251 Saint Marks Avenue
251 Saint Marks Avenue, Brooklyn, NY 11238
Prospect Heights, Brooklyn
BBL 3011457506 · BIN 3028205
- Year built
- 2024
- Type
- Condominium
- Landmark
- Landmark or historic district
Every recorded sale at this building, 2023–2024
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2024
- $1,382
- 1 sale
- Listing discount
- 0.0%
- Recorded sales
- 7
- On record
- 2023–2024
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 251 Saint Marks Avenue would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.
251 Saint Marks Avenue is a seven-residence condominium on a 5,240-square-foot lot in Prospect Heights. It began as a two-story, 25-foot industrial building from 1930, classed as a factory in city records, which sold in November 2021 for $3,600,000 per Department of Finance records. The developer kept parts of the old structure and built up to four stories plus a penthouse level.
It is already sold out. Department of Finance records show all seven residences deeded between October 2023 and July 2024, at a combined $12,835,000. That is 97.2% of the $13,205,000 current total in the Attorney General record, a close match between plan pricing and recorded prices for a building of this size.
A buyer here is now buying a resale, not a sponsor unit. The recorded sponsor prices set the baseline.
Architecture and residences
ARC Architecture + Design Studio filed the job in September 2021 as an alteration that converts the building to a new use, with existing elements to remain. The filing takes the building from two stories and 25 feet to four stories and a penthouse at 50 feet, from no dwelling units to seven. Structural work is a concrete-block structure with light-gauge joists. The first permit issued in April 2022, and the main job was signed off with a certificate of occupancy on December 24, 2024. PLUTO now records 9,536 square feet of building area.
The units are numbered 1A, 1B, 2A, 3A, 3B, 4A and 4B, and run from a one-bedroom of about 886 square feet (4B, with a private roof terrace of about 457 square feet) to a three-bedroom duplex of about 1,773 square feet with a garden (1B), per the sponsor's listing records. Listing records show common charges of about $232 a month on 4B, $307 on 3B, $331 on 1A and $470 on 1B. Confirm the current budget with the managing agent.
Offering and recorded sales
Per the offering plan filed with the New York State Attorney General (plan CD220185), the sponsor, Hinsdale Holdings LLC, submitted the plan on August 23, 2022, and the Attorney General accepted it on January 25, 2023. The initial total offering price was $12,520,000. The current total is $13,205,000, so amendments added $685,000. The amendments themselves were not reviewed. The Attorney General's online record returned no data in October 2026, so these figures come from the Attorney General's plan database extract. That extract shows no effective date and lists two units sold. Neither is current: deeds can only follow a plan declared effective, and all seven units have closed.
ACRIS and Department of Finance records show these sponsor sales. Layouts and approximate interior areas are from the sponsor's listing records; price per square foot is our arithmetic.
| Residence | Layout | Approx. sq ft | Deed date | Recorded price | $/sq ft |
|---|---|---|---|---|---|
| 3B | 2 bed + office, 2 bath | 1,143 | October 24, 2023 | $1,635,000 | $1,430 |
| 3A | not confirmed | not confirmed | October 26, 2023 | $2,100,000 | — |
| 4B | 1 bed + office, 1 bath | 886 | October 26, 2023 | $1,095,000 | $1,236 |
| 1A | 2 bed duplex, 2 bath | 1,455 | November 9, 2023 | $1,795,000 | $1,234 |
| 4A | 2 bed, 2 bath | 1,367 | November 15, 2023 | $1,925,000 | $1,408 |
| 2A | 2 bed, 2 bath | 1,416 | November 17, 2023 | $1,835,000 | $1,296 |
| 1B | 3 bed duplex, 3 bath | 1,773 | July 11, 2024 | $2,450,000 | $1,382 |
The average is about $1,834,000 per residence. The six residences with a known size total about 8,040 square feet and $10,735,000, or about $1,335 per square foot, our arithmetic. 1B was listed at $2,750,000 in October 2023 and recorded at $2,450,000, about 11% below that first ask. 4B came back to market as a resale in September 2024 at $1,249,000 (about $1,410 per square foot); no resale deed is recorded in ACRIS as of October 2026. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
Local Law 97
This building is below the 25,000 sq ft threshold at which LL97 limits apply to a building on its own. It is still covered if it shares a tax lot or condominium board with buildings totaling over 50,000 sq ft; confirm on DOB’s covered-buildings list.
