A 1910s South Williamsburg building with no open code violations, though recent filings point to unannounced renovation work and hallway maintenance calls.
A 23-unit South Williamsburg rental held by 171-173 Realty LLC since 2002. While the building carries no open housing-code violations, the daily complaint log shows an active cluster of unannounced renovation friction and common-area maintenance calls. Three things to know:
Interior work drew lead-dust and off-hours complaints. In April 2026, complaints logged on a single morning flagged interior lead dust alongside mold and pest issues during unit work. That followed two separate filings in February and March 2026 for unpermitted after-hours construction.
Hallway unsanitary reports surfaced this spring. The address has drawn four unsanitary condition reports, including hallway pest sightings in April 2026 alongside earlier complaints for general upkeep. Older calls for leaks, plumbing, and electrical issues were resolved, but common areas show recurring maintenance friction.
Curb enforcement and residential noise dominate the surrounding blocks. Within three blocks, 268 illegal-parking complaints logged over the trailing 12 months — heavily weighted toward hydrants and blocked sidewalks — alongside 149 residential noise calls. Curb activity and sidewalk noise sit close to the lower-floor windows.
Quieter signals on this building and the blocks around it:
171 South 4th Street is a 23-unit building in Brooklyn, New York City (BBL 3024320040). This building is associated with 171-173 Realty LLC. Brix tracks 2 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.
Built in 1914, this walk-up apartment building sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.
Tenants have filed 21 HPD complaints about this building over the last five years, most often about unsanitary condition.
What tenants have called the city about here over the last five years:
The most recent complaint on this building was filed April 13, 2026.
Conditions cited on open violations at this address:
The building last changed hands on April 23, 2002, according to recorded deeds.
Brix score: 50/100. View the Building Report on Brix.
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Unit 15 at 171 South 4th Street has no open violations (5 past violations).
Unit 8 at 171 South 4th Street has no open violations (1 past violation).
Unit 3 at 171 South 4th Street has no open violations (1 past violation).
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