ADUs & conversions · Bothell, WA
Attached ADU Build in Bothell, WA
Attached accessory dwelling units within the home's footprint.
Attached ADU Build in Bothell, WA
Xion Build provides expert attached ADU build in Bothell. As a trusted Bothell adus & conversions contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Attached accessory dwelling units within the home's footprint.
Bothell homeowners balance growing families and aging homes — additions, basement finishes, and kitchen remodels see strong demand here.
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 Bothell can involve utilities, foundation, the kitchen and bath, permits — 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 Bothell?
Most attached ADU build projects in Bothell fall between $151,500 – $454,500, 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 Bothell homeowners choose Xion Build
Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.
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.
Our Bothell 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.
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.
Frequently asked questions
What should we decide before starting an attached ADU build?
Your budget range, must-haves, timeline, and any finishes you already love. For adus & conversions work we also review access, existing conditions, and whether permits are required in Bothell.
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 handle permits and inspections?
Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Bothell.
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 Bothell?
Absolutely. We provide free, no-obligation in-home estimates throughout Bothell and the greater Eastside, with transparent, itemized pricing.
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