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Onslow County, NC Building Safety: Plumbing Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Onslow County Code § 5-1(a)(5)
Adopted code editions
NC Plumbing Code, 2002 & 2006
2006 edition effective date
July 1, 2006
2002 edition sunset
December 31, 2006
General penalty (§ 1-6)
Up to $500 or 6 months

Summary

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.

These county ordinances apply to unincorporated areas of Onslow County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

(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 amended or modified in this Chapter:...(5)North Carolina Plumbing Code (2002 and 2006 editions).* *2006 editions of these codes became effective July 1, 2006, but the 2002 editions remain effective through December 31, 2006.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 10).

Full Breakdown

" A footnote to the list specifies that the 2006 editions of these codes, including the Plumbing Code, became effective July 1, 2006, while the 2002 editions remained effective through December 31, 2006, giving builders a defined transition window between the two editions. Onslow County has no separate plumbing ordinance; every water supply line, drain, vent, fixture installation, and sewage connection in the unincorporated county is governed by this adopted state Plumbing Code rather than by locally drafted plumbing standards. Subsection (c) provides that later amendments the North Carolina Building Code Council adopts to the Plumbing Code become effective in the county automatically once filed with the Planning and Development Department, and subsection (d) requires that department to keep an official copy of the code and its amendments on file.

The county's separate minimum housing article requires every dwelling unit to be connected to a potable water supply and public sewer, or an approved and permitted sewage disposal system, and to maintain all plumbing fixtures in operable condition, reinforcing this plumbing code adoption with a habitability floor for existing housing.

Violations & Fines

Plumbing work performed without the required permit, or that fails to conform to the adopted North Carolina Plumbing Code, is enforced under the Code's general penalty, section 1-6: a fine of up to $500 or imprisonment for up to six months per offense, with each day of continued noncompliance treated as a separate offense.

Frequently Asked Questions

What plumbing code applies to new construction in Onslow County?
Section 5-1(a)(5) adopts the North Carolina Plumbing Code, in its 2002 and 2006 editions, by reference to control plumbing installation throughout the county's planning jurisdiction, with the 2006 edition effective July 1, 2006 and the 2002 edition remaining valid through December 31, 2006.
Does a rental unit have to be connected to public sewer?
Yes. The minimum housing article's plumbing standards for existing housing require every dwelling unit to be connected to a potable water supply and public sewer, or an approved and permitted sewage disposal system, with all fixtures kept in operable condition.
Is there a separate county plumbing ordinance?
No. Onslow County has no stand-alone plumbing ordinance. Section 5-1(a)(5) folds plumbing standards into the general Code by adopting the state Plumbing Code by reference, so plumbing work is judged against that state code rather than a locally written one.

Sources & Official References

Other rules in Onslow County

All Onslow County rules

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