10 Plaza Street East
10 Plaza Street East, Brooklyn, NY 11238
Park Slope, Brooklyn
BBL 3011690001 · BIN 3029306
- Year built
- 1959
- Type
- Cooperative
- Units
- 126
- Floors
- 15
- Landmark
- No
- Pets
- cats and dogs understood to be permitted; conditions not publicly documented
Compiled by The Roebling Research Desk from the building’s offering plan, amendments, and related building documents. Reported and subject to confirmation. Board policies can change by amendment — confirm at the offer stage.
Grand Army Plaza is Brooklyn's ceremonial front door, and the buildings on its rim occupy a piece of ground the borough cannot make more of. The plaza is Olmsted and Vaux's northern entrance to Prospect Park, laid out in the 1860s; John H. Duncan's Soldiers' and Sailors' Memorial Arch went up at its center in the early 1890s; the Central Library's limestone curve closed the eastern edge in 1941. Everything built around the oval since has had to answer to that composition. The prewar rim answered it with ornament — Rosario Candela's cooperative at 39 Plaza Street West and its Jazz Age neighbors on the western arc. The postwar rim answered it with height and glass area, and 10 Plaza Street East is the clearest example on the eastern side: fifteen stories of 1959 brick, built to take the view.
The view is the building's thesis. From the upper floors the outlook runs across the plaza and over Prospect Park in one direction and toward the Downtown Brooklyn skyline in the other — an outlook a four-story brownstone-belt co-op cannot produce, and one the plaza's own geometry protects, because the oval and the park in front of the building are not developable. Brownstoner, covering apartments here, has put it about as plainly as it can be put: the appeal is the views, and it is also the location. What 10 Plaza Street East offers is not prewar detail — there is essentially none — but elevation, light, full-service operation, and a short walk to the 2/3 at Grand Army Plaza, the Saturday greenmarket under the arch, the Brooklyn Botanic Garden, and the park's Long Meadow.
The building's second useful fact is its relationship to the historic-district map, which in this part of Brooklyn is unusually consequential. Park Slope's district is one of the largest in the city — roughly 2,575 buildings across some forty blocks after the 2012 and 2016 extensions — and its rules shape the cost and calendar of every renovation inside the line. 10 Plaza Street East is outside it, and outside the Prospect Heights district across Flatbush Avenue as well, so window replacement, façade work, and any exterior alteration proceed through DOB alone. Against a converted brownstone in the district that is a real and quantifiable difference in the alteration path, one that rarely gets priced explicitly and probably should be.
The third fact is the operating model: an attended lobby, elevators, a central laundry, bike and storage rooms, and parking on site. Nothing on that list is exotic, and none of it is what the brownstone-belt co-op stock has. The neighborhood's converted row houses trade on garden access, floor-through layouts, original detail and party-wall condition; a building like this trades on services, elevation, and predictability. They are different products competing for overlapping buyers, and the honest comparison runs on carrying cost per room rather than on charm.
Architecture and unit composition
The building is a fifteen-story postwar masonry apartment house on the plaza rim — a slab of its moment, without the setbacks, cornices, or terracotta of the prewar buildings on the western arc. Its architectural interest is positional rather than decorative: height and plaza frontage together produce the light and outlook that define the apartments.
Layouts run in the postwar Brooklyn idiom — studios, one-bedrooms, and two-bedroom, two-bath configurations, with L-shaped living rooms that carve out a dining area without giving up the sitting area, parquet floors, and window walls sized for view rather than for period proportion. Line position matters here more than it does in most brownstone-belt co-ops, because exposure determines whether an apartment looks at the park and the plaza, at Downtown Brooklyn, or into the block behind. Nobody buys this building for the plaster.
The unit count is the one number to handle carefully. The Department of Buildings record shows 126 dwelling units; DOF's tax-lot file returns 134. Neither is the share ledger, and in a building of this vintage combinations are common enough that a specific apartment's shares and any prior combination approvals should be verified by your attorney rather than inferred from either source.
Building operations
Plaza Prospect Apartments, Inc. operates the building as a full-service cooperative. The documented service package — attended lobby, elevators, central laundry, bicycle room, resident storage, on-site parking — is the postwar standard and is the principal reason maintenance here runs heavier per room than at a self-managed brownstone conversion. That is the deal: you are buying staff and systems.
