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Home / New Jersey Permits / Middlesex County

Building Permits in Middlesex County, New Jersey

County jurisdiction
Local details being verified — statewide baseline shown

Adopted Construction Codes

These are the state-level code editions for New Jersey. They apply in Middlesex Countyunless a verified local adoption or amendment is noted — in local-adoption states, confirm the city or county's own code editions with the building department.

CodeEditionAdoption
IBC — International Building Code2021N.J.A.C. 5:23-3.14 (NJ edition) · source ↗
IECC — International Energy Conservation Code2021N.J.A.C. 5:23-3.18 · source ↗
IFGC — International Fuel Gas Code2021N.J.A.C. 5:23-3.22 · source ↗
IMC — International Mechanical Code2021N.J.A.C. 5:23-3.20 · source ↗
IRC — International Residential Code2021N.J.A.C. 5:23-3.21 (NJ edition) · source ↗
NEC — National Electrical Code (NFPA 70)2020N.J.A.C. 5:23-3.16 · source ↗
NSPC — 2021National Standard Plumbing Code, N.J.A.C. 5:23-3.15 · source ↗

Permit Requirements

Permit-type details for Middlesex County (fees, required documents, inspection sequence) are being verified with the local building department. In the meantime, contact the county building department directly, or ask the BuildSpec Copilot about statewide requirements.

Building Department

Building department website ↗

Phone: 732-745-3283

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Related on BuildSpec

New Jersey adopted codes →New Jersey DOT specifications →Code calculators →