Call (808) 600-5065Get My Free Estimate
    WDC - Design. Build. Remodel.
    Interior finishes and remodeling design example
    Licensed & Insured — Lic. CT-39936
    Led by a licensed contractor with 25 years of experience in Hawaii

    Room Additions on Oahu

    More space for the home you already have. We design the addition, handle the permits and build it.

    Get My Free EstimateCall (808) 600-5065

    We'll call you back the same business day.

    25 yrs
    Led by a Licensed Contractor with 25 Years of Experience in Hawaii
    7 days
    Kapolei Showroom Open Every Week
    Why Choose Us

    Planned with the home you have

    Our design-build model brings design, permits and construction under one team.

    1

    Designed with your home

    We plan the addition around your existing layout, roof and finishes.

    2

    Permits handled

    We handle the building permits your addition needs.

    3

    One team

    Design and construction stay with one licensed contractor from start to finish.

    4

    Licensed trades

    Electrical and plumbing are done by licensed trade partners under our supervision.

    5

    Licensed contractor

    Hawaii general building contractor licence CT-39936.

    6

    Finishes in person

    Choose flooring, cabinets and fixtures at our Kapolei showroom.

    Permits for an addition

    A room addition needs a building permit. DPP requires a building permit to construct, alter or demolish any structure, and you can ask DPP for a zoning verification if you are unsure what applies to your lot.

    How It Works

    Our Process

    From the first call to the final walkthrough.

    01

    Site visit

    We look at your lot and your home.

    02

    Design and permits

    Plans and the building permit.

    03

    Build

    Our team builds the addition.

    04

    Walkthrough

    We walk the finished work with you.

    Reviews

    What Our Clients Say

    Our reviews live on Google, where they stay current and verified.

    Read our Google reviews
    FAQ

    Room addition questions

    Every addition is quoted after a site visit; your written estimate is the price that counts.

    Yes. DPP requires a building permit to construct or alter any structure. We handle the building permits your addition needs.

    Not always. If the new space has its own kitchen, bedroom and bathroom, it may be an ADU, which has its own DPP pre-check. See our ADU page.

    It depends on the scope and the permit. Your written estimate sets out the schedule.

    Ready to Add Space?

    Tell us what you want to add and we'll set up a site visit.

    Get My Free EstimateCall (808) 600-5065
    We'll call you back the same business day.✓ No Pressure✓ Licensed & Insured

    Hawaii Contractor Licence CT-39936