Basement finishing · Maple Valley, WA
Basement Bathroom Addition in Maple Valley, WA
Add a bath with proper plumbing and ejector if needed.
Basement Bathroom Addition in Maple Valley, WA
Looking for basement bathroom addition in Maple Valley? Xion Build is a licensed, bonded, and insured basement finishing contractor delivering standout results for Maple Valley homeowners — start to finish, under one roof. Add a bath with proper plumbing and ejector if needed.
Maple Valley's family neighborhoods see strong demand for additions, basement finishes, and kitchen remodels that grow with the household.
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 basement bathroom addition
A typical basement bathroom addition in Maple Valley can involve finishes, electrical, framing, egress — 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 basement bathroom addition cost in Maple Valley?
Most basement bathroom addition projects in Maple Valley fall between $39,000 – $97,000, 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 basement finishing project — so there are no surprises later.
Why Maple Valley homeowners choose Xion Build
Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.
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 Maple Valley basement finishing 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.
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
Frequently asked questions
How long does a basement bathroom addition take?
Timelines depend on scope and permitting. Once the plan is confirmed we give you a realistic schedule and keep you updated as the basement finishing work progresses.
How much does a basement bathroom addition cost in Maple Valley?
Most basement bathroom addition projects in Maple Valley run $39,000 – $97,000, 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.
Do you offer free estimates for basement bathroom addition near Maple Valley?
Absolutely. We provide free, no-obligation in-home estimates throughout Maple Valley and the greater Eastside, with transparent, itemized pricing.
Do you offer a basement bathroom addition in Maple Valley, WA?
Yes. Add a bath with proper plumbing and ejector if needed. Xion Build is a licensed, bonded, and insured basement finishing contractor serving Maple Valley and the surrounding WA communities.
Are you a licensed basement finishing 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.
Related services in Maple Valley
Basement bedroom & egress
Code-compliant bedrooms with egress windows.
View detailsBasement ceiling & lighting
Drop and drywall ceilings with recessed lighting.
View detailsBasement egress & code upgrades
Egress, ceiling height, and code compliance.
View detailsHome theater & media room
Acoustically treated media and theater rooms.
View detailsWe also serve these areas