223 Frost Street
223 Frost Street, Brooklyn, NY 11211
Williamsburg, Brooklyn
BBL 3028577510 · BIN 3070014
Every recorded sale at this building, 2026–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2026 to date
- $1,458
- 7 sales
- Listing discount
- 0.0%
- Recorded sales
- 8
- On record
- 2026–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at Alura 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.
223 Frost Street is a three-story, two-family house that a sponsor gutted, extended and topped with a fourth story and penthouse to create seven condominium homes. All seven sold in 2026. ACRIS shows sponsor deeds from January 21 to July 17, 2026, at $895,000 to $2,250,000, for $8,399,000 in total. That is 95% of the plan's $8,845,000 offering price. Any purchase now is a resale.
Next door, 221 Frost Street, The Elara, is a separate ten-residence condominium under its own plan and sponsor entity. The Department of Buildings filings for both buildings list the same architect of record, ADB Associates, and the same owner company, Brooklyn AZ Inc.
Architecture and residences
The Department of Buildings filing, first filed in April 2022 and permitted in July 2023, converts an existing three-story, 30-foot building with two apartments into a four-story building with a penthouse, 44 feet tall, with seven dwelling units and partial demolition throughout. The city classifies the job as a new building with existing elements to remain, so part of the old structure survives inside the new one. The condominium declaration was dated August 2025, and the tax lots were split into lots 1401 to 1407.
The mix is one garden home and three pairs of front and rear homes. Listing records show a garden residence of about 2,176 square feet, described as three bedrooms in some records and two in others, one-bedrooms of about 614 to 635 square feet on the second floor, one-bedrooms on the third, and two-bedroom penthouses, one of them about 850 square feet. Listing records showed common charges of $266 to $272 a month on the one-bedrooms and $827 on the garden home. It is a walk-up; one listing record's mention of a doorman is not supported elsewhere.
Sales history
Per the offering plan filed with the New York State Attorney General (plan CD240231), the plan was submitted August 6, 2024, accepted February 10, 2025 and declared effective August 14, 2025, with 223 Frost St LLC as sponsor. It covers seven residential units at a total offering price of $8,845,000. The Attorney General's plan detail page returned an empty response when we checked in October 2026, so the amendments were not reviewed. The database extract still counts two units sold.
Sponsor deeds recorded in ACRIS:
- 2F: $895,000, deed dated January 21, 2026 (about $1,409 a square foot on 635 square feet)
- 3F: $910,000, deed dated January 21, 2026
- Garden: $2,250,000, deed dated January 23, 2026 (about $1,034 a square foot on 2,176 square feet)
- PH-R: $1,250,000, deed dated January 27, 2026
- PH-F: $1,299,000, deed dated February 2, 2026
- 2R: $895,000, deed dated May 26, 2026 (about $1,458 a square foot on 614 square feet; listed at $900,000)
- 3R: $900,000, deed dated July 17, 2026
One listing record reports PH-F, about 850 square feet, closing on February 2, 2026 at $1,250,000. ACRIS shows $1,299,000 for PH-F on that date and $1,250,000 for PH-R on January 27. We have followed ACRIS. Square footage comes from listing records. 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 →Recent sales
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 |
|---|---|---|---|---|---|
| Jul 17, 2026 | 3R | 1 BR · 1 BA · 675 sf | $900,000 | $1,333/sf | +0.0% |
| May 26, 2026 | 2R | 1 BR · 1 BA · 614 sf | $895,000 | $1,458/sf | -0.6% |
| Feb 2, 2026 | 4F | 850 sf | $1,299,000 | $1,528/sf | — |
| Feb 2, 2026 | PHF | 2 BR · 1 BA · 850 sf | $1,250,000 | $1,471/sf | +0.0% |
| Jan 27, 2026 | 4R | 851 sf | $1,250,000 | $1,469/sf | — |
| Jan 23, 2026 | 1 | 2,176 sf | $2,250,000 | $1,034/sf | — |
| Jan 21, 2026 | 2F | 1 BR · 1 BA · 635 sf | $895,000 | $1,409/sf | +0.0% |
Market read. Most recent trades (2026 to date) cleared a median $1,458/sf (recorded) across 7 sales. Median listing discount 0.0% from the last ask.
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 3-02857-7510; 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 Alura and nearby.
At the recent median sale of $1.25M (7 sales in the past 24 months, since October 31, 2024), a buyer putting 25% down would pay about $54,909 to close, or 4.4% of the price.
- Mansion tax: $12,500
- Mortgage recording tax: $18,047
- Title insurance: $5,625
- Attorneys, lender, building fees, reserves and filings: $18,738
Assumes a resale (the seller pays transfer taxes), a $4,500 attorney fee and a mortgage on the rest.
Keep up with Alura and its market
The Roebling Report, monthly: Manhattan sales data and analysis, including buildings like Alura. 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
Certificate of occupancy. The Department of Buildings issued a certificate of occupancy for seven dwelling units on December 17, 2025 and renewed it without change on May 14, 2026. A renewal is the pattern of a temporary certificate. Ask when the final certificate of occupancy is expected and what work remains open.
Front and rear lines. The one-bedrooms sold within $15,000 of each other. On a resale, compare front and rear exposure and the floor rather than the asking price alone.
Closing costs. On a resale the seller customarily pays the transfer taxes; the buyer pays the state mansion tax of 1% at $1 million and above, and 1.25% from $2 million. Use the calculators below to run your price.
Taxes. No tax abatement has been confirmed, and individual unit tax bills are new. Confirm the current bill with the Department of Finance.
A seven-unit condominium. With seven owners and no staff, each vote and each repair carries more weight than in a larger building.
Comparable buildings
If you're considering 223 Frost Street, also look at these East Williamsburg condominiums:
- 221 Frost Street — The Elara, the ten-residence condominium next door, a separate plan with the same architect of record
- 218 Frost Street — eight-residence condominium across the street completed in 2016, with a 421-a benefit
- 226 Richardson Street — Luxe 226, ten residences converted and enlarged from a commercial building on the same block
- 33 Frost Street — eight-residence condominium with keyed elevator access
- 1196 Metropolitan Avenue — six loft condominiums in a converted East Williamsburg building, sold through in 2024 and 2025
More Williamsburg buildings
- 220 North 6th Street — condominium
- 221 Frost Street — 2025 condominium
- 221 Middleton Street — 2025 condominium
- 229 Withers Street (Ora) — 2019 condominium
- 232 Lee Avenue — 2007 condominium
- 232 South 2nd Street — 2023 condominium
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Williamsburg.
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 Alura?
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