ADUs & conversions · Woodinville, WA
Attached ADU Build in Woodinville, WA
Attached accessory dwelling units within the home's footprint.
Attached ADU Build in Woodinville, WA
When Woodinville homeowners search for attached ADU build or a dependable adus & conversions contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. Attached accessory dwelling units within the home's footprint.
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 attached ADU build
A typical attached ADU build in Woodinville can involve foundation, permits, framing, 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 an attached ADU build cost in Woodinville?
Most attached ADU build projects in Woodinville fall between $174,000 – $522,500, 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
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.
Our Woodinville adus & conversions process
It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.
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.
Frequently asked questions
How long does an attached ADU build take?
Timelines depend on scope and permitting. Once the plan is confirmed we give you a realistic schedule and keep you updated as the adus & conversions work progresses.
Do you offer free estimates for attached ADU build near Woodinville?
Absolutely. We provide free, no-obligation in-home estimates throughout Woodinville and the greater Eastside, with transparent, itemized pricing.
Are you a licensed adus & conversions contractor?
Yes — Xion Build is licensed, bonded, and insured in WA. Every project is built to meet or exceed code and is backed by a written warranty.
How much does an attached ADU build cost in Woodinville?
Most attached ADU build projects in Woodinville run $174,000 – $522,500, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Woodinville price reflects the actual project — not a guess.
Do you handle permits and inspections?
Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Woodinville.
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