34 Plaza Street East
34 Plaza Street East, Brooklyn, NY 11238
Prospect Heights, Brooklyn
BBL 3011700009 · BIN 3029314
- Year built
- 1956
- Type
- Cooperative
- Units
- 111
- Floors
- 12
- Landmark
- No
The buildings on the Grand Army Plaza rim are usually described by their height. This one is better described by its plan. It presents about forty-three feet to Plaza Street East and runs roughly a hundred and thirty-nine feet back from it — a slab set perpendicular to the oval rather than laid along it. The consequence is that most of the apartment stock takes its light and its outlook off the long side elevations and the rear, not off the plaza. A minority of lines look directly onto the oval and the park beyond; the rest look across the block, over the low roofs of the Sterling Place row houses behind. That distinction is the single most important thing to understand about the building before you make an offer, and it is invisible from the street.
The second fact worth knowing is bulk. The lot is zoned R8X, which permits roughly 6.02 FAR. The building carries about 8.18. It is a legally non-conforming envelope — one that could not be replicated on the site today — and it is the reason 111 apartments and about 120,000 square feet fit on a lot of under 15,000 square feet. Where a neighboring cooperative might be sitting on unused development rights, this one is sitting on the opposite condition, and it changes the conversation about the corporation's balance sheet. There is no air-rights story here. There is a large, dense, efficiently used building that produces about 1,080 gross square feet per apartment and spreads its fixed costs across a wide share base.
The land underneath has a specific history. This tax block was part of the ground the City took for Prospect Park in the 1860s and then released for sale under an act of the State Legislature passed April 23, 1870 and amended June 18, 1873; the surveyor's map of the Prospect Park lands was filed with the Kings County Register in December 1881, and the title descriptions on the block still run back to it. The row houses on Sterling Place went up in the 1880s on those released lots. The apartment houses on the plaza rim came later, in a sequence that ran from the 1920s through the 1950s and stopped. 34 Plaza Street East belongs to the last phase of that sequence.
The building has been shareholder-governed for forty-two years. The deed from 34 Plaza St Company to 34 Plaza Owners Corp. was recorded on July 5, 1984, in the same twelve-month window that took the 1925 building next door and the 1926 building on Eastern Parkway cooperative. What that means practically is a long self-generated financial record, a board that has run every major capital cycle at least once, and no sponsor overhang worth worrying about. It also means the conversion-era paperwork is forty years stale, and the operative documents are the current house rules, the current proprietary lease as amended, and the last three years of financial statements.
Architecture and unit composition
Twelve stories of brick over a lot of 14,673 square feet, with roughly 116,000 square feet of residential area and about 4,000 square feet of commercial area on the Department of Finance rolls. The commercial component is worth flagging early: eight non-residential units sit on the tax roll alongside the 111 apartments, and non-residential income in a residential cooperative cuts two ways. It cushions the maintenance line, and it complicates the corporation's tax posture and, occasionally, a shareholder's financing. Ask the managing agent what share of the budget the commercial space carries and whether the corporation has ever had to manage an 80/20 income question.
Apartment plans here are mid-century rather than prewar: fewer defined foyers and service passages than a 1920s building on Eastern Parkway, more efficient kitchens, and a room-count convention that will read differently against the prewar stock across the plaza. The average of about 1,080 gross square feet per apartment sits between the boutique prewar buildings on the arc, which run much larger per unit, and the smaller-unit postwar stock elsewhere in the neighborhood. Within the building the spread is driven by line, floor and renovation state, and — more than in most buildings — by which direction the apartment faces.
Because the property is outside every historic district in the area, exterior alterations here go through the Department of Buildings alone. Window replacement, façade repair and any ironwork are board-and-DOB questions, not Landmarks questions. Against a converted brownstone inside the Park Slope or Prospect Heights district lines, that is a real difference in both cost and calendar, and it is one of the few places where an unlandmarked postwar building has a defensible advantage.
