- Year built
- 2005
- Type
- Condominium
- Landmark status
- Not an individual landmark; not in a historic district
- NYC Landmarks Preservation Commission and City Planning records, updated February 2026
- Pets
- Pets permitted; species and limits not stated
- Washer/dryer
- Permitted
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 21 Douglass 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
21 Douglass Street is a four-story condominium completed in 2005, with five residences on the Cobble Hill side of the Court Street corridor. Its residential floors are reached by stairs. The building's ownership is divided into individual condominium lots, with a small apartment inventory behind one street entrance.
Layouts range from a top-floor one-bedroom of about 730 square feet to larger two-bedroom homes around 1,500 square feet. Private terraces and balconies connect selected residences to the outdoors. The larger floor plans include broad living areas and ceilings around ten feet high, while the smaller upper home pairs a compact interior with its own terrace. Outdoor space is attached to individual homes.
Pets and in-unit washer/dryer
- Pets
- Pets permitted; species and limits not statedSource: building management's published schedule, as of September 2026
- In-unit washer/dryer
- PermittedSource: building management's published schedule, as of September 2026
Considering an apartment here? Send Corey the listing to confirm the pet and washer/dryer rules for that apartment.
Own an apartment here? Request an apartment-specific pricing review.
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 retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Recent closings at this building, sourced from NYC Department of Finance records. Apartment-level detail (line, condition, asking-price context) verified upon consultation request.
| Date | Unit | Price |
|---|---|---|
| Oct 13, 2026 | 2 | $2,510,000 |
| Dec 8, 2025 | 3 | $1,999,000 |
| Sep 13, 2022 | 4R | $830,000 |
| Jan 4, 2006 | 3 | $763,687.5 |
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-00408-7501; 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.
What would your apartment rent for?
Enter your apartment and I'll send you what it would rent for, from comparable closed leases at 21 Douglass 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.
Keep up with 21 Douglass Street and its market
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What to know if you’re buying
Two of the five apartments have the same owner. That concentration can affect project eligibility with a buyer's lender and the practical balance of decision-making within the association. Voting percentages follow the condominium's governing documents, not the apartment count. Confirm the lender's treatment of the project before relying on an individual mortgage preapproval, and establish how the five interests fund major work on the roof and common structure.
Comparable buildings
- 47 Dean Street: A nearby low-rise condominium from a similar construction period.
- 75 Columbia Street: A small contemporary condominium with a taller form.
- 361 Clinton Street: A low-rise condominium for comparing townhouse-scale ownership in the neighborhood.
- 480 Degraw Street: A newer boutique condominium with a broader apartment inventory.
More Cobble Hill buildings
- 199 Clinton Street — co-op
- 200 Congress Street — 1949 co-op
- 209 Clinton Street — 1900 co-op
- 210 Pacific Street — 2013 condominium
- 214 Clinton Street — 1892 co-op
- 222 Clinton Street — 1847 co-op
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 21 Douglass 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