A nine-story Windsor Terrace building now marketing for-sale condos was permitted as a rental apartment building in a Mandatory Inclusionary Housing zone — meaning a share of units must remain permanently affordable rentals. The condo subdivision was completed June 5, 2026. Prospective buyers may not be getting the full picture.

A nine-story residential building now selling units at 23 Ocean Parkway in Windsor Terrace was permitted and constructed as a rental apartment building in a Mandatory Inclusionary Housing zone, according to New York City Department of Buildings records — a designation that requires a permanent share of units to remain affordable rentals regardless of what happens to the rest of the building.

The property, at Brooklyn BBL 3053220004 near the Prospect Park entrance at Sherman Street, carries a DOB MIH (Mandatory Inclusionary Housing) area flag on its building profile. A permit approved May 31, 2022 — and renewed as recently as July 22, 2025 — describes the project as "a new 9 story (R-2) residential building," listing owner Abraham Leifer and his firm Aview Equities. The Department of Finance still classifies the parent tax lot as D1, elevator apartment, not condominium.

On March 20, 2026, the entity now holding the property, 57 Caton Partners LLC, filed with DOB to "subdivide existing tax lot into ninety-nine (99) condo tax lots." That filing — DOB job No. 322124241 — was marked completed June 5. Units went on sale shortly after.

A prospective buyer who toured the building and posted last week to r/NYCapartments reported being told during the visit that roughly 30 units would be set aside as affordable housing rentals — information, the poster wrote, that appeared nowhere on the developer's website or in any press releases. The poster said they found a building declaration describing the structure as a rental.

The exact number of affordable units and their income targeting could not be confirmed independently before publication; the developer did not respond to a request for comment. MIH obligations run with the land: a developer may sell market-rate units as condominiums, but the affordable units must stay permanently affordable rentals. They cannot be sold or converted.

For a buyer purchasing at 23 Ocean Parkway, that means moving into a condominium building where a portion of neighbors are permanent renters under an affordability restriction that predates the condo subdivision by years. A housing attorney reviewing the condo declaration here would want to see exactly how that obligation is structured — and whether it's disclosed upfront in the offering plan, as state law requires.

The most recent construction permit, renewed last July, expired June 29 of this year.