ADUs & conversions · Mercer Island, WA
Shop & Studio Build in Mercer Island, WA
Detached shops, studios, and flex buildings.
Shop & Studio Build in Mercer Island, WA
Looking for shop & studio build in Mercer Island? Xion Build is a licensed, bonded, and insured adus & conversions contractor delivering standout results for Mercer Island homeowners — start to finish, under one roof. Detached shops, studios, and flex buildings.
Mercer Island projects often involve sloped lots, shoreline rules, and mid-century homes that benefit from thoughtful structural and design planning.
We write scope in plain terms: what we'll do, the materials, the sequence, and how any surprises are handled if something is uncovered.
What's included in your shop & studio build
A typical shop & studio build in Mercer Island can involve the kitchen and bath, permits, finishes, utilities — and we put the full scope in writing so you know exactly what's covered before work starts.
You get a single point of contact, licensed and insured trades, and clear communication from the first sketch to the final walkthrough.
How much does a shop & studio build cost in Mercer Island?
Most shop & studio build projects in Mercer Island fall between $103,000 – $231,500, 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 Mercer Island homeowners choose Xion Build
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.
Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.
Our Mercer Island adus & conversions process
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.
Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.
Frequently asked questions
What should we decide before starting a shop & studio 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 Mercer Island.
How long does a shop & studio 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 Mercer Island.
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 a shop & studio build cost in Mercer Island?
Most shop & studio build projects in Mercer Island run $103,000 – $231,500, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Mercer Island price reflects the actual project — not a guess.
Related services in Mercer Island
ADU utility & meter separation
Separate utilities and metering for rentals.
View detailsBasement ADU conversion
Turn a basement into a separate-entry dwelling unit.
View detailsAttached ADU build
Attached accessory dwelling units within the home's footprint.
View detailsDetached ADU (DADU) build
Stand-alone backyard cottages from foundation to finish.
View detailsWe also serve these areas