Basement finishing · Mukilteo, WA
Basement Bathroom Addition in Mukilteo, WA
Add a bath with proper plumbing and ejector if needed.
Basement Bathroom Addition in Mukilteo, WA
Looking for basement bathroom addition in Mukilteo? Xion Build is a licensed, bonded, and insured basement finishing contractor delivering standout results for Mukilteo homeowners — start to finish, under one roof. Add a bath with proper plumbing and ejector if needed.
Mukilteo's bluff and waterfront homes call for weather-tight exteriors, decks, and remodels designed around the Sound views.
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 Mukilteo can involve insulation, egress, framing, finishes — 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 Mukilteo?
Most basement bathroom addition projects in Mukilteo 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 Mukilteo homeowners choose Xion Build
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.
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
Our Mukilteo 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.
Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.
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
What should we decide before starting a basement bathroom addition?
Your budget range, must-haves, timeline, and any finishes you already love. For basement finishing work we also review access, existing conditions, and whether permits are required in Mukilteo.
Do you handle permits and inspections?
Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Mukilteo.
How much does a basement bathroom addition cost in Mukilteo?
Most basement bathroom addition projects in Mukilteo 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 Mukilteo price reflects the actual project — not a guess.
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.
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.
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