HPD Housing Maintenance Code violations for one building (dataset wvxf-dwi5). Give the house number, street, and borough. Returns a server-side per-class count summary (class A non-hazardous, B hazardous, C immediately hazardous, I informational) plus the most recent matching violations. Street is matched as an uppercase substring; house number is matched exactly. Keyless; an optional NYC_APP_TOKEN only raises the rate limit.

HPD complaints and problems for one building (dataset ygpa-z7cr; one row per reported problem within a complaint). Give the house number, street, and borough. Returns an open/closed count summary plus the most recent matching problems (category, status, dates). Street is matched as an uppercase substring; house number exactly. Keyless.

Who is on file with HPD for a building, the 'who do I actually serve' tool. Joins HPD Registrations (tesw-yqqr) to Registration Contacts (feu5-w2e2) by registration id. Give the house number, street, and borough. Returns the registration(s) and every contact (corporate/individual owner, head officer, officer, agent, site manager) with names and business addresses. Reflects HPD registration filings, which can lag reality. Keyless.

The reverse of who_owns: every building currently registered with HPD under a given landlord, corporation, officer, or agent name. Searches HPD Registration Contacts (feu5-w2e2) for the name (case-insensitive substring against corporation names and person first/last names), then resolves each matched registration to its building (tesw-yqqr): address, borough, zip, BIN, registration dates, and which contact matched. Start from a name surfaced by who_owns or landlord_litigation. Landlords often hold each building in a separate LLC; officer and agent person names frequently connect buildings the LLC names hide. Reflects current HPD registration filings only. Keyless.

HPD Housing Litigations (dataset 59kj-x8nc): HPD-initiated cases against landlords plus tenant actions. Look up by building (house_number + street + borough) OR by respondent (landlord/owner) name. At least one is required. Returns case type, open date, status, judgement, any harassment finding, penalty, and respondent, with a by-status summary. Respondent and street are matched as case-insensitive substrings. Keyless.

Marshal-executed evictions (dataset 6z8x-wfk4). IMPORTANT: this dataset lists evictions a city marshal actually CARRIED OUT, not filings, warrants, or pending housing-court cases. Look up by court index number OR by address and/or borough. At least one is required. Returns court index number, address, executed date, marshal, and residential/commercial flag. Address is matched as a case-insensitive substring of the combined eviction address. Keyless.