THE CONDO BOOK PROJECT

833 Knickerbocker Avenue Condominium

833 Knickerbocker Avenue, Brooklyn, NY 11237

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Overview

Units
10 residential · 1 parking · 1 commercial
Subway
5 min walk to Halsey St LWilson Av L, 7 min
Principals
Oren Hakim, Maurice Nassiri
Average $/sf
$1,094Homes in Schedule A, as first offered
Common charges
$260–$607 a monthSponsor's first-year estimate in Schedule A, January 1, 2026 to December 31, 2026
Offering price
$9.48 million total

The sponsor of record is 831 On LLC, represented by Eial Girtz, PC. The offering plan runs 321 pages. The sponsor has filed 1 amendment, the latest in April 2026. The nearest other condo plan on file is 301 Covert Street Condominium, next door.

Plan CD250038 · New · accepted Dec 23, 2025 · AG record ↗

Compare

FigureThis building1Stanhope Foundry210 units · 0.9 miaccepted 202532 Schaefer38 units · 0.6 miaccepted 2026
Common ChargesPer Square Foot / Month$0.51Lowest$0.81$0.67
Average Offering PricePer Apartment$825,060Above peers$786,000$737,522
Average PricePer Square Foot$1,094Below peers$1,135$1,110
Property TaxesPer Square Foot / Month$0.53In line$0.49$1.20
Average Unit SizeSquare Feet754 SFLarger692 SF664 SF

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Unit mix, closings, budgets, finishes and the team, against Stanhope Foundry and 32 Schaefer, cited to the offering plans. No credit card required.

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How We Got This
  • Comps: the closest Brooklyn plans on size, $/SF and launch date, within 2 miles when possible.
  • Figures: each building's own offering plan, filed with the NY Attorney General. Nothing is estimated.
  • Checked: a price list publishes only when its math adds up, and building pages cite the plan pages.
  • Labels: In line is between the comps; Below/Above peers is past both by up to 15%; Lowest/Highest by more.

Closings Pro

Homes closed0% of the homes in Schedule A0 of 10

Sales recorded with the Department of Finance (ACRIS) through May 31, 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.

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Closings are for subscribers

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
831 On LLC
Principals
Oren Hakim, Maurice Nassiri
Tax estimate
MGNY Consulting Corp.Prepared the first-year real estate tax projection
Construction lender
Bullpath Capital$2.6 million loan stated in the plan

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

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