Basement ADU Conversion in Woodinville, WA

Basement ADU Conversion in Woodinville, WA

When Woodinville 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.

Woodinville's wine-country estates and acreage homes are ideal for additions, outdoor living, and kitchens built for entertaining.

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

What's included in your basement ADU conversion

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

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

How much does a basement ADU conversion cost in Woodinville?

Most basement ADU conversion projects in Woodinville 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 Woodinville homeowners choose Xion Build

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

Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.

Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.

Our Woodinville adus & conversions process

Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.

It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.

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

Frequently asked questions

Related services in Woodinville

We also serve these areas