North Carolina State Building Code: Requirements and Updates
Authored by: Rimkus Built Environment Solutions Marketing Team
North Carolina’s 2018 State Building Code remains the governing statewide standard. The adopted 2024 Code awaits a certification-triggered effective date under Session Law 2025-2, and electrical work follows its own track: the 2020 Electrical Code applies outside the 2018 Residential Code’s scope, while the 2017 Code governs within it.
Owners, condominium boards, and design teams search for this topic when a renovation, addition, or occupancy change forces a decision about which edition controls permitting, since choosing wrong can affect design assumptions and permit review, a risk closely tied to broader building code compliance questions on any active project.
This overview explains which edition applies today, how the 2024 Code’s certification process works, and how the pending transition may affect existing buildings and ongoing projects.
Key takeaways: North Carolina State Building Code status at a glance
North Carolina’s 2018 code suite remains the governing statewide standard, while the adopted 2024 suite awaits a certification-triggered date. The points below summarize what applies today.
Current code status
- The 2018 Code remains in force statewide pending the 2024 Code’s certification-triggered effective date
- An owner or agent may request early use of the adopted 2024 Code under Section 102.5’s alternate-method provision
- The 2020 Electrical Code governs outside the 2018 Residential Code’s scope; the 2017 Electrical Code applies within it
What this means for projects
- Existing buildings are evaluated under code provisions for the specific work, not a blanket “original permit” rule
- Confirming the applicable edition with the local inspection department is a practical step
A Rimkus Building Expert can help confirm code applicability before permitting begins. Contact Rimkus to discuss a specific property.
Which code edition applies to a project today
Owners and boards checking whether planned work meets code are generally working from one current suite, plus a second, adopted suite that is not yet mandatory. The answer depends on permit timing, project scope, and whether an owner has requested the newer code where allowed.
What applies today
The North Carolina Office of State Fire Marshal (OSFM) identifies the 2018 North Carolina codes, effective since January 1, 2019, as the currently effective statewide suite. The adopted 2024 Code does not become generally effective until the statutory certification process in Session Law 2025-2 is complete. Electrical work follows a separate track, addressed later in this article.
How the transition may affect a project
Before the 2024 Code’s general effective date, Section 102.5 of the 2018 North Carolina Administrative Code and Policies allows an owner or agent to request use of the adopted 2024 Code as an alternate method of construction. OSFM states the Code Enforcement Official shall accept an adopted, Rules Review Commission-approved rule when such a request is made, though teams should still coordinate documentation with that official.
What the North Carolina State Building Code covers
North Carolina’s State Building Code establishes statewide authority over the design, construction, alteration, and repair of buildings, addressed through separate code volumes.
OSFM’s code listing shows nine currently effective 2018 volumes, covering building, residential, existing building, fire, fuel gas, mechanical, plumbing, energy conservation, and administrative provisions, most based on the 2015 International Codes with North Carolina amendments.
Code applicability for a given building generally turns on its occupancy classification and scope of work rather than its ownership structure, so questions specific to condominiums or other multi-unit ownership forms are best confirmed with the local inspection department and applicable code provisions for condominium consulting needs.
How the 2018 code applies across building types
The currently effective 2018 Building and Residential Codes address commercial and multifamily buildings and one- and two-family dwellings within their respective scopes. The separately current 2020 State Electrical Code follows its own schedule, so a single project can involve different code editions for different disciplines.
The 2018 code’s basis for commercial and residential work
The 2018 North Carolina Building Code is based on the 2015 International Building Code with North Carolina amendments and applies to buildings within its scope, including many commercial and multifamily projects. One- and two-family dwellings within the Residential Code’s scope follow the 2018 North Carolina Residential Code, based on the 2015 International Residential Code with North Carolina amendments.
Local inspection departments generally follow the statewide code position, though local plan-review requirements and transition guidance can vary by jurisdiction and change over time.
