ADUs & conversions · Maple Valley, WA
Basement ADU Conversion in Maple Valley, WA
Turn a basement into a separate-entry dwelling unit.
Basement ADU Conversion in Maple Valley, WA
Looking for basement ADU conversion in Maple Valley? Xion Build is a licensed, bonded, and insured adus & conversions contractor delivering standout results for Maple Valley homeowners — start to finish, under one roof. Turn a basement into a separate-entry dwelling unit.
Maple Valley's family neighborhoods see strong demand for additions, basement finishes, and kitchen remodels that grow with the household.
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 Maple Valley can involve permits, finishes, foundation, 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 Maple Valley?
Most basement ADU conversion projects in Maple Valley fall between $87,000 – $196,000, 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 Maple Valley 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.
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Our Maple Valley 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.
We pull the permits, schedule every trade in the right order, and protect your home, landscaping, and daily routine throughout the build.
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
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.
What should we decide before starting a basement ADU conversion?
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 Maple Valley.
Do you offer a basement ADU conversion in Maple Valley, WA?
Yes. Turn a basement into a separate-entry dwelling unit. Xion Build is a licensed, bonded, and insured adus & conversions contractor serving Maple Valley and the surrounding WA communities.
Do you offer free estimates for basement ADU conversion near Maple Valley?
Absolutely. We provide free, no-obligation in-home estimates throughout Maple Valley and the greater Eastside, with transparent, itemized pricing.
How much does a basement ADU conversion cost in Maple Valley?
Most basement ADU conversion projects in Maple Valley run $87,000 – $196,000, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Maple Valley price reflects the actual project — not a guess.
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