Basement ADU Conversion in Gig Harbor, WA

Basement ADU Conversion in Gig Harbor, WA

When Gig Harbor homeowners search for basement ADU conversion or a dependable adus & conversions contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. Turn a basement into a separate-entry dwelling unit.

Gig Harbor's waterfront homes and view lots call for decks, additions, and kitchens built to make the most of the harbor and the light.

We write scope in plain terms: what we'll do, the materials, the sequence, and how any surprises are handled if something is uncovered.

What's included in your basement ADU conversion

A typical basement ADU conversion in Gig Harbor can involve framing, finishes, the kitchen and bath, permits — and we put the full scope in writing so you know exactly what's covered before work starts.

You get a single point of contact, licensed and insured trades, and clear communication from the first sketch to the final walkthrough.

How much does a basement ADU conversion cost in Gig Harbor?

Most basement ADU conversion projects in Gig Harbor fall between $100,500 – $225,500, depending on the size of the space, the finishes you choose, and the condition of what's already there.

Because every home is different, we don't quote final numbers sight unseen. After a free in-home consultation you get a detailed, itemized estimate tied to your actual adus & conversions project — so there are no surprises later.

Why Gig Harbor homeowners choose Xion Build

Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.

One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.

Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.

Our Gig Harbor adus & conversions process

We pull the permits, schedule every trade in the right order, and protect your home, landscaping, and daily routine throughout the build.

Each phase is inspected and documented, and we keep you updated so you always know what's happening and what's next.

Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.

Frequently asked questions

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