Detached ADU (DADU) Build in Newcastle, WA

Detached ADU (DADU) Build in Newcastle, WA

Xion Build provides expert detached ADU (DADU) build in Newcastle. As a trusted Newcastle adus & conversions contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Stand-alone backyard cottages from foundation to finish.

Newcastle's view homes and golf-community properties reward precise finish carpentry and remodels designed to make the most of the outlook.

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 detached ADU (DADU) build

A typical detached ADU (DADU) build in Newcastle can involve the kitchen and bath, foundation, finishes, utilities — 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 detached ADU (DADU) build cost in Newcastle?

Most detached ADU (DADU) build projects in Newcastle fall between $207,000 – $517,500, 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 Newcastle homeowners choose Xion Build

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

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

Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.

Our Newcastle adus & conversions process

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

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

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

Frequently asked questions

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