THE CONDO BOOK PROJECT

Flatiron House Condominium

39 West 23rd Street/ 22 West 24th Street, Manhattan, NY 10010

Overview

Units
44 residential · 5 parking · 43 storage · 1 commercial
Subway
3 min walk to 23 St R W23 St F M, 3 min
Developer
Anbau
Principals
Stephen L. Glascock
Offering price
$62.2 million total

The sponsor of record is 39 West 23rd Street, LLC, represented by Starr Associates LLP. The offering plan runs 620 pages. The sponsor has filed 14 amendments, the latest in June 2026. The nearest other condo plan on file is Madison Square North Condominium, next door.

Plan CD190397 · New · accepted Dec 17, 2021 · AG record ↗

Closings Pro

Homes closed100% of the homes in the plan44 of 44
Closingsfirst and latest recordedSep 29, 2022 – Aug 18, 2026

Sales recorded with the Department of Finance (ACRIS) through Sep 30, 2026: deeds, or transfer tax filings for a building on leased land, of $10,000 or more. A home's first sale since the plan was filed is the sponsor's closing; resales aren't counted. Closing prices are compared with the same home's Schedule A price, as first offered; a deed covering more than one home isn't compared. Amendments often change prices before a home closes, and a deed that includes parking or storage counts its full price. ACRIS records a sale weeks after closing, so recent contracts don't appear yet. Every building's sales.

All 44 closings
HomeRecordedClosing priceSchedule ADifference
7ASep 29, 2022$3,425,000——
18ASep 29, 2022$5,450,000——
6ASep 30, 2022$3,360,000——
18BOct 11, 2022$4,448,650——
5AOct 17, 2022$3,375,000——
8BOct 18, 2022$2,055,000——
4BJan 17, 2023$1,790,000——
14BFeb 8, 2023$2,406,763——
14AFeb 9, 2023$3,900,000——
3BFeb 10, 2023$1,750,000——
15BFeb 10, 2023$2,440,000——
11AFeb 17, 2023$3,525,000——
9BMar 23, 2023$1,950,000——
8AMar 27, 2023$3,390,000——
3AApr 21, 2023$2,995,000——
10BMay 2, 2023$2,100,000——
5BMay 4, 2023$1,850,000——
7BMay 19, 2023$1,883,763——
10AJun 15, 2023$3,500,000——
4AJun 29, 2023$3,350,000——
501Jun 30, 2023$4,200,000——
15AJul 7, 2023$3,925,000——
12BJul 14, 2023$2,360,000——
12AAug 15, 2023$3,795,000——
301Aug 18, 2023$2,330,000——
11BSep 29, 2023$2,260,515——
6BOct 10, 2023$2,056,865——
17BJan 31, 2024$4,025,000——
19AFeb 23, 2024$12,120,000——
16BMar 18, 2024$4,228,967——
16AJul 16, 2024$4,550,000——
17AAug 2, 2024$4,630,000——
21AOct 10, 2024$9,246,113——
PHOct 10, 2024$12,137,813——
9ANov 4, 2024$3,450,000——
24ANov 21, 2024$10,250,000——
PHNFeb 3, 2025$8,500,000——
801Feb 13, 2025$4,290,000——
601Feb 21, 2025$3,950,000——
22AApr 14, 2025$10,100,000——
701Apr 29, 2025$4,473,909——
23AMay 5, 2025$10,819,950——
THAug 8, 2025$6,601,289——
20AAug 18, 2026$9,850,000——

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Every home's recorded closing price against its Schedule A price, with the ACRIS document and the plan page.

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Budget

From our research: The Sponsor's Condo-Creation Fee in NYC · NYC Condo Insurance Costs Are Rising · Condo Supplies Cost per Unit, by Size

Team

Sponsor
39 West 23rd Street, LLC
Developer
Anbau
Principals
Stephen L. Glascock
Tax estimate
Korngold Powers, LLPPrepared the first-year real estate tax projection
Construction lender
Bank OZK$96 million recorded

From our research: Do NYC Developers Rehire the Same Firms?

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