Adding square footage or building an ADU is one of the smartest moves an Oʻahu homeowner can make — for family space or rental income. IBBUILDERS handles it from design and DPP permitting through final inspection, so you’re not stuck managing a designer, a permit runner, and a builder separately.
What we build
- Room additions and second-story additions
- ADUs and ohana / accessory dwelling units
- Garage conversions and enclosures
- Kitchen and primary-suite expansions
- Full design, engineering, and DPP permitting
We handle the permitting maze
Oʻahu permitting and DPP timelines are where most projects bog down. We manage the plans, engineering, and approvals up front so the build starts clean — and we tell you honest timelines, not wishful ones.
Income that pays you back
A well-built ohana unit can offset your mortgage for years. We build to code, to last, and to rent — with the same warranty and clean process as everything else we do.
Related Reading
ADUs & Ohana Units on Oʻahu — 2026 Guide
From our Learning Center →
Your Build, Step by Step
From our Learning Center →
Ready to start? Get a free consultation — call or text (808) 840-3193, and we’ll walk your project with you.