The 2020 National Electrical Code exception
The 2020 North Carolina Electrical Code, based on the 2020 National Electrical Code with North Carolina amendments, has been effective since November 1, 2021. OSFM identifies it as the current electrical code for buildings and structures outside the scope of the 2018 North Carolina Residential Code. Buildings and structures within that scope, including one- and two-family dwellings, remain under the 2017 North Carolina Electrical Code.
The National Fire Protection Association generally publishes a new National Electrical Code edition on a three-year cycle, and North Carolina adopts each one through its own rulemaking and effective-date process. A renovation under the 2018 suite may still need its electrical work checked against the current 2020 code, while mechanical work follows the Mechanical Code within that suite.
Status of the 2024 code update
The adopted 2024 North Carolina State Building Code comprises ten code volumes: Building, Residential, Existing Building, Energy Conservation, Fire, Fuel Gas, Mechanical, Plumbing, Electrical, and Administrative Code and Policies. OSFM identifies the electrical component as the 2023 North Carolina Electrical Code.
A June 1, 2026, notice from the North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors states that the 2024 Code will take effect no earlier than one year after the General Assembly approves the Governor’s nominees to the Residential Code Council, and that May 1, 2027, is the earliest possible date, although that date has not been set and may be delayed further.
Factors that may delay the effective date
Session Law 2025-2, ratified March 19, 2025, ties the 2024 code’s effective date to a State Fire Marshal certification rather than a fixed date. The State Fire Marshal may certify completion only after: the initial publication and printing of the adopted 2024 Code, including amendments adopted as of March 19, 2025; distribution to required state and local recipients; public availability for purchase; and full constitution of the Residential Code Council under its statutory membership requirements. The Code then becomes effective 12 months after the first day of the month following that certification.
As of the June 1, 2026, licensing board notice, the Residential Code Council nominees had not yet been approved, so the 12-month period had not begun. Because this status can change, project teams should confirm the current effective date with OSFM or the local inspection department.
Voluntary use of the 2024 code in the interim
Until the 2024 Code takes effect, Section 102.5 of the 2018 North Carolina Administrative Code and Policies requires the Code Enforcement Official to accept adopted, Rules Review Commission-approved rules as an alternate method of construction when an owner or the owner’s agent requests it. Whether a request must cover an entire project or only part of a scope of work should be confirmed with the local inspection department and current OSFM guidance during pre-construction planning.
How code updates may affect existing buildings and ongoing projects
A new code edition does not ordinarily require an existing occupied building to be rebuilt solely because the code changed. The applicable requirements instead depend on the work category and scope, for example repairs, alterations, additions, change of occupancy, or a specifically identified unsafe condition, under the North Carolina Existing Building Code and other applicable code provisions. The original permit date alone does not resolve every code-applicability question.
Whether a pending application may continue under an earlier edition if the code changes mid-review depends on the applicable transition rule and application status, a determination for the local inspection department rather than a general rule.
For an existing completed building, maintenance and retrofit obligations depend on the applicable Existing Building Code, Fire Code, and current OSFM interpretations. Required fire-protection systems generally must be maintained in operating condition, and inspection frequency for multifamily common areas varies by occupancy and local program. Older buildings may face additional requirements, so a project-specific determination from local officials confirms what applies.
A change in use or occupancy can require local review even when no physical construction is proposed, such as converting an office suite to a different commercial use, so a project should not be assumed exempt from that review.
Why code compliance matters beyond permitting
Local enforcement staff may issue a written stop-work order under G.S. 160D-404(b) when work is undertaken in substantial violation of state or local law or in a manner that endangers life or property. The order must state the work to be stopped, the reasons for it, and the conditions for resuming work. Violating a stop-work order is a Class 1 misdemeanor.
A certificate of compliance is generally required before a new building, addition, enlargement, or altered or moved building may be occupied, and the inspection department issues it once completed work meets applicable law and the permit terms. Occupying it before that certificate, or an authorized temporary certificate, has been issued is a Class 1 misdemeanor.
