129 Malcolm X Boulevard

Alexallen Studio Architects filed the alteration in September 2022. The Department of Buildings approved it in October 2022 and issued the permit in November 2023. The filing converts the building from a day-care center and four-family use to a four-family residence only. It adds a new stair bulkhead and replaces partitions, finishes and cabinetry. The construction floor area is about 5,890 square feet, and PLUTO carries 4,680 square feet of building area. The alteration requires a new certificate of occupancy; we did not find one issued in the records reviewed. The four condominium tax lots were approved in March 2026.

Listing records describe Unit 1 (marketed as the garden unit) as a one-bedroom, two-bath of about 1,439 square feet, which likely includes lower-level space. Unit 2 is a floor-through two-bedroom, two-bath of about 1,037 square feet with a home office and a 79-square-foot basement storage room. Unit 3 is a two-bedroom, two-bath of about 1,163 square feet. Unit 4 is a three-bedroom, two-bath penthouse of about 1,170 square feet with a private roof terrace reached by an internal stair and a 134-square-foot basement storage room. Unit 1 has about 369 square feet of private outdoor space. The sponsor's listings describe new electrical, plumbing, water main and sprinkler systems, in-unit vented laundry and European tilt-and-turn windows. Listing records show common charges of about $520 to $535 a month on the lower homes and $613 on the penthouse. Some listing records describe the building as postwar and others as a turn-of-the-century brownstone; PLUTO gives 1931.

Per the offering plan filed with the New York State Attorney General (plan CD240096), the plan was submitted March 27, 2024, accepted October 11, 2024 and declared effective November 18, 2025, with Atelier Malcolm X LLC as sponsor. It covers four residential units. The initial total offering price was $4,498,000; the current total is $4,893,000. The database still shows one unit sold. We could not open the amendment record, so the amendments were not reviewed.

Recorded sponsor deeds (ACRIS):

• Unit 2: $868,000, deed dated May 21, 2026, or about $837 per square foot on 1,037 square feet. Listing records show it asked at $999,000 from June 2025.
• Unit 3: $950,000, deed dated May 28, 2026, or about $817 per square foot on 1,163 square feet. Listing records show it first asked at $1,084,000 and later at $999,000.
• Unit 1: $815,000, deed dated September 10, 2026. Earlier asks were $1,095,000, then $899,000 in March 2026 and $849,000 from May 2026.

The plan total does not reconcile with the recorded prices. The three deeds total $2,633,000. Reaching $4,893,000 would require about $2.26 million for the penthouse. Listing records show the penthouse offered at $1,550,000 in August 2025, then $1,399,000 in September 2025, $1,299,000 in March 2026 and $1,250,000 from June 2026, about $1,068 per square foot on 1,170 square feet, with common charges of $613 a month and taxes of $5,388 a year. Prices appear to have come down from the plan schedule, which the amendments may record. As of October 2026 we found no deed for Unit 4.

Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.

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.

Market read. Most recent trades (2026 to date) cleared a median $827/sf (recorded) across 4 sales.

Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01632-7501; 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.

Use the deeds, not the plan total. The recorded sales show where this building actually trades: $815,000 to $950,000 for the lower three homes.

Certificate of occupancy. The conversion changed the building's legal use. Ask for the new certificate of occupancy, temporary or final, before closing.

Prewar shell, new systems. Ask the sponsor which systems were replaced: roof, windows, heating, electrical and plumbing risers. Ask too what the plan's engineer's report says about the 1931 structure.

Closing costs. In sponsor sales the buyer customarily pays the New York State transfer tax (0.4%) and the New York City real property transfer tax (1.425% above $500,000). Most homes here fall below the $1 million mansion-tax threshold.

• 194 Bainbridge Street: 42-residence condominium in the Stuyvesant Heights historic district, asking from about $695,000
• 386 Kosciuszko Street: The Brick Lofts, seven residences, in sponsor sales from about $600,000
• 56 Quincy Street: four-residence new construction with sponsor deeds of $1.86 million to $2.21 million
• 253 Gates Avenue: Maison Hill, a house being enlarged into four condominiums
• 393 Greene Avenue: planned five-residence condominium built over a 1901 building
• 178 Throop Avenue: seven-residence condominium with a 2026 certificate of occupancy