Washington Heights.

Three structural factors: (1) the housing stock — most buildings predate 1947 and face aging systems with limited reserve funding; (2) high rent-regulated supply, where rent caps constrain owner repair budgets; (3) high tenant density per building, which raises complaint origins. The result is genuinely higher counts per BBL than midtown Manhattan, not a measurement artifact. The class breakdown matters more than the headline number.

It varies dramatically by ownership. Some pre-war elevator buildings on Fort Washington and Cabrini are professionally managed with active capital reserves and low open-violation counts. Others, mostly landlord-owned rent-stabilized stock, carry hundreds of open violations per BBL. The audit shows the specific building's open count and class breakdown — don't infer from the block.

ZIP 10033 (central Washington Heights, around 181st and the A train) tends to carry the highest per-building open-violation counts in our index, followed by 10032 (Audubon Avenue and below). 10040 (north of Dyckman toward Inwood) trends lower thanks to a mix of newer construction and lower density.

A large majority of pre-1974 Washington Heights apartment stock is rent-stabilized through standard 6+ unit rules. Several 421-a and J-51 buildings carry stabilization for the abatement term. The audit's DHCR check shows the building's specific status. Many Washington Heights tenants don't realize they're stabilized — important to verify before signing a lease renewal.

Yes — most Washington Heights buildings predate 1978 and are subject to NYC Local Law 1 lead-paint remediation when a child under 6 is in the unit. Several Washington Heights landlords carry significant open class-C lead-paint violations in our index. If you're moving in with young children, request the most recent lead inspection records as part of the lease process.