The county building department in County administers construction permits and enforces building codes for unincorporated areas and municipalities that contract county services rather than maintaining their own building divisions. There are 8 Building Departments locations in County, New Jersey.

Property owners in unincorporated County should verify with the county building department whether their parcel falls under county or municipal jurisdiction before submitting permit applications, as this affects which office handles the review and which codes apply.

List of Mercer County, New Jersey Building Departments

Mercer County Planning Department

View Details Call Now (609) 989-6545

Mercer County Planning Department

Address
Get Direction
Hours

Hopewell Planning And Zoning Department

View Details Call Now (609) 466-1492

Hopewell Planning And Zoning Department

Address
Get Direction
Hours

Princeton Zoning

Address
Get Direction
Hours

Hopewell Building Department

View Details Call Now (609) 466-2570

Hopewell Building Department

Address
Get Direction
Hours

Princeton Township Building Department

View Details Call Now (609) 921-7078

Princeton Township Building Department

Address
Get Direction
Hours

Trenton Zoning

Address
Get Direction
Hours

Lawrence Township Zoning

View Details Call Now (609) 844-7076

Lawrence Township Zoning

Address
Get Direction
Hours

Borough Zoning

Address
Get Direction
Hours

Contractors and property owners in County should keep copies of all issued permits, approved plans, and inspection sign-off cards at the job site for the duration of construction. Final inspection requests must be scheduled in advance, and the certificate of occupancy is issued only after all required inspections pass.

You may also find Building Departments locations in neighboring counties including Middlesex, Monmouth, Somerset.