Understanding NYC Building Permits
The NYC Department of Buildings (DOB) issues permits for virtually all construction, renovation, and demolition work in the five boroughs. RegWatch tracks permits across 2.9M+ NYC properties, combining data from DOB NOW and BIS for complete coverage. Permits range from minor alterations (Alt-3) to major new building construction (NB). Understanding a property's permit history reveals critical information about construction activity, planned renovations, and compliance status.
Traditionally, checking permit status requires navigating DOB NOW or BIS (Building Information System) — separate systems with different interfaces and data. Contractors and expediters often need to cross-reference both systems to get a complete picture.
Complete Permit Intelligence with RegWatch
RegWatch aggregates permit data from all DOB systems and presents it in a clean, filterable interface. For each property you'll see:
- Active permits — currently open jobs with status and type
- Historical permits — complete filing history
- Job types — NB (New Building), A1/A2/A3 (Alterations), DM (Demolition)
- Filing status — pre-filing, approved, issued, sign-off
- Contractor and owner information
- Associated violations for each permit
This is invaluable for investors evaluating development activity in a neighborhood, contractors checking on competing projects, and property owners monitoring work on adjacent buildings.
Permit Data for Due Diligence
Open permits can be a red flag during property transactions. Unpermitted work, expired permits, and outstanding DOB objections can delay closings, increase insurance costs, and create liability. Check for associated DOB violations and ECB penalties alongside permit data. RegWatch flags these issues automatically, helping attorneys and title companies identify permit-related risks before they become problems.
What You Get with RegWatch
- Active and historical permit search
- DOB NOW and BIS data combined
- Job filing type and status tracking
- Contractor and applicant details
- Permit-violation cross-referencing
- Construction activity monitoring
- PDF permit reports
- Neighborhood development tracking
Frequently Asked Questions
How do I check permits on a NYC building?
Enter any NYC address into RegWatch to see all active and historical building permits, including job type, status, and associated violations.
What do permit types (NB, A1, A2, A3) mean?
NB = New Building, A1 = Major Alteration (change use/egress/occupancy), A2 = Alteration involving multiple work types, A3 = Minor Alteration (one work type, no change of use).
Can open permits affect a property sale?
Yes. Open or expired permits may need to be resolved before closing. They can also affect title insurance and indicate unpermitted work.
Can I track construction activity in a neighborhood?
Yes. RegWatch shows permit filings for any address, making it easy to monitor development activity in specific areas.
Does RegWatch show both DOB NOW and BIS data?
Yes. RegWatch aggregates permit data from both DOB NOW (the newer system) and BIS (the legacy Building Information System) for complete coverage.
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