See full Local Law 97 analysis →Recent sales
Recent closings at this building, from The Roebling Research Library. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jul 11, 2024 | 1B | 3 BR · 3 BA · 1,773 sf | $2,450,000 | $1,382/sf | -10.9% |
| Nov 17, 2023 | 2A | 2 BR · 2 BA · 1,416 sf | $1,835,000 | $1,296/sf | +0.0% |
| Nov 15, 2023 | 4A | 2 BR · 2 BA · 1,367 sf | $1,925,000 | $1,408/sf | +0.0% |
| Nov 9, 2023 | 1A | 2 BR · 2 BA · 1,455 sf | $1,795,000 | $1,234/sf | +0.0% |
| Oct 26, 2023 | 3A | 2 BR · 2 BA · 1,425 sf | $2,100,000 | $1,474/sf | +2.4% |
| Oct 26, 2023 | 4B | 1 BR · 1 BA · 886 sf | $1,095,000 | $1,236/sf | -1.8% |
| Oct 24, 2023 | 3B | 2 BR · 2 BA · 1,143 sf | $1,635,000 | $1,430/sf | -3.0% |
Market read. Most recent trades (2024) cleared a median $1,382/sf (recorded) across 1 sale. Median listing discount 0.0% from the last ask.
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01145-7506; each condominium apartment is its own tax lot). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage from recorded condo declarations and offering plans.
What would your apartment rent for?
Enter your apartment and I'll send you what it would rent for, from comparable closed leases at 251 Saint Marks Avenue and nearby.
Buying here? Condo closing costs with a mortgage typically run 3 to 6% of the price. See NYC co-op and condo closing costs, line by line.
Keep up with 251 Saint Marks Avenue and its market
The Roebling Report, monthly: Manhattan sales data and analysis, including buildings like 251 Saint Marks Avenue. Unsubscribe anytime.
We’ll use your email for The Roebling Report and note your interest in this building. See our privacy policy.
What to know if you’re buying
This is a resale building now. The sponsor's units have all closed, so any sale here is a resale between owners. The seller usually pays the New York State and New York City transfer taxes. The buyer pays the state mansion tax of 1% at $1 million and above.
Conversion diligence. Parts of the 1930 structure remain. Ask for the certificate of occupancy, the engineer's sign-offs, and any open items at the Department of Buildings. Ask the managing agent for the reserve fund balance and any open warranty claims against the sponsor.
Board control. The sponsor has no unsold units, so the board should now belong to the owners. Confirm in the board minutes that control has turned over.
Tax position. No tax abatement was confirmed in this review. Get the current tax bill for the unit from the Department of Finance.
What to know if you’re selling
The sponsor prices are the comps. Seven recorded prices from 2023 and 2024 are the most direct evidence a buyer will weigh. No resale has recorded yet; the one resale ask on record, 4B at $1,249,000 in September 2024, was 14% above its 2023 sponsor price.
Outdoor space and layout drive the spread. Recorded prices ran from $1.095 million to $2.45 million in a seven-unit building, so the gap comes down to size, floor and outdoor space more than location within the building.
Comparable buildings
If you're considering 251 Saint Marks Avenue, also look at these Prospect Heights condominiums:
- 650 Bergen Street — nine-residence condominium across three low-rise buildings on the same block
- 747 Dean Street — four-residence new-construction condominium that sold out in 2024 at $1.8 million to $2.495 million
- 766 Dean Street — four-residence condominium under construction on the site of a 1920 townhouse
- 149 Prospect Place — historic-district rowhouse converted to five residences
- 280 Saint Marks Avenue — 31-unit DXA studio condominium on the same avenue, just outside the historic district
- 550 Vanderbilt Avenue — the 278-unit CookFox condominium at Pacific Park, for a full-service contrast
More Prospect Heights buildings
- 225 Park Place — 1940 co-op
- 230 Park Place — 1937 co-op
- 240 Prospect Place — 1898 condop
- 26 Butler Place — 1915 condominium
- 272 Saint Marks Avenue — 2011 condominium
- 274 St. John's Place, 274 St. John's Place · Prospect Heights — 1912 co-op
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Prospect Heights.
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
Considering a move at 251 Saint Marks Avenue?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
646.939.7375 · c.cohen@compass.com