Hawaii Building Permits — Complete Guide (2026)
Find, Apply & Track Permits in Cities and Counties Across Hawaii
Hawaii has the highest permit costs in the nation and among the most complex codes, driven by seismic, hurricane, and tsunami risk requirements. Each county operates its own permit system with significant differences between islands.
How building permits work in Hawaii
Building permit requirements and processing times in Hawaii vary by city and county. Use the links below to apply, check status, schedule inspections and find permit information for your location.
Learn the step-by-step permit process →Not sure where to apply?
Enter your city or address to find your permit office.
Permit costs by type — Hawaii
| Permit Type | Fee Range | Processing Time | Notes |
|---|---|---|---|
| Electrical | $150–$400 | 2–7 days | Licensed electrician required statewide |
| Plumbing | $125–$350 | 2–7 days | Licensed plumber required |
| HVAC / Mechanical | $150–$450 | 2–7 days | AC permits high volume in Honolulu |
| Roofing | $200–$600 | 2–7 days | Hurricane-resistant materials often required |
| New Construction | $1,500–$6,000+ | 8–24 weeks | Honolulu plan review among slowest in US |
| Room Addition | $600–$2,000 | 4–12 weeks | Seismic engineering required |
| Pool | $300–$900 | 3–8 weeks | Seismic and flood zone compliance |
| Solar | $150–$500 | 2–7 days | Hawaii has highest solar penetration in US |
| Deck / Patio | $200–$700 | 2–6 weeks | Wind and seismic loads required |
| ADU / Ohana unit | $400–$1,200 | 3–8 weeks | Traditional Hawaii concept — county rules vary |
Major Hawaii cities — apply online
Most Hawaii building permits are issued by cities. Click your city to access the permit portal, apply online, or check permit status.
Permit costs by county — top Hawaii counties
County building departments handle unincorporated areas. Click a county to access its permit portal directly.
How to get a building permit in Hawaii
Identify your county permit office
Contact the building division for your island: Honolulu (DPP), Hawaii County, Maui County, or Kauai County. Each has different processes and timelines.
Hire a Hawaii-licensed architect or engineer
Most structural projects require plans stamped by a Hawaii-licensed professional. The state has specific design requirements for seismic, wind, and flood zones.
Submit for plan review
Honolulu plan review is notoriously slow — budget 8–16 weeks for structural projects. Other counties are somewhat faster. Online submission is partial in Honolulu.
Pay fees
Hawaii permit fees are among the highest in the US, calculated as a percentage of project valuation.
Inspections
Hawaii requires phase inspections. On neighbor islands, inspection availability can be limited — schedule well in advance.
ADU permits in Hawaii — what you need to know
🏠 Hawaii ADU-friendly status: Partial
Hawaii has some of the most aggressive ADU laws in the US. Oahu allows ADUs and ohana units on most lots. The state passed Act 226 in 2021 streamlining ADU approvals. High construction costs ($300–$1,500/sq ft) are the primary barrier, not permits.
Find a licensed Hawaii contractor
Hawaii requires licensed professionals for most permitted work. Always verify a contractor's license before hiring — it protects you and is required for most permit types.
General Contractors
Find pre-screened general contractors for your Hawaii home project. Compare quotes on permitted work.
Find a Contractor →Verify HI License
Verify your contractor holds a valid Hawaii DCCA – Contractors License Board license before any permitted work begins.
Verify HI License →Electricians & Plumbers
Specialty-licensed electricians and plumbers are required for all permitted electrical and plumbing work in Hawaii.
Learn More →Ready to get started? Browse verified, licensed contractors serving Hawaii homeowners and get free quotes on your project.
🔍 Find a Contractor Near YouFrequently asked questions — Hawaii permits
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