216 Union Street
216 Union Street, Brooklyn, NY 11231
Carroll Gardens, Brooklyn
BBL 3003440020 · BIN 3004522
- Year built
- 1900
- Type
- Condominium
- Landmark
- Landmark or historic district
216 Union Street is a 20-foot-wide house on a 100-foot-deep Carroll Gardens lot that PLUTO dates to 1900 and records with four apartments. It came to market in May 2025 as a whole house at $4,200,000, described in listing records as on the market for the first time in 50 years, and sold for $3,700,000 by a deed dated October 28, 2025.
The buyer, 216 Union LLC, filed a condominium offering plan in July 2026 with a total offering price of $8,350,000, about 2.3 times the purchase price and an average of $2,087,500 for each of the four homes. The plan has not been accepted, and sales have not started.
Architecture and residences
PLUTO records a building 20 feet wide and 48 feet deep on a 2,000-square-foot lot in an R6B district, with 2,700 square feet of floor area across three floors. The Department of Buildings filing describes the building differently, as four stories plus a cellar.
Two jobs cover the work. An interior renovation with no change of use was permitted in January 2026. A second job, permitted September 3, 2026, covers a "proposed alteration to interior of existing 4 story + cellar building," a new bulkhead on the roof and a change of use of the cellar and roof, keeping the four existing dwelling units and the existing floor area. That job requires a new certificate of occupancy. Structural permits for temporary shoring, partial demolition and the bulkhead followed, along with plumbing and new heating and cooling systems.
A roof bulkhead and a change of use at the roof usually point to stair access for a private roof deck, and a change of use in the cellar to living or storage space tied to the lowest home. Confirm both against the plan's floor plans. No design architect, finishes or layouts have been published.
Offering and pricing
Per the offering plan filed with the New York State Attorney General (plan CD260255), the plan was submitted July 16, 2026 by 216 Union LLC as sponsor, as a rehabilitation of an existing building, with four residential units at a total offering price of $8,350,000. As of October 2026 the record shows no acceptance date, so the sponsor cannot yet sign binding contracts.
Measured against PLUTO's 2,700 square feet, the offering total is more than $3,000 per square foot, a figure that only works if the saleable area is larger than PLUTO shows. PLUTO's figure likely leaves out the fourth floor and the cellar, so the saleable area in Schedule A will be the number to use. No asking prices have appeared in listing records.
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.
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Buying here? Condo closing costs with a mortgage typically run 3 to 6% of the price. See NYC co-op and condo closing costs, line by line.
What to know if you’re buying
Wait for acceptance. Until the Attorney General accepts the plan, the sponsor cannot sign purchase contracts or take deposits or reservations, binding or non-binding; an interest list does not secure a unit. After acceptance, read the plan and every amendment.
Square footage. The public records disagree on the number of floors and give a floor area that looks too small for the offering total. Get the Schedule A areas and floor plans before comparing prices.
Certificate of occupancy. The cellar and roof changes need a new certificate. Closings will follow a temporary one; ask about the sign-off schedule.
Small-building economics. A four-unit condominium has no staff. Read the first-year budget and the reserve.
Closing costs. In sponsor sales the buyer customarily pays the New York State transfer tax (0.4%) and the New York City real property transfer tax (1.425% above $500,000), plus the state mansion tax of 1% at $1 million and above. Use the calculators below.
Comparable buildings
If you're considering 216 Union Street, also look at these small Carroll Gardens condominiums:
- 62 4th Place — 1910 townhouse being converted into four condominiums under a $10.01 million plan filed in 2026
- 361 Union Street — 1899 house being converted to two triplex condominiums, plan submitted in 2025
- 564 Henry Street — four-residence brownstone condominium with a garden duplex
- 171 Luquer Street — four-residence conversion with garden, balcony and roof-deck layouts
- 76 1st Place — five-residence prewar townhouse conversion that sold out in 2024–25
- 50 1st Place — five-residence corner brownstone condominium with keyed elevator access
More Carroll Gardens buildings
- 185 Huntington Street — condominium
- 191–193 Luquer Street — condominium
- 210 President Street, 210 President Street · Carroll Gardens — 1900 co-op
- 220 Union Street — 1900 condominium
- 231 President Street — 1920 co-op
- 232 President Street — 1920 co-op
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Carroll Gardens.
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.
Considering a move at 216 Union Street?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
646.939.7375 · c.cohen@compass.com