material the broken or defective wood base cabinet at south in the kitchenNov Sent Out	Apr 17, 2026	B
Properly repair with similar material the broken or defective laminate floor tile in the kitchenNov Sent Out	Apr 17, 2026	C
Refit door in the bathroomNov Sent Out	Apr 17, 2026	B
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and all walls in the…Nov Sent Out	Apr 17, 2026	B
Properly repair or replace the broken or defective sliding door at entrance in the 4th room from eastNov Sent Out	Apr 17, 2026	B
Properly repair with similar material the broken or defective laminate floor tile in the 4th room from eastNov Sent Out	Apr 17, 2026	C
Repair, replace or provide an approved and operational carbon monoxide detecting device, installed in accordan…Nov Sent Out	Apr 17, 2026	B

The 8 most recent violations written against this building, newest first, 8 of them still open. Each row is the inspector's own wording with the statute citation removed. Source: NYC HPD violations, current through October 10, 2026.

311 complaint history at 673 Classon Avenue

18 complaints in the past 12 months

NYC 311 housing and building complaints logged for this address. Source: NYC 311, current through October 10, 2026.

How 673 Classon Avenue compares in 11238

35.3/100MODERATE AREA PRESSURE

PulseCities tracks 4,866 lots in 11238, of which 125 carry an executed eviction from the marshal record, which starts in April 2024, and 358 carry a deed from the shorter ACRIS window. 11238 scores 35.3 out of 100 for displacement pressure, 59 of 177 scored NYC ZIP codes. The full signal breakdown for Prospect Heights →

Other buildings on this block

The city's files carry a record for 8 other addresses on tax block 1149 in Brooklyn. They run in lot order, which is roughly the order you would walk them:

Questions about 673 Classon Avenue

Who owns 673 Classon Avenue?

The city's property file lists 673 CLASSON AVENUE REALTY LLC as the owner of record for 673 Classon Avenue. No deed for this lot appears in the ACRIS records PulseCities holds, so that name comes from the tax roll rather than from a recorded transfer.

Has 673 Classon Avenue changed hands recently?

No deed for 673 Classon Avenue appears in the ACRIS records PulseCities holds. That means no transfer has been published for this lot in the current window, not that the building has never been sold.

Have there been evictions at 673 Classon Avenue?

No executed eviction at 673 Classon Avenue appears in the NYC evictions dataset, which PulseCities holds from April 2024 forward. Executed evictions are the end of the process, so a building with none may still have active housing court cases.

Is 673 Classon Avenue rent stabilized?

DHCR registrations list 2 stabilized units at this building in 2023. Registration is building-level, so it does not settle whether one apartment is stabilized. The free rent history from NYS Homes and Community Renewal does.

What is 673 Classon Avenue assessed at for property taxes?

The Department of Finance assessed the lot at $906K for the 2026 tax year. That is the figure the city taxes rather than a sale price, and the bill depends on the tax class rate and on any exemptions on the lot.

What is the displacement risk around 673 Classon Avenue?

11238 (Prospect Heights) scores 35.3 out of 100 on the PulseCities displacement index. The score reads five ZIP-level signals: LLC acquisition rate, permit intensity, 311 complaint volume, executed evictions, and serious HPD violations. It describes the area around the building, not the building itself.

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Displacement signals for 11238 →Open the map →

Sourced from NYC public records: ACRIS deeds, DOB permits, the NYC evictions dataset, and 311. Records reflect what agencies have published and can lag events.