For a 1959 masonry building now well past sixty, the recurring capital items are predictable and should be diligenced specifically: FISP/Local Law 11 façade cycles, elevator modernization, roof and parapet work, window replacement, and the boiler and heating distribution plant. Ask for the last two FISP filings, the current reserve position, the assessment history, and the board's capital plan. The corporation's financial statements and the building's assessment record are maintained in The Roebling Research Library and reviewed with clients during diligence; the managing agent of record is not asserted here and should be confirmed with the board.
Recent sales
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Recent transfers at this building, sourced from NYC Department of Finance records. Apartment-level detail (line, condition, asking-price context) verified upon consultation request.
| Date | Unit | Price |
|---|---|---|
| May 22, 2026 | 3A | $1,675,000 |
| Apr 16, 2026 | 16C | $1,550,000 |
| Dec 18, 2025 | 15A | $1,575,000 |
| Jul 16, 2025 | 7B | $855,000 |
| Jun 16, 2025 | 9F | $800,000 |
| May 21, 2025 | 7H | $1,500,000 |
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01169-0001) 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.
What to know if you’re buying
Buy the floor and the exposure. This is a view building. The difference between a park-and-plaza outlook and a rear line is the difference between two different apartments at the same address, and it should be the first filter on your comparables.
Get the board's policies in writing early. Minimum down, sublet rules, pets, and flip tax are not publicly documented here. Ask before you bid; do not discover them at board package stage.
Reconcile the unit count and verify the shares. DOB says 126, DOF says 134. Neither is the share ledger. Have your attorney confirm the specific apartment's share allocation and any combination approvals.
Diligence the capital plan, not just the financials. A 1959 building carries a façade, elevator, roof, and boiler calendar. Ask for the last two FISP filings, the reserve balance, the assessment history, and the board's five-year plan.
Understand that you are outside the historic district. Window and exterior work here does not go through Landmarks — a real cost and calendar advantage over a comparable brownstone-belt co-op, and one worth stating out loud when you are comparing the two.
What to know if you’re selling
Lead with the outlook and the plaza. The park, the arch, the Central Library, the Botanic Garden, the Saturday greenmarket, and the 2/3 station are the daily-life case, and the view from an upper floor is the one thing the surrounding brownstone market cannot answer.
Price per room against the postwar plaza and Eastern Parkway set. The right comparables are the full-service postwar co-ops on the plaza rim and along Eastern Parkway — not the district's brownstone conversions and not new-construction condominiums, which price on a different basis entirely.
Frame the maintenance honestly as a service package. Buyers coming from the brownstone-belt co-op market will read the maintenance line as high until someone explains what it buys. Explain it: staff, elevators, laundry, parking, and a building that runs itself.
Have the building's paperwork ready. Financial statements, reserve position, assessment history, FISP status, and the board's current policies. In a cooperative sale, a clean, complete package is a pricing asset — it shortens diligence and removes the buyer's discount for uncertainty.
Be accurate about geography. The address sits on the Prospect Heights side of the plaza with Park Slope across the oval. Buyers search both; represent the location precisely and let the plaza do the work.
Comparable buildings
If you're considering 10 Plaza Street East, also evaluate:
- 20 Plaza Street East — the immediate neighbor on the same arc; the closest possible comparable on location and format
- 34 Plaza Street East — postwar plaza-rim cooperative peer a few doors along
- 50 Plaza Street East — smaller plaza-rim cooperative; the boutique alternative on the same street
- 39 Plaza Street West — Rosario Candela's Jazz Age cooperative on the western arc; the prewar answer to the same address
- 1 Grand Army Plaza (Richard Meier on Prospect Park) — the contemporary condominium on the plaza; different ownership form, same outlook
- 135 Eastern Parkway (Turner Towers) — large prewar full-service cooperative on the parkway; the scale comparable
- 125 Eastern Parkway (The Theodore Roosevelt) — parkway cooperative peer with a named prewar identity
- 175 Eastern Parkway — full-service parkway cooperative; the direct per-room comparable set
- 35 Prospect Park West — park-frontage cooperative on the Park Slope Gold Coast; the view comparable at a different price tier
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.
Considering a move at 10 Plaza Street East?
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