148 21st Street, Brooklyn

A small South Slope walk-up under corporate ownership since 2024, with active construction noise on the surrounding block.

A five-unit walk-up built in 1962 that passed out of a four-decade family ownership chain in 2024 to 148 21st St LLC. While the building's own record stays thin, street-level construction noise and active curb blockage dominate the immediate blocks. Three things to know:

Off-hours construction and heavy equipment shape the surrounding block face. 80 noise calls within three blocks in the last 12 months, led by 34 complaints for off-hours construction work and 28 for heavy site equipment. The calls concentrate on nearby commercial job sites rather than residential tenant disputes.

Hydrant blockages and driveway clearance create persistent street-level curb friction. 202 illegal parking complaints within three blocks over the last year, anchored by 69 hydrant blockages and 51 posted-sign violations. Combined with 61 blocked driveway calls, curb access sees heavy daily turnover.

Quieter signals on this building and the blocks around it:

• 18 dirty condition and 13 unsanitary condition reports logged within three blocks over the last year
• 10 graffiti reports recorded within three blocks in the past 12 months
• 7 encampment and 5 homeless assistance calls logged within the three-block radius over the last year

148 21st Street is a 5-unit building in Brooklyn, New York City (BBL 3006420023). This building is associated with Calderone Anna. Brix tracks 0 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 1962, this walk-up apartment building sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.

The building last changed hands on June 19, 2024, according to recorded deeds.

Brix score: 100/100. View the Building Report on Brix.

See every NYC building owned by Calderone Anna on the landlord portfolio page.