HPD Violation Data for Contractors: How to Use NYC Housing Data to Win Jobs
NYC's Department of Housing Preservation and Development (HPD) issues hundreds of thousands of violations every year. Each one is a building owner with a documented problem and a legal deadline to fix it. Here is how contractors are turning HPD violation data into a reliable pipeline of high-value work.
What Is HPD Violation Data and Why Should Contractors Care?
HPD is the city agency responsible for enforcing NYC's Housing Maintenance Code. When tenants file complaints about mold, pests, heat, water damage, or other habitability issues, HPD sends inspectors. If the inspector confirms a violation, it goes into a public database with the building address, owner information, violation class, and correction deadline.
For contractors, HPD violation data is essentially a real-time feed of building owners who need professional help. Every open violation represents work that must be completed by a licensed contractor. The data is public, free to access, and updated daily through NYC Open Data.
The challenge is that raw HPD data is massive, unfiltered, and difficult to act on without significant processing. There are over 8 million historical records. Knowing how to filter, prioritize, and act on HPD violation data is what separates contractors who use it effectively from those who get overwhelmed by the volume.
Understanding HPD Violation Classes
HPD categorizes violations into three classes based on severity. Understanding these classes is critical for contractors who want to prioritize the most urgent (and most profitable) leads.
Class A - Non-Hazardous
Minor issues like chipped paint, missing fixtures, or cosmetic damage. Owners get 90 days to correct. These are lower priority for most contractors since the urgency is low and job sizes tend to be small.
Class B - Hazardous
Conditions that affect health or safety but are not immediately life-threatening. Includes water leaks, inadequate ventilation, and pest infestations. Owners get 30 days to correct. Good leads for HVAC, plumbing, and environmental contractors.
Class C - Immediately Hazardous
Conditions that pose an immediate threat to health or safety. Includes extensive mold, no heat in winter, lead paint hazards, and structural damage. Owners have 24 hours to begin correction and face daily fines until resolved. These are the highest-value, most urgent leads for contractors.
For mold remediation contractors specifically, Class C mold violations are the gold standard. The owner has 24 hours and is actively looking for a contractor who can start immediately.
How to Access HPD Violation Data
HPD violation data is available through several channels. Each has different trade-offs between ease of use and actionability:
NYC Open Data Portal (Free, Raw)
The official source at data.cityofnewyork.us. You can download CSV files or query the API. The dataset includes 8+ million records with violation details, dates, and building identifiers. No owner contact info included directly - you need to cross-reference with HPD registration records.
HPD Online Portal (Free, Searchable)
HPD's website lets you search individual buildings by address. Useful for one-off lookups but impractical for systematic prospecting. No bulk export, no alerts, no way to filter by your service type across a territory.
Manual Spreadsheet Work (Free, Time-Intensive)
Some contractors download monthly data exports and filter in Excel. This works but requires 5 to 10 hours per week of data processing, manual owner lookups, and has no real-time alerts for new violations.
BuildRadar (Automated, Contractor-Ready)
We pull HPD violation data daily, cross-reference it with owner registration records, score buildings by urgency and recurrence patterns, and deliver filtered leads to your dashboard by ZIP code and service type. Owner contact info is included. New violations hit your dashboard within hours of issuance.
Which HPD Violations Matter Most by Trade
HPD violation data is relevant to many contractor specialties. Here is how to filter by trade:
Filter for violation codes related to mold, mildew, and water damage. HPD Order Numbers 555 and 624 are the most common mold codes. Look for repeat violations at the same address.
Filter for ventilation inadequacy, no heat complaints, and air quality issues. Buildings with ventilation violations often have duct systems that need cleaning or replacement.
Filter for lead paint violations (common in pre-1978 buildings). NYC Local Law 1 requires annual inspections in buildings with children under 6. Violations here require certified abatement contractors.
Filter for leak complaints, water infiltration, and plumbing failures. These often precede mold violations and represent time-sensitive restoration work.
Turning HPD Data Into Closed Jobs: The Outreach Formula
Having HPD violation data is only valuable if you act on it effectively. The contractors who close the most jobs from violation data follow a specific outreach formula:
- •Reference the specific violation (address, date, class) in your first contact. This demonstrates you are not cold-calling blindly.
- •Offer a free on-site assessment within 24 to 48 hours. Speed wins when the owner is facing daily fines.
- •Mention your license number and insurance coverage upfront. Owners dealing with HPD violations need compliant contractors for signoff.
- •Follow up within 72 hours if no response. Many owners are managing multiple buildings and may miss the first contact.
- •Track every outreach in a CRM. Buildings with violations tend to have recurring issues. Today's non-response becomes next month's closed job.
The BuildRadar Advantage: HPD Data, Pre-Processed and Exclusive
You can absolutely work HPD violation data manually. Download the CSV, filter in Excel, look up owners one by one, and run your own outreach. Many contractors do this successfully.
BuildRadar exists for contractors who want the data processed, scored, and delivered with owner contact info already attached. We pull from HPD, DOB, FDNY, ECB, and DEP daily. We cross-reference violations with building registration records. We score every building by urgency, recurrence, and job size potential. And we deliver it all filtered by your ZIP code territory and service type.
Most importantly, your territory is exclusive. No other contractor in your trade receives the same building data for your ZIP codes. Check our pricing page to see plan details, or run a free territory scan to see how many active HPD violations are in your area right now.
See Active HPD Violations in Your Territory
Enter your ZIP code and trade to see how many buildings have open HPD violations in your area. Free scan, no credit card required. Exclusive territories are limited to one contractor per trade per ZIP.
Run Free Territory Scan