ADUs & conversions · Medina, WA
Basement ADU Conversion in Medina, WA
Turn a basement into a separate-entry dwelling unit.
Basement ADU Conversion in Medina, WA
Xion Build provides expert basement ADU conversion in Medina. As a trusted Medina adus & conversions contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Turn a basement into a separate-entry dwelling unit.
Medina's waterfront estates demand discreet crews, architectural-grade finishes, and a builder who protects mature landscaping and lake views throughout the project.
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 basement ADU conversion
A typical basement ADU conversion in Medina can involve utilities, permits, finishes, framing — 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 basement ADU conversion cost in Medina?
Most basement ADU conversion projects in Medina fall between $113,500 – $255,000, 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 Medina homeowners choose Xion Build
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.
Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.
Our Medina 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.
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
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
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 long does a basement ADU conversion 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.
How much does a basement ADU conversion cost in Medina?
Most basement ADU conversion projects in Medina run $113,500 – $255,000, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Medina 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 Medina.
Do you offer a basement ADU conversion in Medina, WA?
Yes. Turn a basement into a separate-entry dwelling unit. Xion Build is a licensed, bonded, and insured adus & conversions contractor serving Medina and the surrounding WA communities.
Related services in Medina
Garage conversion to ADU
Convert a garage into a legal, livable ADU.
View detailsShop & studio build
Detached shops, studios, and flex buildings.
View detailsDetached ADU (DADU) build
Stand-alone backyard cottages from foundation to finish.
View detailsIn-law & multigenerational suite
Self-contained suites for extended family.
View detailsWe also serve these areas