State building permit guide
New York building permits — complete guide (2026)
New York has the most complex permitting landscape in the US. New York City operates a completely separate system from the rest of the state. Upstate New York has much simpler, faster requirements.
Avg cost: $300–$2,000+
Processing: 4–16 weeks
~120,000 permits/year
62 counties
$300–$2,000+Average permit cost
4–16 weeksProcessing time
~120,000Permits issued/year
PartialADU-friendly
New York City is a world apart from the rest of New York State. NYC permits require licensed professionals to file most applications and can take months for complex projects. Upstate New York — Buffalo, Albany, Rochester — operates much more like a typical state permitting system with shorter timelines and lower fees.
Permit costs by type — New York
| Permit type | Fee range | Processing time | Notes |
|---|---|---|---|
| Electrical | $125–$300 | 1–5 days | NYC requires licensed master electrician to file |
| Plumbing | $85–$280 | 1–5 days | NYC requires licensed master plumber |
| HVAC / Mechanical | $125–$350 | 2–7 days | NYC requires licensed mechanical contractor |
| Roofing | $150–$500 | 2–7 days | NYC: registered filing rep required for some work |
| Room Addition | $700–$1,800 | 4–12 weeks | NYC: architect or PE required |
| New Construction (upstate) | $600–$1,800 | 3–8 weeks | Much simpler than NYC |
| New Construction (NYC) | $2,000–$10,000+ | 6–24 weeks | Full DOB filing process |
| ADU (upstate) | $500–$1,200 | 3–7 weeks | State law now allows more broadly |
| Solar | $125–$350 | 2–7 days | NYC: expedited solar process available |
| Deck / Patio | $180–$540 | 2–5 weeks | Structural plans required in NYC |
How to get a building permit in New York
1
Determine NYC vs. upstate process
If you are in the five boroughs, you will use the NYC DOB system. All other New York jurisdictions use state or local systems, which are significantly simpler.
2
NYC: hire a registered design professional
Most NYC permit applications must be filed by a registered architect or professional engineer. Homeowners cannot self-file for most work types.
3
NYC: submit via DOB NOW
NYC's DOB NOW online system handles most permit applications. Some work categories still require in-person filing at your local borough office.
4
Upstate: contact your local building department
Outside NYC, contact your city or town building department. Many upstate municipalities have straightforward permitting with shorter timelines and lower fees.
5
Inspections
NYC requires inspections by DOB at each phase. Upstate municipalities require standard phase inspections similar to other states.
6
NYC: Letter of Completion or TCO
NYC issues a Temporary Certificate of Occupancy or Letter of Completion depending on scope. Full CO requires all open violations to be resolved.
Permit costs by county — top New York counties
New York (Manhattan) County
$500–$3,000+
8–24 weeks
Kings (Brooklyn) County
$400–$2,000+
6–20 weeks
Queens County
$350–$1,500
5–16 weeks
Suffolk (Long Island) County
$300–$1,000
4–10 weeks
Nassau (Long Island) County
$300–$900
3–8 weeks
Westchester County
$350–$1,100
4–10 weeks
Erie (Buffalo) County
$150–$500
2–5 weeks
Monroe (Rochester) County
$150–$500
2–5 weeks
Frequently asked questions — New York permits
Why are NYC permits so expensive and slow?
NYC DOB reviews for compliance with local law amendments, zoning resolutions, and multiple overlapping codes. The city's complexity, combined with mandatory professional filings, creates structural delays.
Can I do my own construction work in New York City?
In NYC, any permitted work must be filed by a licensed professional. You can physically do the labor, but paperwork requires licensed professionals.
What is an ALT1 vs ALT2 permit in NYC?
ALT1 is a major alteration that changes occupancy, use, or egress — requires a new Certificate of Occupancy. ALT2 is a minor alteration that does not change these elements.
Does New York State require permits in rural areas?
Yes. New York has a mandatory Uniform Fire Prevention and Building Code that applies statewide, including rural areas. Every municipality must enforce it.
Data sources: US Census Bureau BPS 2024 · New York NYS Department of State — Division of Building Standards · Shovels.ai permit aggregator