140 8th Avenue

The building holds 94 apartments across six stories on a corner lot of 24,000 square feet, with roughly 97,800 square feet of floor area. The plan is organized around courtyards rather than a single lobby axis, which is why the building reads as lower and quieter from Eighth Avenue than its unit count suggests, and why interior apartments get real light instead of an airshaft.

Layouts follow the mid-1930s standard that these buildings were built to rent: entry foyers, defined living and dining rooms, bedrooms off a hall, and closet counts that are generous by prewar standards — a frequent and legitimate selling point in individual apartments here. The Art Deco detail that survives inside varies apartment by apartment, from original tiled bathrooms and arched openings through to full gut renovations, and that variance is the primary driver of price spread within the building. Because the black steel casements are original and character-defining, replacement is a Landmarks matter and not a shareholder decision; ask what the co-op's window policy is and whether a building-wide program has been discussed.

140 8th Avenue of Brooklyn Corp. has operated the building since the 1980 closing. The service model is the district's standard for a large interwar co-op — resident superintendent, elevator service, central laundry, basement storage, and a common room that doubles as a children's playroom and meeting space — with no doorman. The 94-apartment count does not itself establish lower costs than nearby forty- or sixty-unit buildings; compare actual budgets, staffing, debt, reserves and expense allocations.

The capital agenda at a 1936 masonry building is legible and expensive: FISP/Local Law 11 façade cycles, roof and parapet, boiler and riser stack, elevator modernization, and the courtyard and areaway work that a set-back building carries and a streetwall building does not. Steel casement windows are the item that separates this address from its peers — restoring or replacing them under Landmarks review is a significantly different project than a vinyl replacement program three blocks outside the district. Ask management for the current capital plan, the last two FISP filings, the assessment history and the corporation's underlying mortgage terms.

The cooperative's house rules, sublet policy, pet policy and financing standards are not publicly documented in the materials available to us, and this page will not guess at them. Every one of these should be requested in writing from management before an offer is submitted, and the purchase application, current house rules and most recent financial statements should be read together rather than in isolation. As a cooperative, purchases require board approval; confirm the application package and any interview requirement with management. The flip tax is 2% of the purchase price, paid by the seller.

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.

Market read. Most recent trades (2026 to date) cleared a median $895/sf (floor-adjusted) across 2 sales. Floor-adjusted means each sale is restated to a constant mix of floors, so the figure can differ from the plain median of the sales listed above. Median listing discount 0.1% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01071-0004). 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.

The windows are the file to read. Original black steel casements inside a historic district are a Landmarks matter, a thermal-comfort matter and a capital matter all at once. Find out what the co-op's policy is and whether a program is planned or funded.

Obtain the current policy documents. We did not establish pet, sublet and financing terms in the records reviewed. The policy section reports a seller-paid 2% flip tax; request its dated operative schedule along with the other written rules before an offer.

Buy the exposure. Avenue, courtyard and Carroll Street lines behave differently on light and noise. Walk the specific apartment at the hour you care about.

Compare actual carrying costs. For this 94-apartment building, review maintenance, debt, reserves and assessments alongside the superintendent, elevator and laundry costs; compare those figures with specific nearby buildings.

Reconcile original condition with your renovation budget. Surviving Deco detail is part of what you are buying and part of what you may need to work around. Price both.

Lead with the architecture and name the architect. Martyn N. Weinstein's 1936 Art Deco design, the limestone base, the murals and terrazzo in the lobbies, the courtyard setback — this is the rare Park Slope co-op with a genuine architectural headline. Use it.

Photograph the lobbies and the courtyards. They are common elements every buyer walks through and the strongest visual differentiator against competing listings on Seventh and Eighth Avenues.

Have the building's answers ready. Because the available policy documentation is incomplete, the seller who can hand a buyer written confirmation of the pet, sublet, financing and flip-tax rules supports the buyer’s review; timing still depends on the actual transaction.

Comp on exposure and condition, not on building average. A renovated courtyard-facing apartment and an original avenue-facing one are different assets. Anchor to matched 2025-forward comparables.

If you're considering 140 8th Avenue, also evaluate:

• 814 Carroll Street — 1950 co-op on the same block; the postwar alternative at similar scale inside the district
• 225 Lincoln Place — six-story 1923 co-op with a documented flip tax and sublet framework, five blocks north
• 209 Lincoln Place — the ten-story 1928 co-op with its own parking lot; the height-and-view alternative
• 220 Berkeley Place — 1955 postwar co-op inside the same district; the mid-century plan alternative
• 235 Lincoln Place — 1937 co-op of nearly the same vintage at smaller scale
• 40 Prospect Park West — 1942 park-front co-op just outside the district line
• 35 Prospect Park West — 1929 eighteen-story park-front co-op; the tall prewar alternative
• 20 Plaza Street East — 1940 co-op on Grand Army Plaza at comparable unit count
• 420 12th Street (Ansonia Court) — the Ansonia Clock Factory conversion in the 2012 Extension; loft character in Park Slope