Nassau County Building Department

Find Nassau 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.


Freeport Building Department 46 North Ocean Avenue Freeport NY 11520 516-378-0700


Hempstead Building Department 1 Washington Street Hempstead NY 11550 516-538-8500

Hempstead Planning Department 200 North Franklin Street Hempstead NY 11550 516-538-7100

Hempstead Planning Department 383 Nassau Road Roosevelt NY 11575 516-378-2111

Lawrence Building Department 196 Central Avenue Lawrence NY 11559 516-239-3987

Manhasset Planning Department 210 Plandome Road Manhasset NY 11030 516-869-7752

Nassau County Planning Department 1 West Street Mineola NY 11501 516-571-4203

North Hempstead Building Department 210 Plandome Road Manhasset NY 11030 516-869-7680

North Hempstead Zoning 210 Plandome Road Manhasset NY 11030 516-869-7659

Oyster Bay Planning Department 74 Audrey Avenue Oyster Bay NY 11771 516-624-6200

Oyster Bay Zoning 74 Audrey Avenue Oyster Bay NY 11771 516-624-6232

Valley Stream Zoning 123 South Central Avenue Valley Stream NY 11580 516-825-8201

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.