Building Permits in Clarkstown
Building Department
Inspector: Larry Kay
Phone: 845-639-2100
Email: building@clarkstown.gov
Hours: Mon–Fri 9:00am–5:00pm
Address: 10 Maple Avenue, New City, NY 10956
Covers unincorporated hamlets only: New City, Nanuet, Valley Cottage, Congers, West Nyack, Bardonia. Upper Nyack (a village within Clarkstown) has its own separate building department.
How It Works in Clarkstown
- Largest town in Rockland County by population (86,000+)
- Building dept covers unincorporated hamlets: New City, Nanuet, Valley Cottage, Congers, West Nyack, Bardonia
- Upper Nyack is a village within Clarkstown with its own separate building department — if you live there, contact Upper Nyack, not the town
- Permit fees: $150 for first $1,000 of construction value, then $18 per additional $1,000
- Clarkstown does NOT require a fence permit — but setback rules from Section 290-21B(5) of the Zoning Ordinance still apply
- Wood stoves and fireplaces require a building permit and two sets of construction drawings
Common Questions
I live in Nanuet (or New City, West Nyack, Valley Cottage) — which building department do I use?
If you live in an unincorporated hamlet — Nanuet, New City, West Nyack, Valley Cottage, Congers, or Bardonia — use the Clarkstown Building Department at 10 Maple Ave, New City, 845-639-2100. If you live in Upper Nyack (a separate village), contact Upper Nyack's building department instead. Not sure? Check your tax bill — it lists both your town and any village.
How much does a building permit cost in Clarkstown?
Clarkstown calculates permit fees based on the dollar cost of the project: $150 for the first $1,000 of construction value, then $18 for each additional $1,000 (or part thereof). A $20,000 deck project would cost roughly $492 in permit fees. Call 845-639-2100 to confirm current fees.
Do I need a fence permit in Clarkstown?
No — Clarkstown does not require a fence permit. However, fence height and setback regulations from Section 290-21B(5) of the Zoning Ordinance still apply. Solid fences and walls cannot exceed 4.5 feet along lot lines in most residential areas. Fences up to 6 feet are permitted if set back at least 2/3 of the fence height from the property line. Street intersection locations have additional visibility requirements.
Also Useful
Planning Board
Zoning Code
All Rockland County permits
Clarkstown town guide
Find a licensed contractor
2026 Election Guide — Clarkstown
This guide summarizes publicly available information. Requirements, fees, and procedures change — always verify current information with the building department before starting a project. This is not legal advice.