ADU Locator

1 Best ADU Builders in Kihei, Hawaii

Verified ADU contractors and builders in Kihei, HI

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Adx Construction, Inc.

Specializing in accessory dwelling unit construction on Maui's south side, this Kihei-based contractor helps homeowners add rental income or multi-generational living spaces to their properties. From design consultation through completion, they manage the full ADU building process to maximize your investment.

+1 808-344-8892
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Frequently Asked Questions — ADU Builders in Kihei

How much does it cost to hire an ADU builder in Kihei?

ADU construction costs in Kihei, Hawaii vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Kihei to get accurate quotes for your specific project.

How long does it take to build an ADU in Kihei?

In Kihei, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Hawaii local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Kihei?

Yes, a building permit is required for ADU construction in Kihei, Hawaii. Your ADU builder will typically handle the permit application as part of their service. Hawaii has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Kihei?

Common ADU types in Kihei include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Kihei ADU builder can advise on what's allowed on your specific parcel.