353 Sixth Avenue
353 Sixth Avenue, between Fourth and Fifth streets · Park Slope
BBL 3009867503 · BIN 3021254
- Year built
- 1920
- Type
- Condominium
- Landmark
- No
- Amenities
- Private outdoor areas, central air conditioning and in-home laundry
Every recorded sale at this building, 2005–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $1,725
- Listing discount
- 3.9%
- Recorded sales
- 12
- On record
- 2005–2025
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A Private Pricing Opinion — what your apartment at 353 Sixth 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.
About the building
353 Sixth Avenue belongs to a group of late-nineteenth-century flats designed by Walter M. Coots for developer Louis Bonert. Its four-home condominium filing was accepted in March 2024, followed by the first apartment closings the next year. The conversion places contemporary interiors inside an older Park Slope streetscape with a masonry frontage and projecting architectural detail.
The layout mix includes a lower duplex with private garden space and upper homes with roof decks. Apartments have two- and three-bedroom configurations, with additional office space in some plans. The lower home has a separate outdoor terrace as well as the garden; roof space is allocated to upper residences. Heating and cooling are provided through central air systems, and the homes have their own laundry.
Recent sales
Recent closings 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 |
|---|---|---|---|---|---|
| Feb 18, 2025 | TWO | 3 BR · 2 BA · 1,087 sf | $1,875,000 | $1,725/sf | +0.0% |
| Feb 7, 2025 | PARLOR | 3 BR · 2.5 BA · 2,144 sf | $2,795,000 | $1,304/sf | -5.3% |
| Jan 27, 2025 | 4 | 2 BR · 2 BA · 1,061 sf | $1,985,587 | $1,871/sf | +1.8% |
| Feb 1, 2023 | — | 11 BR · 4 BA · 4,345 sf | $3,650,000 | $840/sf | -3.9% |
| May 10, 2018 | 1 | 2 BR · 800 sf | $878,500 | $1,098/sf | -0.1% |
| Oct 5, 2010 | 3Sponsor Sale | 2 BR · 850 sf | $565,000 | $665/sf | -5.0% |
| Jul 28, 2010 | 1Sponsor Sale | 2 BR · 780 sf | $605,000 | $776/sf | -3.2% |
| May 6, 2010 | 2Sponsor Sale | 2 BR · 750 sf | $519,300 | $692/sf | -5.6% |
Market read. Most recent trades (2025) cleared a median $1,725/sf across 3 sales. Median listing discount 3.9% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
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 3-00986-7503) 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 from recorded condo declarations and offering plans.
At the recent median sale of $1.99M (3 sales since 2024), a buyer putting 25% down would pay about $80,156 to close, or 4.0% of the price.
- Mansion tax: $19,856
- Mortgage recording tax: $28,667
- Title insurance: $8,935
- Attorneys, lender, building fees, reserves and filings: $22,698
Assumes a resale (the seller pays transfer taxes), a $4,500 attorney fee and a mortgage on the rest.
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What to know if you’re buying
Multiple homes have roof access. The allocation of roof decks should distinguish each owner's exclusive area from the condominium's shared roof structure. With four owners funding the building, a roof repair can involve access across more than one private deck and a concentrated assessment.
Comparable buildings
- 220 Park Place — Another very small condominium in an older Prospect Heights building.
- 153 Lincoln Place — A prewar condominium with a larger ownership group and similar low-rise surroundings.
- 64 Seventh Avenue — An avenue condominium with nineteenth-century origins, useful for comparing historic architecture within Park Slope.
More Park Slope buildings
- 35 Prospect Park West — 1929 co-op by Emery Roth
- 350 Butler Street — 2021 condominium
- 352 Sixth Avenue — 1920 condominium
- 357 4th Street — condominium
- 361 Sixth Avenue, 361 Sixth Avenue · Park Slope — 1905 condominium
- 363 Douglass Street — 1910 condominium
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Park Slope.
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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