A 2-unit two-family home on the Staten Island record, built in 1980.
423 Hillman Avenue is a 2-unit building in Staten Island, New York City (BBL 5015950167). This building is associated with Muldoon, Diane. Brix tracks 0 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.
Built in 1980, this two-family home sits in Staten Island and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.
The building last changed hands on May 21, 2026, according to recorded deeds.
Brix rating: Clean (100/100). View the full report on Brix.
See every NYC building owned by Muldoon, Diane on the landlord portfolio page.
Part of Castleton Corners — see violations, complaints, and landlord activity across the whole neighborhood.
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