HPM Hawaii offers ADU models statewide, from 416 to 1,672 sq. ft., with pre-approved options for Hawaiʻi Island. They guide homeowners through design, permitting, and construction while navigating each county's unique ADU regulations.
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Fabmac Homes builds custom manufactured homes on Maui with 20+ years experience. Factory-built at Clayton Homes, shipped to Maui in 6–8 months. Features include hurricane-rated construction, energy efficiency, and permanent foundations. Ideal for ADUs, granny flats, or in-law suites.
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Affordable Portable Housing Hawaii is a design-build company specializing in shipping container homes, offices, and structures. They offer drafting, permits, and full project development with financing options available.
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Maui Eco Built offers prefab & custom ADUs, granny flats, and homes on Maui. Panelized construction cuts build time. Structures range from permit-exempt under 200 sq ft to 3,000 sq ft homes. Design, permits & site planning available.
read moreSearching for top Prefab / Modular ADU ADU Contractors in Hawaii? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Prefab / Modular ADU ADU Contractor in Hawaii ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Prefab / Modular ADU professionals can guide you through every step.
Hawaii homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Prefab / Modular ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Prefab / Modular ADU ADU Contractors in Hawaii, and get started today.