ADUs & conversions · Bainbridge Island, WA
Attached ADU Build in Bainbridge Island, WA
Attached accessory dwelling units within the home's footprint.
Attached ADU Build in Bainbridge Island, WA
Looking for attached ADU build in Bainbridge Island? Xion Build is a licensed, bonded, and insured adus & conversions contractor delivering standout results for Bainbridge Island homeowners — start to finish, under one roof. Attached accessory dwelling units within the home's footprint.
Bainbridge Island's wooded waterfront properties reward weather-tight envelopes, refined finishes, and crews who plan around ferry logistics and island access.
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 Bainbridge Island can involve foundation, the kitchen and bath, 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 an attached ADU build cost in Bainbridge Island?
Most attached ADU build projects in Bainbridge Island 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 Bainbridge Island homeowners choose Xion Build
Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.
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.
Our Bainbridge Island 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.
Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.
Frequently asked questions
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.
Do you offer free estimates for attached ADU build near Bainbridge Island?
Absolutely. We provide free, no-obligation in-home estimates throughout Bainbridge Island and the greater Eastside, with transparent, itemized pricing.
How much does an attached ADU build cost in Bainbridge Island?
Most attached ADU build projects in Bainbridge Island 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 Bainbridge Island 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 Bainbridge Island.
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.
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