Some secret test data. Grab an address + plop it into the search form.
address notes
1 West 72nd St, Manhattan The Dakota
121 Central Park West, Manhattan The Dakota, alternate address
529 West 29th St, Manhattan rare case of valid GIS entry, but no taxbill lookup
782 Madison St, Brooklyn another case of valid GIS entry, but no taxbill?
540 State St, Brooklyn valid GIS entry, taxbill entry, but no HPD/DHCR.
10-87 Jackson Ave, Long Island City DHCR active; queens muncipality
67-11 242nd St, Queens condo building (or perhaps a group of buildings) with 140 contacts