400 3rd Street
400 3rd Street, between Fifth and Sixth avenues, Park Slope
BBL 3009820024 · BIN 3021078
- Year built
- 1920
- Type
- Cooperative
- Landmark
- No
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A Private Pricing Opinion — what your apartment at 400 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
400 3rd Street is a four-story cooperative on the broad Park Slope block between Fifth and Sixth avenues. Its eight residences occupy a building approximately thirty-seven and a half feet wide on a lot extending about 115 feet deep. The property belongs to the neighborhood's prewar apartment-house stock and sits outside the Park Slope Historic District.
The apartments include three-bedroom, two-bathroom homes with six-room layouts. Prewar interior details include decorative fireplaces and wood floors, and renovated homes accommodate in-unit laundry. Apartments on the upper floors are reached by stairs.
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 | vs. Ask |
|---|---|---|---|---|
| Jul 27, 2026 | 2L | 3 BR · 2 BA | $2,150,000 | +19.8% |
| Aug 31, 2021 | 4L | 3 BR · 2 BA | $1,850,000 | -7.3% |
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-00982-0024) 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.
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.
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What to know if you’re buying
Eight apartments support the cooperative's common roof and masonry. A large repair can therefore carry a meaningful per-apartment allocation even in a building with limited services; the share schedule determines each home's portion.
Comparable buildings
- 240 8th Street — another small prewar cooperative near the Fifth Avenue corridor.
- 904 Union Street — a similarly low-rise cooperative with a modest apartment count.
- 459 12th Street — small-association cooperative ownership farther south in Park Slope.
- The Presidential — a larger cooperative within a comparable prewar low-rise form.
More Park Slope buildings
- 393 Dean Street (Park Slope Manor Condominium) — 2004 condominium
- 396 Third Street — 1940 co-op
- 40 Prospect Park West — 1942 co-op
- 404 3rd Street — co-op
- 409 Third Street — 1921 condominium
- 41 Park Place — condominium
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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