Suffolk County Building Department

Find Suffolk County New York building departments, planning, permits, zoning, and inspections. Building Departments provide information on certificates of occupancy (CO), building codes, construction codes, inspections, safety, violations, permits, community planning, zoning laws, regulations, ordinances, maps, and land use.


Branch Village Building Department 40 Route 111 Smithtown NY 11787 631-979-8989


Brookhaven Zoning 1 Independence Hill Farmingville NY 11738 631-451-6477

East Hampton Planning Department 300 Pantigo Place East Hampton NY 11937 631-324-2178

East Hampton Zoning 300 Pantigo Place East Hampton NY 11937 631-324-8816

Huntington Zoning 100 Main Street Huntington NY 11743 631-351-3123

Islip Planning Department 655 Main Street Islip NY 11751 631-224-5450

Lindenhurst Building Department 430 South Wellwood Avenue Lindenhurst NY 11757 631-957-7510

Lindenhurst Zoning 430 South Wellwood Avenue Lindenhurst NY 11757 631-957-7516

New York State Permits 50 Circle Road Stony Brook NY 11790 631-716-3608

North Babylon Town Building Department 200 Sunrise Highway Lindenhurst NY 11757 631-957-3108

Patchogue Building Department 14 Baker Street Patchogue NY 11772 631-475-8942

Port Jefferson Building Department 88 North Country Road Port Jefferson NY 11777 631-473-4744

Sag Harbor Building Department 55 Main Street Sag Harbor NY 11963 631-725-0224

Shelter Island Town Zoning 46 North Ferry Road Shelter Island NY 11964 631-749-0758

Smithtown Building Department 99 West Main Street Smithtown NY 11787 631-360-7520

Smithtown Zoning 99 West Main Street Smithtown NY 11787 631-360-7540

Southampton Zoning 116 Hampton Road Southampton NY 11968 631-287-5707

Southold building department 54375 Middle Road Southold NY 11971 631-765-1802

Suffolk County Planning Department 100 Veterans Memorial Highway Hauppauge NY 11788 631-853-5191

Westhampton Beach Building Department 165 Mill Road Westhampton Beach NY 11978 631-288-3444

How much does a building permit cost?

Building permit fees vary significantly from one locality to another. The fees are usually based on the total cost of the project.

If I have been issued a building code violation, can I appeal?

Yes, a building code violation can be appealed. In most cases, a local board will hear building code appeals. An appeal should be filed as soon as possible, as some jurisdictions impose deadlines for submitting appeals. The appeals process may require a fee.

Can the Building Department recommend a local home improvement contractor?

Local Building Departments are generally reluctant to recommend specific contractors. However, many will provide a list of licensed contractors that serve the local area.