Hawaii County (Big Island) Building Permit Process: A Complete Guide
Hawaii County has its own building department, its own fee schedule, and code requirements that differ from Oahu in ways that catch out architects and contractors who work primarily on Oahu. The Big Island is also the only county where lava zone classification is a material factor in every new construction project. Here's how the permit process works, from application to final inspection.
Who issues permits: Hawaii County Department of Public Works
Building permits in Hawaii County are issued by the Department of Public Works, Building Division. The main office is in Hilo, with a satellite office in Kona for West Hawaii projects. Both offices process applications and inspections — Kona handles the majority of permit volume for the west side (Kailua-Kona, Waikoloa, North and South Kohala).
Hawaii County does not use the Honolulu DPP's systems or processes. If your firm works primarily on Oahu, assume nothing carries over — the application forms, the fee schedule, the plan check flow, and the inspection process are all county-specific.
Application: what to submit
Hawaii County accepts permit applications in person at either office. The standard submission package includes:
- Completed application form (BC-1 or current equivalent)
- Site plan showing parcel boundaries, TMK, setbacks, and existing structures
- Floor plans, elevations, and sections at 1/4″ scale minimum
- Structural drawings with engineer's stamp (required for all new structures)
- Energy conservation calculations (Hawaii energy code compliance)
- Grading and drainage plan if applicable
- Wastewater system approval from DOH if not connecting to county sewer
Hawaii County has moved toward accepting digital submissions for many project types, but in-person submission and hard-copy check sets remain the norm for complex projects. Confirm current submission requirements with the office before preparing your package.
Plan check: standard vs. express
Standard plan check in Hawaii County runs 6–12 weeks for residential projects and longer for commercial. The County offers an Express Plan Review program for eligible projects — primarily single-family residences under a certain valuation threshold and pre-approved standard plans. Express review targets a 5-business-day turnaround and carries a premium fee (typically 50% above the standard plan check fee).
Structural engineering review is conducted by the County's engineering staff, not contracted out. Comments are issued in writing and must be addressed in a revised submission. Multiple comment rounds are common on projects with non-standard structural systems or site conditions.
Lava zone classification: the Big Island-specific requirement
Every parcel on the Big Island has a lava zone classification (Lava Zone 1 through 9, with Zone 1 being the highest hazard). The classification is issued by the USGS Hawaiian Volcano Observatory and adopted by Hawaii County for use in construction requirements and insurance eligibility determinations.
For building permits, lava zone affects:
- Foundation requirements: Lava Zones 1 and 2 require pier or post-and-beam foundations capable of surviving lava flow impact; slab-on-grade may not be approved in highest-hazard zones
- Utility connections: Some utilities (County water in particular) are not extended to Lava Zone 1 and 2 areas — projects must include water catchment or tank systems
- Insurance availability: Standard homeowners insurance is difficult or impossible to obtain in Lava Zone 1 and 2; this affects financing, which affects permit valuation and project feasibility
- Access and evacuation: Projects in high-hazard zones may require documentation of emergency access routes
Puna (lower East Rift Zone) is the area most affected by Lava Zone 1 and 2 classifications. The 2018 Kilauea eruption significantly changed the landscape in lower Puna — some areas that previously had County infrastructure no longer have road or utility access. Verify current conditions with Hawaii County Public Works before designing any project in the Puna district.
Key code differences from Oahu
Hawaii County uses its own zoning code under the Hawaii County Code, not ROH Chapter 21. The district designations are different — RS (Residential Single-Family), RA (Residential Agricultural), A (Agricultural), ML (Industrial Limited), and others. Don't apply Oahu LUO standards to Big Island parcels.
Much of the Big Island is in ASCE 7 Wind Exposure Category D due to coastal terrain. Design wind speeds in the Kohala and Kona areas are higher than standard residential assumptions. Structural engineers familiar with Oahu wind loads may underspec Big Island projects.
Coastal Big Island properties, particularly on the west side, fall within salt corrosion zones that require corrosion-resistant fasteners, hardware, and framing connectors. Hawaii County plan checkers flag non-compliant hardware specifications.
A large portion of Big Island development is served by cesspools or individual wastewater systems, not county sewer. Hawaii DOH regulates wastewater systems and must approve new or modified systems. DOH approval is a prerequisite to building permit issuance.
Hawaii County has its own schedule of work exempt from permit — it is similar to, but not identical to, the Oahu exemption schedule. Agricultural structures on AG-zoned parcels have broader exemptions. Verify current exemptions with the Building Division before assuming work is exempt.
Fees
Hawaii County building permit fees are calculated based on project valuation. The fee schedule includes a base plan check fee and a separate permit issuance fee. For a new single-family residence with a construction value of $500,000, total permit fees typically run $3,000–$5,000. Commercial projects at similar valuation run higher due to additional review categories (electrical, plumbing, mechanical are separate permits in Hawaii County).
Hawaii County charges separately for each trade permit: building, electrical, plumbing, and mechanical are four separate applications and four separate inspections. Factor this into your timeline and budget — especially on projects where the trades are on different schedules.
Inspections
Inspections in Hawaii County are requested through the Building Division. The typical inspection sequence for new residential construction:
- Foundation / footing prior to pour
- Framing (rough) — structural and blocking visible
- Rough electrical, plumbing, and mechanical (separate inspectors)
- Insulation
- Drywall / lath (if applicable)
- Final — all trades, Certificate of Occupancy issued
Inspector availability is tighter on the west side (Kona office) than in Hilo. For projects in South Kohala or North Kohala, schedule inspection requests at least 48–72 hours in advance and be flexible on timing.
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