353 20th Street
353 20th Street, Brooklyn, NY 11215
Park Slope, Brooklyn
BBL 3008867506 · BIN 3428543
- Year built
- 2022
- Type
- Condominium
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 353 20th 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.
353 20th Street is a five-story, five-residence condominium on a 31.75-foot lot on the South Slope block of 20th Street between Fifth and Sixth Avenues. The building was finished in 2022 but not offered as condominiums until 2024, and all five homes closed between November 2025 and March 2026, within seven months of the plan going effective.
All five deeds are recorded. They total $7,960,000, $85,000 above the plan's $7,875,000 offering total, at an average of $1,592,000 per home. A buyer looking at South Slope new construction can use them as closed comparables.
Architecture and residences
The new-building filing (Department of Buildings job 321189101) was submitted in October 2016 and describes a five-story, 50-foot residential building with five dwelling units, about 6,323 square feet of zoning floor area and 8,751 square feet of construction area. Plans were approved in January 2018 and the full permit issued in November 2021, a five-year gap between filing and permit. PLUTO records the building as complete in 2022, with about 6,096 square feet of residential floor area, or roughly 1,220 square feet per home on average.
The condominium declaration, recorded in October 2025, labels the units TH, 2, 3, 4 and PH. The building has one home per floor, with an elevator opening directly into each, behind a brick, panel and glass facade. Listing records give TH as a two-bedroom, two-and-a-half-bath home of 1,446 square feet; units 2, 3 and 4 as three-bedroom, two-bath full-floor homes of 1,199 square feet each; and PH as a two-bedroom, two-bath home of 982 square feet. Private outdoor space includes a garden, balconies and terraces. The offering plan's Schedule A sets the official sizes.
Offering and pricing
Per the offering plan filed with the New York State Attorney General (plan CD240212), the plan was submitted July 19, 2024, accepted December 5, 2024, and declared effective August 26, 2025, with 353 20th Street LLC as sponsor. The record lists five residential units and a current total offering price of $7,875,000; the initial price field is blank. The Attorney General's plan page returned no content when checked for this review, so the amendments were not reviewed. The database records two units sold, a figure it has not updated since the remaining closings.
Recorded sales
ACRIS shows five sponsor deeds:
- Unit 4: $1,675,000, deed dated November 21, 2025, about $1,397 per square foot
- Unit 3: $1,600,000, deed dated December 2, 2025, about $1,334 per square foot
- Unit TH: $1,695,000, deed dated December 19, 2025, about $1,172 per square foot
- Unit 2: $1,550,000, deed dated December 29, 2025, about $1,293 per square foot
- Unit PH: $1,440,000, deed dated March 13, 2026, about $1,466 per square foot
Per-square-foot figures are our arithmetic on the listed sizes. The penthouse has the lowest price because it is the smallest home, at 982 square feet; per square foot it is the highest in the building. Listing records show four of the five closing at their last ask and the penthouse $10,000 below its $1,450,000 ask. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
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 →What would your apartment rent for?
Enter your apartment and I'll send you what it would rent for, from comparable closed leases at 353 20th 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
Resales only. The sponsor has closed every unit. Any purchase now is a resale from an owner, with the condominium's own board in place once the sponsor turns control over.
Use the deeds. At about $1.44 million to $1.70 million, or about $1,170 to $1,470 per square foot, the five recorded sales are the price reference for this building. Compare any ask against them and against the unit's size in Schedule A.
Tax position. No tax abatement was confirmed in this review. Ask for the current tax bill and common charges.
Closing costs. A resale buyer pays the state mansion tax of 1% at $1 million and above. Use the calculators below to run your price.
Comparable buildings
If you're considering 353 20th Street, also look at these South Slope condominiums:
- 248 20th Street — four-residence enlargement of an 1899 house on the same street, plan accepted July 2026
- 179 20th Street — Lumina, an 11-story, 26-residence condominium on Fourth Avenue
- 218 23rd Street — four-story, four-residence Greenwood Heights condominium with 2026 asks of about $1.68 million to $2.25 million
- 249 18th Street — five-story, five-residence condominium with asks of about $2 million to $2.2 million
- 285–287 18th Street — The Woodgreen, six residences in two new three-story buildings
- 205 14th Street — five-residence conversion that sold out between November 2024 and October 2025
More Park Slope buildings
- 350 Butler Street — 2021 condominium
- 350 Sixth Avenue — 1920 condominium
- 352 Sixth Avenue — 1920 condominium
- 353 Sixth Avenue — 1920 condominium
- 357 4th Street — condominium
- 361 Sixth Avenue, 361 Sixth Avenue · Park Slope — 1905 condominium
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Park Slope.
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 353 20th Street?
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646.939.7375 · c.cohen@compass.com