- Year built
- 2011
- Type
- Condominium
- Units
- 10
- Floors
- 5
- Landmark status
- Not an individual landmark; not in a historic district
- NYC Landmarks Preservation Commission and City Planning records, updated February 2026
Every recorded sale at this building, 2005–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2025
- $1,995
- floor-adjusted, 1 sale
- Listing discount
- 0.0%
- Recorded sales
- 19
- On record
- 2005–2025
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 47 Dean 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.
The 421-a benefit ran out this year, and that is the main fact about the building. For eleven years the owners paid tax only on the pre-construction land value. For the past four years their bills rose as the exemption stepped down. The 2026/27 bill is the first at full taxes. Anyone buying now pays the building's true carrying cost. Anyone comparing it with a resale from a year or two ago has to adjust for the tax difference, which in each of the last four years has been a meaningful share of monthly carry.
Otherwise, it is a small, simple building. It has ten apartments, two per floor on five floors, with an elevator, on a mid-block lot zoned R6B, a contextual district that keeps new buildings at rowhouse-block scale. It sits east of Court Street, across Dean Street from 40 Dean Street and a short walk from the Bergen Street loft buildings. The side street is mostly residential, with the Smith Street retail corridor at the end of the block.
Architecture and unit composition
The DOB filing describes a five-story, 51-foot residential building of about 14,500 square feet on a 5,082-square-foot lot. Each floor has an A and a B residence. Because the plan is simple, apartments on the same line are close to identical from floor to floor, and resales compare cleanly. The fifth-floor units sit directly below the common roof deck.
The building has one elevator and is run by its board of managers through a managing agent. Public records show no doorman or resident superintendent. Confirm current staffing and service contracts with the managing agent.
Building operations
Sponsor position. The sponsor sold all ten residences to separate buyers between May and November 2011, per ACRIS. The last sponsor deed was recorded in November 2011. The 2027 Department of Finance roll shows ten separate owners and no sponsor holdings. All lots are classed as residential condominium units, none as condominium rentals.
Governance. The condominium declaration was amended once, in May 2011, per ACRIS. No offering plan, budget or financial statements for this building are on file in The Roebling Research Library. Reserves, common charges, and any history of assessments or construction-defect claims must come from the managing agent. The building is now 15 years old, which is when original roofing, elevator controls and mechanical equipment start to need attention. Ask about all three.
Building staffing and amenities
- Elevator
- YesSource: NYC Department of Buildings elevator records
- Amenities noted
- Roof deckSource: The Roebling Team's building profile
Staffing and amenities as our building profile and recent listing records describe them. A feature not listed is not confirmed absent. Outdoor space, parking and some facilities can belong to particular apartments or to a separate owner; confirm access for the specific apartment.
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 →Recent sales
The reviewed record shows one sale in the 24 months before this September 2026 profile, and a few more earlier; ten units alone do not establish holding periods. Compare this building's 2011 construction, elevator, central air and side-street location with dated sales at brownstone conversions and full-service developments before asserting a price hierarchy. Price resales per square foot against other small post-2005 condominiums nearby, and make sure every comparison is on the same tax basis. The recorded 421-a schedule provided a full exemption of new-construction value through 2021/22, followed by phase-outs through 2025/26; normalize each sale's actual tax position rather than treating all prior benefits as partial.
Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
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.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jun 2, 2025 | 3B | 3 BR · 2 BA · 1,328 sf | $2,650,000 | $1,995/sf | +6.0% |
| Aug 31, 2023 | 5A | 2 BR · 2 BA · 1,004 sf | $1,625,000 | $1,619/sf | +6.3% |
| Mar 20, 2023 | 1B | 1 BR · 2.5 BA · 2,315 sf | $2,365,000 | $1,022/sf | -5.4% |
| Jan 18, 2019 | 3B | 3 BR · 2 BA · 1,328 sf | $1,945,000 | $1,465/sf | -1.9% |
| Jun 29, 2018 | 4A | 3 BR · 2 BA · 1,323 sf | $1,875,000 | $1,417/sf | +0.0% |
| Jul 15, 2016 | 2B | 3 BR · 1,327 sf | $1,850,000 | $1,394/sf | +7.2% |
| Oct 17, 2014 | 3A | 3 BR · 2 BA · 1,323 sf | $1,630,000 | $1,232/sf | +1.9% |
| Nov 7, 2011 | 1BSponsor Sale | 1 BR · 2.5 BA · 2,315 sf | $1,578,287 | $682/sf | — |
Market read. Most recent trades (2025) cleared a median $1,995/sf (floor-adjusted) across 1 sale. 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.
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 3-00187-7501; 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.
What would your apartment rent for?
Enter your apartment and I'll send you what it would rent for, from comparable closed leases at 47 Dean Street and nearby.
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.
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What to know if you’re buying
Underwrite at full taxes. The abatement is gone. Use the current 2026/27 tax bill and ignore any older estimate from marketing or a listing.
Get the rules in writing. Pets, leasing, and any right of first refusal come from the bylaws. None of the documents on file covers them.
Ask about capital items. Ten owners share every repair. Ask for the reserve balance and for recent roof and elevator work. At five stories, the building falls below the Local Law 11 façade-inspection threshold, which covers buildings taller than six stories.
What to know if you’re selling
Lead with the tax position. Buyers who have seen abated comparables will ask. Present the current full-tax bill up front so the buyer's lender and attorney underwrite from real numbers.
Comparable buildings
If you're considering 47 Dean Street, also evaluate:
- The Dean Boerum Condominium (40 Dean Street): small 2002 condominium across the street; its 421-a benefit expired in 2018–19
- The Westcott (25 Bergen Street): 15-unit elevator loft conversion across Boerum Place
- Skytrack Condominium (120 Boerum Place): larger 1983 loft-style condominium across Boerum Place
- 100 Congress Street: six-story 2011 Cobble Hill condominium with a 421-a benefit ending on a similar schedule
- The Atlantic (457 Atlantic Avenue): 21-residence Boerum Hill condominium
- 211 Schermerhorn Street: newer Boerum Hill-edge condominium at full, unabated taxes
- 422 State Street: 20-apartment Boerum Hill elevator co-op; the share-ownership alternative
More Cobble Hill buildings
- 417 Hicks Street — 1878 condominium
- 418 Henry Street, 418 Henry Street · Cobble Hill — 1888 condominium
- 439 Hicks Street (Cobble Hill Towers) — 1876 condominium
- 473 Hicks Street — 2007 condominium
- 481 Henry Street, 481 Henry Street · Cobble Hill — condominium
- 5 River Park (347 Henry Street) — 2017 condominium
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Cobble Hill.
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 47 Dean 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