Building operations
A twelve-story, 111-apartment cooperative is a full-service operating business. The recurring capital items to review are the elevators, the roof, the heating plant, the Local Law 11 façade cycle on a 1956 masonry envelope, and — in a building of this age — the risers and the electrical service, since mid-century apartment houses were designed for a fraction of today's electrical load. Ask for the last two façade filings, the elevator modernization history, the assessment history and the reserve balance.
The cooperative's Department of Housing Preservation and Development registration names Orsid New York as managing agent, current for the 2025–26 registration cycle. Staffing levels, service contracts and the doorman schedule should be confirmed with management rather than assumed from the building's size.
The underlying mortgage matters here in a different way than it does in a small corporation. Spread across 111 apartments, debt service per share is diluted, but a refinancing at an unfavorable moment still moves the maintenance for everyone. Get the balance, the rate and the maturity date in writing, and ask when the board last went to market.
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 4, 2026 | 1201 | $750,000 |
| Jan 30, 2026 | 601 | $585,000 |
| Sep 22, 2025 | 505 | $700,000 |
| Jul 15, 2025 | 807 | $1,600,000 |
| Mar 14, 2025 | 1001 | $550,000 |
| Mar 14, 2025 | 1202 | $860,000 |
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01170-0009) 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
Confirm the exposure before anything else. The building runs back from the plaza rather than along it. Plaza-facing and block-facing apartments are different products at the same address. Visit at two times of day.
Ask what the commercial space contributes. Roughly 4,000 square feet of non-residential area sits on the tax roll. Find out what it earns, who occupies it, and whether it has ever raised an income-source question for the corporation.
Get the flip tax and sublet policy in writing early. Neither is documented in the public record. Both are material to your exit.
Understand the bulk position. The building is over-built against current R8X zoning. There is no unused-development-rights upside here, and that is worth knowing before someone tells you otherwise.
Read the capital plan on a seventy-year-old building. Elevators, roof, façade cycle, heating plant and electrical service. Ask for the reserve balance and the assessment history alongside the financials.
What to know if you’re selling
Lead with the address and the arithmetic. Grand Army Plaza, twelve stories, 111 apartments, no Landmarks review on exterior work, and a maintenance line spread across an unusually wide share base. Those are the building's arguments and they are all verifiable.
Photograph the outlook honestly. If the apartment faces the plaza, that is the listing. If it does not, sell the light, the quiet and the room count instead — buyers find out either way at the first showing.
Position against the plaza rim and the parkway co-ops, not against the condominium tier. Contemporary condominium pricing in Prospect Heights will not support a mid-century cooperative ask, and an appraiser will not accept it.
Have the board package ready before the first offer. Current financials, reserve balance, assessment history, house rules, sublet policy, flip tax and the alteration approvals for any work done to the unit. Sellers who assemble it in advance keep it from becoming a negotiating lever.
Comparable buildings
If you're considering 34 Plaza Street East, also evaluate:
- 50 Plaza Street East — the 1925 twelve-story cooperative on the same tax block; the closest direct comparison on the arc
- 20 Plaza Street East — the 1940 six-story cooperative that holds the curve of the plaza; the prewar alternative at low rise
- 10 Plaza Street East — the 1959 fifteen-story cooperative on the next block; the other postwar building on the rim
- 41 Eastern Parkway — the parkway's twelve-story prewar co-op, for buyers who want scale in a 1920s building
- 135 Eastern Parkway (Turner Towers) — the neighborhood's largest prewar cooperative
- 175 Eastern Parkway — 1920s parkway co-op at the Brooklyn Museum end, with an unusually wide apartment range
- 39 Plaza Street West — the Rosario Candela cooperative on the western arc; the plaza's prewar benchmark
- 230 Park Place — the Art Deco elevator co-op inside the Prospect Heights Historic District; the landmarked comparison
- 44 Butler Place (Butler Plaza) — the condominium alternative one block east, for buyers weighing tenure
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 34 Plaza Street East?
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