120 Prospect Park West
120 Prospect Park West, between Seventh and Eighth streets · Park Slope
Park Slope, Brooklyn
BBL 3010890036 · BIN 3025829
- Year built
- 1899
- Type
- Cooperative
- Amenities
- Private outdoor space in selected homes; in-home laundry
- Landmark status
- Not an individual landmark; in the Park Slope Historic District
- NYC Landmarks Preservation Commission records, updated February 2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 120 Prospect Park West 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
120 Prospect Park West is a four-residence cooperative in a house originally designed as a single-family residence. William J. Ryan designed the neo-Italian Renaissance building for Charles Hart in 1899. It stands directly opposite Prospect Park, near the entrance at Seventh Street. Its four-story scale and retained residential detail distinguish it from the larger cooperative buildings along the park's western edge.
The inventory combines floor-through two-bedroom homes with a larger duplex arrangement. Park-facing bay windows bring the treetops into the front rooms, while rear rooms face the block's gardens. Original interior elements include decorative mantels, stained glass and parquet floors. A terrace belongs to the duplex, and a spiral stair connects its levels. Laundry is accommodated within residences; the upper floors are reached by the common staircase.
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 transfers 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 |
|---|---|---|---|---|---|
| Jun 30, 2025 | 2 | 3 BR · 2.5 BA · 2,000 sf | $1,995,000 | $998/sf | +0.0% |
| Mar 8, 2017 | 3 | 2 BR | $1,100,000 | -12.0% | |
| Aug 11, 2016 | 4 | 2 BR | $1,155,000 | -7.6% |
Market read. Most recent trades (2025) cleared a median $998/sf (recorded) across 1 sale.
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01089-0036). 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 on co-ops is not officially recorded, figures shown are approximate.
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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
Four residential interests maintain a historic park-facing house. Window replacement and exterior restoration must follow landmark requirements, and their cost is spread across a small cooperative. The duplex's terrace also introduces a private-use area over the building envelope, so its maintenance allocation deserves particular attention alongside the shares assigned to that larger home.
Comparable buildings
- 86 Prospect Park West: A larger low-rise cooperative on the same park-facing avenue.
- 125 Prospect Park West: A substantially larger prewar cooperative for comparing association scale.
- 459 Twelfth Street: A nearby low-rise cooperative with a broader residential inventory.
More Park Slope buildings
- 118 St. Marks Place — 1899 condominium
- 118 Sterling Place — 1920 condominium
- 12 Lincoln Place — 1918 co-op
- 123 Sixth Avenue — 1880 condominium
- 125 Prospect Park West — 1916 co-op
- 130 Eighth Avenue (814 Carroll Street) — 1950 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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646.939.7375 · c.cohen@compass.com