610 Warren Street

The site is a 100-by-100-foot lot; the building runs about 65 feet deep and leaves a 34'-4" rear yard, which is what gives the Garden residences their private outdoor space and the mid-block units their light. Construction is a 24-inch concrete mat foundation carrying a brick-finished structure, glazed in thick double-pane insulated units — a mix of fixed, tilt-and-turn and operable windows on both the front and rear elevations — with stone parapet copings. A cantilevered steel canopy 21'-9" wide and 5 feet deep, drained for storm water and carrying the building's name in bronze on a cement field, marks the entrance.

The stack is legible. The cellar and first floor hold the two Garden duplexes, the lobby and lounge, the amenity rooms, sixteen parking spaces and thirty-two storage areas. Floors two through five carry six apartments per plate — a three-bedroom corner of roughly 1,424 square feet, a pair of one-bedrooms, a two-bedroom of about 1,046 square feet, a mid-size two- or three-bedroom, and one half of a duplex — which resolves to twenty-two distinct residences across the four floors. All seven penthouses occupy space on floors six and seven; five also have enclosed roof-level space and are labeled triplexes in the September 2016 amended Schedule A. That schedule gives penthouse interior areas of approximately 1,083 to 1,806 square feet. Balconies, terraces and Garden yards are separately described in the amended plans; confirm their dimensions and legal rights for the residence being considered.

Mechanically the building is straightforward and modern for its date: a ducted mini-split heat-pump system serving apartments, corridors and amenity spaces, a rooftop unit ventilating the common areas, and in-unit laundry throughout.

Governance is ordinary condominium governance and the cited 2017–18 sales do not alone establish complete sellout or the end of sponsor control; reconcile current sponsor holdings, amendments and board composition. The operating question in a building like this is not complexity — there is one commercial interest, and the amenity spaces are all residential common elements — but cost. Thirty-one residences carrying a lounge, a gym, a playroom, a recreation room, a parking facility, an elevator and a full-time cleaning burden is a lot of overhead per door. Ask for the current budget and reserve balance, and ask specifically what the amenity spaces cost to run.

The recent Department of Buildings record shows two items worth asking about. A heavy-duty sidewalk shed was filed in February 2025, and a repair to the steel framework at the mechanical bulkhead on the roof was filed in July 2025. Neither is unusual for a building at the eight-year mark, and the rooftop bulkhead repair is exactly the kind of item a first Local Law 11 cycle turns up. But a shed and a structural roof repair in the same year are a reasonable prompt to ask how the work was funded, whether an assessment was levied, and where the façade filing cycle currently stands.

The parking is the other operational item to pin down. Sixteen spaces are limited common elements rather than deeded lots, which means their allocation is governed by the declaration and the board rather than by a separate deed you can search. Establish in writing whether a space conveys with the unit you are buying, and on what terms.

601 Baltic Street occupies lot 7502 of the same tax block. It is a separate condominium in every legal respect, and the ACRIS record is unambiguous on the point:

• Separate declarations. 610 Warren's declaration was recorded June 8, 2017; 601 Baltic's was recorded June 13, 2024 — seven years apart.
• Separate condominium numbers. 610 Warren is Brooklyn condominium no. 3971; 601 Baltic is no. 5800.
• Separate sponsors and lenders. 601 Baltic was developed by an unrelated sponsor entity with a different construction lender.
• Separate buildings and certificates of occupancy. 601 Baltic is a ten-story building on its own BIN, built under a 2018 new-building application and completed in 2021, with 22 tax lots — 21 residences and one commercial unit. Its final certificate of occupancy was issued April 2, 2025.
• Different tax treatment. 601 Baltic carries no 421-a exemption; 610 Warren's runs to the mid-2030s.
• No shared instrument of record. A review of every ACRIS document touching either condominium's tax lots found no document that touches both — no reciprocal easement, no shared-facilities agreement, no common declaration, no cross-lot access agreement.

In short: two condominiums on one tax block that share a property line and nothing else on record. The only practical overlap is a physical one — they are neighbours, and light, air and construction noise travel. If a buyer wants absolute certainty on party-wall or lot-line window conditions, that belongs in a title report, not in an assumption.

