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Site Plans approved in every county in every state
| County | Permit Authority | Site Plan Notes |
|---|---|---|
| Hawaii County | Department of Public Works, Building Division — dpw.hawaiicounty.gov. Serves Hilo, Kailua-Kona, and all of the Big Island. | A site plan is required for all residential building permits under the minimum residential permit drawing guidelines. Demolition permits specifically require a site plan showing the construction to be demolished and the location and size of all structures that will remain on the lot. Projects within conservation land use districts require a Conservation District Use Permit (CDUP) from the State DLNR, and a site plan is a core component of that application. |
| Maui County | Maui County Building Division — mauicounty.gov. Serves Kahului, Maui, Molokai, and Lanai. | A site plan is required for all building permit applications, including new construction, additions, accessory structures, and demolitions. Coastal projects within the Special Management Area (SMA) must obtain an SMA permit under HRS Chapter 205A before any building permit is issued — site plans must demonstrate compliance with shoreline setback provisions, which apply to development within approximately 40 feet of the shoreline. |
| Kauai County | Kauai County Building Division — kauai.gov. Serves Lihue and all of Kauai Island. | Site plans are required for all building permit applications, including new homes, additions, accessory dwelling units, and accessory structures. Coastal development is subject to Special Management Area (SMA) permit requirements under HRS Chapter 205A — an SMA permit is the first permit required for any development in the coastal zone, and a detailed site plan showing setbacks from the shoreline is essential for that review. |
| Kalawao County | Hawaii Department of Health (state-administered); verify permit requirements directly with the State of Hawaii. | Kalawao is the smallest county in the United States and is administered by the Hawaii State Department of Health rather than a traditional county government. Any construction or development within Kalawao County should be coordinated with state agencies; site plans are still expected documentation for any structural work or land use applications. |
| City & County of Honolulu | Department of Planning & Permitting (DPP) — honolulu.gov. Serves Honolulu, Kailua, Pearl City, and all of Oahu. | All non-instant permits must be submitted digitally via the ePlans system — paper submittals are not accepted. Site plans must show lot dimensions, all permitted structures with addresses, location of proposed work, distances from all property lines, easements, and ISA (impervious surface area) calculations. Standard residential setbacks are 10 ft front and 5 ft side and rear. Fences over 6 ft and retaining walls over 30 in require a building permit; fences in flood zones or at street corners require a permit regardless of height. |