220 Union Street
220 Union Street, Brooklyn, NY 11231
Carroll Gardens, Brooklyn
BBL 3003440022 · BIN 3004524
- Year built
- 1900
- Type
- Condominium
- Landmark
- No
220 Union Street is a 20-foot-wide, 1900 house on a 100-foot-deep lot in Carroll Gardens, recorded by the city as a four-family building with about 3,300 square feet. The sponsor bought it for $4,200,000 in a deed dated February 27, 2026, per ACRIS, and is converting it into four condominiums.
The plan as submitted prices the four homes at a combined $9,150,000, or $2,287,500 each on average. That is about $2,770 per square foot of PLUTO's recorded floor area, a figure that would sit far above Carroll Gardens condominium resales if PLUTO's area were the sellable area. It likely is not. The Department of Buildings filing gives about 5,600 square feet of construction area, which includes the cellar and new roof space; Schedule A of the plan will show the sellable square footage, and that is the number to price against.
Architecture and residences
The alteration job was filed in December 2025 and permitted June 18, 2026, at an estimated cost of $722,000. It describes alterations to the existing four-story-plus-cellar building, including a new roof bulkhead and a change of use for the cellar and the roof, and requires a new certificate of occupancy. The unit count stays at four. A related plumbing filing covers new domestic water, sanitary and gas service, permitted in May 2026.
The change of use at the cellar and roof suggests that cellar space will be joined to the lowest home and the roof made usable, likely as a terrace for the top home. Neither is confirmed until the plan is accepted. Layouts, sizes and finishes have not been published.
Offering and pricing
Per the New York State Attorney General's database, 220 Union LLC submitted plan CD260290 on August 10, 2026, as a rehabilitation condominium of four residential units with no commercial or storage units, at a total offering price of $9,150,000. The record shows no acceptance date and no amendments as of October 2026.
No asking prices for individual homes were found in public listing records as of October 2026.
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.
See full Local Law 97 analysis →Be first to know when 220 Union Street launches
There are no sponsor sales yet. Register below and we’ll reach out the moment pricing and the offering plan are released — before the building is on the open market.
We’ll use your email to reach out about this building and closely related inventory, and to send The Roebling Report. See our privacy policy.
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
The plan is not yet accepted. Until the Attorney General accepts the plan, the sponsor cannot sign purchase contracts or take deposits. It can take only non-binding expressions of interest.
Buying before completion. Work permits issued in mid-2026, and the building needs a new certificate of occupancy. Ask for the schedule and what happens to your deposit if delivery slips.
Square footage. PLUTO's 3,300 square feet and the 5,600-square-foot construction area differ widely. Price each home on the plan's Schedule A and confirm what is cellar or roof space.
A four-owner condominium. Four owners share every building decision. Read the by-laws on repairs, insurance, the garden and the roof.
Tax class. Small condominiums may be assessed differently from larger buildings. Ask which tax class the plan's projection assumes.
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 mansion tax of 1.25% between $2 million and $3 million. Use the calculators below to run your price.
Comparable buildings
If you're considering 220 Union Street, also look at these Carroll Gardens condominiums:
- 541 Henry Street — four-residence condominium on the same block, with a garden duplex and a roof deck
- 361 Union Street — 1899 house being converted into two triplex condominiums
- 62 4th Place — 1910 townhouse being converted into four condominiums under a $10.01 million plan
- 364 Union Street — five-residence brownstone condominium with a garden duplex
- 351 Union Street — two-residence condominium created by a full townhouse renovation
More Carroll Gardens buildings
- 191–193 Luquer Street — condominium
- 210 President Street, 210 President Street · Carroll Gardens — 1900 co-op
- 216 Union Street — 1900 condominium
- 231 President Street — 1920 co-op
- 232 President Street — 1920 co-op
- 233 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 220 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