Building Safety in Hawaii County, HI (2026)
6 rules for unincorporated Hawaii County, Hawaii.
Verified from official government sources
Fire Sprinkler Requirements
Hawaii County's amended Building Code requires an automatic sprinkler system throughout every Group R building on the island: apartments, hotels, dorms and assisted-living, but exempts single-family and duplex homes classified as R-3. Hospitals, nursing homes and jails (Group I) face the same mandate with no exemption at all.
Fire Sprinkler Rule for Big Island Apartments
Some RestrictionsHawai'i County Code § 5A-2-1(12) (amending IBC § 903.2.7)
(12) Section 903.2.7 of the International Building Code is amended to read as follows: "903.2.7 Group R. An automatic sprinkler system installed in accordance with Section 903.3 shall be provided throughout all buildings with a Group R fire area. Exception: R-3 residential occupancies."
Childcare Center Rules
Hawaii County's building code classifies a child care facility serving five or fewer people of any age, for under 24 hours, as a residential Group R-3 occupancy rather than a commercial daycare classification. A facility inside a single-family home may instead follow the simpler residential code.
Small Child Care Facility Building Rules
Some RestrictionsHawai'i County Code § 5A-2-1 (amending IBC § 310.1)
R-3 Residential occupancies where the occupants are primarily permanent in nature and not classified as Group R-1, R-2, R-4 or I including: Buildings that do not contain more than two dwelling units. Adult facilities that provide accommodations for five or fewer persons of any age for less than 24 hours. Child care facilities that provide accommodations for five or fewer persons of any age for ...
Building Permits
Hawai'i County requires a permit before you erect, alter, enlarge, repair, relocate, or demolish any building or structure on the Big Island, plus most electrical, plumbing, gas, and fire-sprinkler work. The Department of Public Works enforces Chapter 5 of the county code, charges a valuation-based fee, and issues permits valid for six years from issuance.
When You Need a Building Permit in Hawaii County
Some RestrictionsHawai'i County Code § 5-3-1(a)-(b)(3); see also § 5-5-4, § 5-7-3(b),(d)
Section 5-3-1. Permit required; generally. (a) Except as provided in division 2, no person shall perform any of the following work or cause or permit the same to be done on any building or structure in the County, without first obtaining a permit for this work from the authority having jurisdiction: (1) Erect, construct, enlarge, alter, repair, relocate, improve, remove, convert, or demolish an...
Electrical Permits
Any electrical work in Hawai'i County, wiring, panel upgrades, new circuits, requires a permit from the Department of Public Works before work starts, per HCC § 5-3-1(a)(2). The county adopted the 2017 National Electrical Code as its wiring standard under § 5D-2-1(a). A short list of minor jobs, cord-and-plug appliances, straight motor swaps, tamper-resistant receptacle upgrades, is exempt.
Electrical Permits in Hawai'i County (Big Island)
Some RestrictionsHawaii County Code § 5-3-1(a)(2); § 5D-2-1(a)
HCC § 5-3-1(a): Except as provided in division 2, no person shall perform any of the following work or cause or permit the same to be done on any building or structure in the County, without first obtaining a permit for this work from the authority having jurisdiction: ... (2) Erect, install, enlarge, alter, repair, remove, convert, or replace any electrical work... HCC § 5D-2-1(a): The Nationa...
Plumbing Permits
Hawai'i County adopts the 2012 Uniform Plumbing Code for every plumbing, gas, and drainage installation on the island, and Section 5F-1-3(6) bars connecting any plumbing system to a building without a permit first. The Department of Public Works reviews applications under Chapter 5F, and unpermitted work risks a stop-work order, a civil fine up to $1,000 a day, or criminal prosecution.
Plumbing Permit Rules in Hawai'i County
Some RestrictionsHawaii County Code § 5F-1-3(6)
(6) Agricultural buildings, structures, and appurtenances without electrical power and plumbing systems are exempt from permit and construction code requirements, pursuant to section 46-88, Hawai`i Revised Statutes, except as otherwise provided for in this construction code. No plumbing systems shall be connected to a building or structure without first obtaining a permit for plumbing work.
Building Inspections
Hawaii County requires a sequence of inspections during any permitted construction: footing/foundation, slab or under-floor, framing, insulation, lathing, rough electrical and plumbing, then a final inspection before the work is closed out. The Department of Public Works, as the authority having jurisdiction, must receive a formal request and responds within two working days.
Building Inspection Stages in Hawaii County
Some RestrictionsHawai'i County Code §§ 5-8-3(c), 5-8-4(b)(2), (4), 5-8-5
The request for inspection shall be filed with the authority having jurisdiction not less than two working days and not more than three working days before any such inspection is desired. ... Footing and foundation inspections shall be made after excavations for footings are complete and any required reinforcing steel is in place. ... Framing inspections shall be made after the roof deck or she...
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