Civil-penalty authority is not a single statewide rule; it depends on the applicable local ordinance and the enforcement authority available to that city or county, so the jurisdiction’s ordinance should be checked before assuming a specific penalty applies.
For a building declared unsafe under G.S. 160D-1119 or a corresponding local ordinance, a local government may repair or secure it, or demolish or remove an unsafe building in lieu of repair under G.S. 160D-1125, with removal or demolition costs becoming a lien against the property. North Carolina’s residential property disclosure requirements use statutory forms and depend on the seller’s knowledge and applicable exemptions, so they are not a blanket mandate to disclose every code issue. A commercial property condition assessment may include review of available building, fire, and permit records depending on the agreed scope of work, though it does not guarantee every violation will surface.
Standard property insurance may limit or exclude some increased costs tied to ordinance-or-law requirements after a covered loss, and code upgrade coverage for those costs may require a separate endorsement, so reviewing the policy with an insurer or broker matters more than assuming standard coverage applies. The Federal Emergency Management Agency (FEMA) and code-industry research have reported that adoption and enforcement of modern hazard-resistant building codes can reduce modeled disaster losses over time, though the benefit varies by hazard, building type, and compliance level.
Official information channels for code changes
OSFM’s current-and-past-codes page lists current code editions and links to the 2024 effective-date process, and its electrical division page addresses electrical-code updates. OSFM also publishes code interpretations, whose legal effect depends on the interpretation’s type and issuing authority.
Local inspection departments may publish code-transition updates through official notices and plan-review portals, so checking the current local guidance is worthwhile before filing. Design professionals can also review a continuing education program addressing code changes of this kind.
Planning North Carolina projects while the 2024 code waits on certification
Project teams generally benefit from confirming the applicable edition before finalizing permit timing, since the 2024 code’s status can change as certification requirements are met. An independent review of project scope against the 2018 text and the pending 2024 provisions can help clarify the edition question before plans reach the permit counter.
For code applicability questions on a specific North Carolina property, contact us to speak with a Rimkus Building Expert.
Frequently asked questions about the North Carolina State Building Code
Is a building permit required for small repairs in North Carolina?
Under G.S. 160D-1110(c) a building permit is generally not required for construction, repair, replacement, or alteration costing $40,000 or less in a single-family residence, farm building, or commercial building, provided the work complies with the current North Carolina State Building Code. The exemption does not cover work involving load-bearing structures (although replacing windows, doors, siding, and deck boards is exempt), adding or redesigning plumbing, adding, replacing, or redesigning heating, air-conditioning, or electrical systems, using materials the code does not permit, adding new roofing, or changes subject to the North Carolina Fire Code. Confirming with the local inspection department before work begins is advisable.
How do you appeal a building inspection decision in North Carolina?
Under G.S. 160D-1127, an appeal of a local inspection department’s decision under the North Carolina State Building Code generally must be filed in writing with both the State Fire Marshal and the local inspection department within 10 days. Appeals of stop-work orders involving alleged State Building Code violations have a five-day deadline under G.S. 160D-1114. Further appeals may be taken to the Building Code Council or Residential Code Council, or to the courts. Because these deadlines are short, obtaining the written decision promptly is important.
When will the 2024 North Carolina State Building Code take effect?
The 2024 North Carolina State Building Code does not yet have a set effective date. Under Session Law 2025-2, it takes effect 12 months after the first day of the month following the State Fire Marshal’s certification that the code has been published and distributed and that the Residential Code Council is fully constituted. Until then, the 2018 code remains in force, although an owner or agent may request use of the 2024 Code as an alternate method of construction.
This article is intended to provide general information and insights into prevailing industry practices. It is not intended to constitute, and should not be relied upon as, legal, technical, or professional advice. The content does not replace consultation with a qualified expert or professional regarding the specific facts and circumstances of any particular matter.