Mercer County Building Permits (New Jersey)

Search for Mercer County, NJ building permits. A building permit search can provide information on applying for a permit, permit requirements, land use permits, occupancy permits, permit rules, rejected permit applications, appeal a rejected permit, construction permits, demolition permits, septic system permits, renovation permits, looking up permits, checking if a permit is valid, fire code permits, certificates of zoning compliance, and water system permits.


Building Departments in Mercer County, NJ create and enforce building codes and zoning rules to ensure that buildings are safe. They also review and approve building plans and issue Mercer County building permits. These building permits may be required for land development, renovations, demolition, repairs, and other construction. Permits can show if a building meets Mercer County fire codes and other building regulations, demonstrate that a building is safe to occupy, and they can also be used to prove that a construction project holds a valid Mercer County building permit. Mercer County Building Departments provide information on which projects require a building permit, how to apply for a permit, and the rules for receiving a permit. They may also provide searchable databases of approved Mercer County building permits. Building Departments often provide online access to building permit rules and records.

Borough Zoning Hightstown NJ 148 North Main Street 08520 609-490-5112

Hopewell Building Department Hopewell NJ 4 Columbia Ave 08525 609-466-2570

Hopewell Planning and Zoning Department Hopewell NJ 4 Columbia Avenue 08525 609-466-1492

Lawrence Township Zoning Lawrence NJ 2207 Lawrenceville Road 08648 609-844-7076

Mercer County Planning Department Trenton NJ 640 South Broad Street 08611 609-989-6545

Princeton Township Building Department Princeton NJ 400 Witherspoon Street 08542 609-921-7078

Princeton Zoning Princeton NJ 400 Witherspoon Street 08542 609-921-1359

Trenton Zoning Trenton NJ 319 East State Street 08608 609-989-3096


Building Inspectors in Mercer County, NJ ensure that all construction projects meet building codes and regulations. They are responsible for monitoring designs, building materials, Mercer County building safety codes, and utilities like electricity and plumbing. As part of this job, Mercer County Building Inspectors issue permits for new construction, remodels, renovations, and planned construction. They also issue demolition, relocation, and occupancy permits, including inspection reports that verify that a Mercer County property is safe for residents. Building Inspectors maintain records and reports on their inspections and permits, which include information about the Mercer County property owners, the property, and whether the permit is valid. Their records also show Mercer County violations and work stoppage orders. They provide information on how to receive a permit as well as permit requirements, and much of this information may be available on the Building Inspector website.

Hopewell Township Building Inspector Hopewell NJ 201 Washington Crossing Pennington Road 08560 609-737-0612

Princeton Township Building Inspector Princeton NJ 400 Witherspoon Street 08542 609-921-7078


Town and City Halls in Mercer County, NJ provide municipal services for their community, such as preserving vital records and issuing and filing building permits. These Mercer County building permits may be required for a number of construction projects, including renovations, demolitions, repairs, land development, and planned construction. They may also issue land use permits related to property boundary lines, as well as occupancy permits that certify that a building meets code and can be occupied by residents in Mercer County, New Jersey. These records can be used to prove that a construction project has a valid Mercer County permit, find approved and rejected permit applications, or to look up building permit requirements, apply for a permit, or search for approved permits. Town and City Halls typically provide online access to their building permit services.

Trenton City Hall Trenton NJ 319 East State Street 08608 609-989-3000

Washington Township City Hall Trenton NJ 1 Washington Blvd 08691 609-918-0002