Building Safety in Onslow County, NC (2026)
4 rules for unincorporated Onslow County, North Carolina.
Verified from official government sources
Carbon Monoxide Detectors
Onslow County's rental housing code requires landlords to install at least one carbon monoxide alarm whenever a rented dwelling has an attached garage or a fossil-fuel heater, fireplace, or appliance. The landlord must also repair or replace a failed alarm within 15 days of written notice.
Onslow County Carbon Monoxide Alarm Rule
Some RestrictionsOnslow County Code of Ordinances § 5-104(c)(5)
(5)Smoke alarms shall be provided which are operable and in good repair. The landlord is responsible to provide at least one carbon monoxide alarm when there exists an attached garage or fossil-fuel burning heater, fireplace, and/or appliance. Unless the landlord and tenant have a written agreement to the contrary, the landlord shall place new batteries in the alarms at the beginning of each te...
Building Permits
Onslow County Code § 5-1(a) adopts the North Carolina Building Code, Residential Code and related state construction codes by reference, word for word, to control every improvement built within the county's planning jurisdiction. The Planning and Development Department administers and files the codes and any amendments the state adopts.
Onslow County Building Code Adoption & Permits
Some RestrictionsOnslow County Code of Ordinances § 5-1(a)
(a)State building codes adopted by reference. The following North Carolina regulatory codes and their appendices, as adopted by the North Carolina Building Code Council pursuant to N.C.G.S. § 143-138, are hereby adopted by reference and shall control construction and installation of improvements within the planning jurisdiction of the County as if set forth herein word for word, except as amend...
Electrical Permits
Onslow County Code § 5-1(a)(7) adopts the North Carolina Electrical Code, 2005 edition, by reference to govern electrical construction and installation within the county's planning jurisdiction. Any later state amendment takes effect automatically once filed with the Planning and Development Department.
Onslow County Electrical Code Adoption
Some RestrictionsOnslow County Code of Ordinances § 5-1(a)(7)
(a)State building codes adopted by reference. The following North Carolina regulatory codes and their appendices, as adopted by the North Carolina Building Code Council pursuant to N.C.G.S. § 143-138, are hereby adopted by reference and shall control construction and installation of improvements within the planning jurisdiction of the County as if set forth herein word for word, except as amend...
Plumbing Permits
Onslow County Code § 5-1(a)(5) adopts the North Carolina Plumbing Code, 2002 and 2006 editions, by reference to govern plumbing construction and installation across the county's planning jurisdiction. The 2006 edition took effect July 1, 2006, while the 2002 edition remained effective through December 31, 2006.
Onslow County Plumbing Code Adoption
Some RestrictionsOnslow County Code of Ordinances § 5-1(a)(5)
(a)State building codes adopted by reference. The following North Carolina regulatory codes and their appendices, as adopted by the North Carolina Building Code Council pursuant to N.C.G.S. § 143-138, are hereby adopted by reference and shall control construction and installation of improvements within the planning jurisdiction of the County as if set forth herein word for word, except as amend...
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