177 Union Street
177 Union Street, between Hicks and Henry streets · Carroll Gardens
BBL 3003377501 · BIN 3392397
- Year built
- 2007
- Type
- Condominium
- Landmark
- No
- Amenities
- Private terraces in selected homes, central air conditioning, in-home laundry and fireplaces
Every recorded sale at this building, 2006–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $1,829
- Listing discount
- 4.2%
- Recorded sales
- 13
- On record
- 2006–2025
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 177 Union Street would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.
About the building
177 Union Street is a 20-foot-wide condominium near Henry Street, designed by Henry Radusky. The Attorney General accepted the new-construction offering in January 2008 under sponsor 177 Union Street Condos LLC. Its four residences occupy a low-rise building within the western part of Carroll Gardens, close to the neighborhood's traditional rowhouse blocks.
The upper homes include two-bedroom, two-bath layouts of roughly 1,150 to 1,200 square feet. A larger duplex at the base extends to approximately 2,125 square feet across two levels. Terraces add outdoor space to selected homes, while fireplaces, central cooling and in-home laundry are part of the interior equipment. The duplex has substantially more internal circulation than the single-level apartments above it.
Recent sales
Recent closings at this building, curated by The Roebling Team research desk. 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.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Dec 29, 2025 | 3 | 2 BR · 2 BA · 1,148 sf | $2,100,000 | $1,829/sf | off-mkt |
| Aug 14, 2024 | 2 | 2 BR · 2 BA · 1,200 sf | $1,910,000 | $1,592/sf | -4.5% |
| Apr 1, 2021 | 1 | 4 BR · 3 BA · 2,124 sf | $2,375,000 | $1,118/sf | -10.4% |
| Jul 31, 2018 | 4 | 3 BR · 2 BA · 1,200 sf | $1,750,000 | $1,458/sf | +3.2% |
| Jan 24, 2018 | 1 | 2 BR · 2.5 BA · 2,126 sf | $2,155,000 | $1,014/sf | -4.2% |
| Sep 8, 2015 | 3 | 2 BR · 2 BA · 1,200 sf | $1,650,000 | $1,375/sf | +0.1% |
| Jan 5, 2015 | 2 | 2 BR · 2 BA · 1,178 sf | $1,300,000 | $1,104/sf | off-mkt |
| Aug 4, 2014 | 1 | 2 BR · 2.5 BA · 2,126 sf | $1,800,000 | $847/sf | -2.7% |
Market read. Most recent trades (2025) cleared a median $1,829/sf across 1 sale. Median listing discount 4.2% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-00337-7501) 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; square footage from recorded condo declarations and offering plans.
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.
Keep up with 177 Union Street and its market
The Roebling Report, monthly: Manhattan sales data and analysis, including buildings like177 Union Street. Unsubscribe anytime.
We’ll use your email for The Roebling Report and note your interest in this building. See our privacy policy.
What to know if you’re buying
Roof rights were revised during the original offering. The Attorney General's filing history identifies changes to layouts and roof rights in 2008. For a home sold with roof access, match that access to the final condominium allocation, including maintenance responsibilities. Four residential interests share the association's expenses, and a lender may require additional project review for a condominium this small.
Comparable buildings
- 75 Columbia Street: A nearby condominium from a similar development era with a taller form.
- 47 Dean Street: Another low-rise condominium with a somewhat larger association.
- 361 Clinton Street: A low-rise condominium for comparing townhouse-scale ownership.
- 145 President Street: A newer local condominium with a larger inventory and broader service structure.
More Carroll Gardens buildings
- 145 President Street — 2017 condominium by SLCE Architects
- 154 Nelson Street — 1900 condominium
- 171 Luquer Street — 1900 condominium
- 185 Huntington Street — condominium
- 191–193 Luquer Street — condominium
- 210 President Street, 210 President Street · Carroll Gardens — 1900 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 177 Union Street?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.