450 3rd Street
450 3rd Street, between Sixth and Seventh avenues, Park Slope
BBL 3009830012 · BIN 3021126
- Year built
- 1940
- Type
- Cooperative
- Landmark
- No
- Amenities
- Basement storage, bicycle storage and lobby stroller parking; in-unit laundry in selected homes
Every recorded sale at this building, 2005–2025
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- Recent range
- $2.3M – $2.3M
- Listing discount
- 0.0%
- Recorded transfers
- 7
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 450 3rd Street 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.
About the building
450 3rd Street is a four-story limestone cooperative set behind a shallow front forecourt. Its roughly 46-foot-wide building footprint supports substantial apartments within an eight-residence ownership structure. The façade's broad windows and the depth of the building produce separate front and rear rooms. Basement storage and bicycle facilities supplement the apartments, with space at lobby level for stroller parking.
Three-bedroom layouts of roughly 1,250–1,300 square feet recur in the building. Separate dining rooms, windowed kitchens and north-south exposures are recurring features of these plans. Original wood floors, pocket doors, moldings and built-in dining-room cabinetry survive in selected homes. Some ceilings reach about eleven feet. Renovated apartments have introduced in-unit laundry and updated kitchens while retaining the separation between living rooms, dining rooms and bedrooms.
Recent sales
Recent transfers at this building, curated by The Roebling Team research desk. 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 |
|---|---|---|---|---|---|
| May 30, 2025 | 1L | 3 BR · 1.5 BA | $2,300,000 | +0.0% | |
| Sep 12, 2022 | 2L | 3 BR · 1.5 BA | $1,900,000 | +7.0% | |
| Sep 10, 2020 | 2L | 3 BR · 1.5 BA | $1,475,000 | -4.8% | |
| Jun 23, 2005 | 2 | 3 BR · 1,250 sf | $739,000 | $591/sf | +0.0% |
Market read. $/sf is measured on the latest sales with reliable square footage (2005): a median $591/sf across 1 sale. The building has traded as recently as 2025. Median listing discount 0.0% from the last ask.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-00983-0012) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage on co-ops is not officially recorded, figures shown are approximate.
Buying here? Co-op closing costs typically run 2 to 3% of the price. See NYC co-op and condo closing costs, line by line.
Keep up with 450 3rd Street and its market
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What to know if you’re buying
The upper apartments require a common-stair climb. The building's basement bicycle storage and lobby stroller area reduce the need to carry those items upstairs, but everyday apartment access remains part of the walk-up arrangement.
Comparable buildings
- 904 Union Street — A similarly low-rise prewar cooperative with a modestly larger ownership base.
- 240 8th Street — A small cooperative conversion with broad interiors inherited from a former factory.
- 40 Prospect Park West — A larger elevator cooperative with substantial prewar apartment plans and a park-front setting.
More Park Slope buildings
- 445 5th Avenue (The Slope on Fifth), 445 Fifth Avenue — 2025 condominium
- 445 First Street — 1931 co-op
- 45 Plaza Street West — 1941 co-op
- 452 12th Street — 1986 condominium
- 457 First Street, 457 First Street · Park Slope — 1940 co-op
- 459 12th Street — 1916 co-op
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Park Slope.
The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.
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.
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