Ownership form: Condominium. Resales are governed by the declaration and by-laws and the customary board right of first refusal.

Roof Terrace Units: RT-1, RT-2 and RT-3 are sellable units under the First Amendment and may only be purchased by an owner of a residential unit in the condominium. They may only be used as permitted by applicable law.

Parking and storage: Sixteen parking spaces and thirty-two storage areas are limited common elements, not separate tax lots. Allocation and any charge are matters for the declaration and the board.

Pets, subletting, pied-à-terre, LLC and trust purchasers, flip tax: Not established in the plan materials read for this profile. Confirm with the managing agent and against the current governing documents.

Real estate taxes: A fifteen-year 421-a exemption, benefit start 2019, is active on all 34 lots on the FY2027 roll. It steps down in its closing years and ends after the 2032/33 or 2033/34 roll; confirm the final year on the official schedule. Model both the current and the post-abatement carrying cost.

Recent sales

Recent closings 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 $1,547/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 0.0% from the last ask.

Sales sourced from NYC Department of Finance recorded transfers (BBL 3-00401-7501; each condominium apartment is its own tax lot). 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 from recorded condo declarations and offering plans.

Model the post-421-a tax line. The exemption began with the 2018/19 roll and ends after 2032/33 or 2033/34; confirm the final year on the official schedule. Get the current tax bill, read the exemption percentage on it, and run the carrying cost both ways before you decide what the apartment is worth.

Ask about the Roof Terrace Units. Three of them exist, they are separately deeded, and only residential unit owners may buy them. Find out whether one attaches to your unit and who holds the others.

Get the parking in writing. Sixteen spaces, held as limited common elements. Whether one conveys, at what charge, and under whose allocation is a declaration-and-board question, not a deed question.

Ask what the 2025 shed and roof repair were. Scope, cost, funding source, and the current Local Law 11 status. An eight-year-old building filing a shed and a bulkhead steel repair in the same year is worth one direct question.

Price the amenities honestly. A lounge, a gym, a playroom and a recreation room across thirty-one units is real money in the common charge. Decide whether you will use them.

Ignore PLUTO's alteration years. The 1985 and 2000 entries belong to the demolished car-rental building that stood here before 2015.

Be straight about the abatement, and be first. Buyers and their attorneys will find the 421-a schedule. Presenting it yourself, with the roll years and the step-down, converts a discovered surprise into a disclosed fact — and it lets you point out that the exemption still has the better part of a decade to run.

Sell the section. Duplex living with a private yard, a terrace or a roof terrace is the reason a buyer chooses this building over a tower on Fourth Avenue. Photograph the stairs, the outdoor space and the ceiling volume.

Lead with the bedroom count. Sixty-three bedrooms and fifty-four full baths across thirty-one homes is a genuinely family-scaled building, and the market for that on this side of Atlantic Avenue is deep.

Have the amenity and parking answers ready. What conveys, what costs extra, what the board controls. These are the questions that stall deals at contract.

If you're considering 610 Warren Street, also evaluate:

• 450 Warren Street — the ground-up condominium a few blocks west on the same street; the closest direct comparison by address and scale
• 500 4 Avenue — the Fourth Avenue new-construction alternative a short walk south; corridor product against side-street product
• 243 4th Avenue (Parlour) — boutique Fourth Avenue new construction with a similar buyer profile
• 343 4th Avenue (Novo) — the larger Fourth Avenue condominium; more units, more services, a different cost structure
• 509 Pacific Street (The Hendrik) — ground-up new construction with an offering plan of the same 2016 vintage; a close peer on timing and tax position
• 533 Pacific Street (Post House) — the design-led Boerum Hill condominium a few blocks north
• 319 Schermerhorn Street (The Nevins) — new construction with a full amenity package on the Downtown Brooklyn edge
• Sackett Union (291 Union Street) — the 2013 Carroll Gardens–Gowanus condominium; low-rise, family-scaled, an earlier basis
• 480 Degraw Street — boutique ground-up new construction on the Gowanus side; the small-building alternative
• 11 Hoyt Street — the amenity-maximalist tower generation; the opposite end of the same buyer's search