Basement finishing · Shoreline, WA
Basement Bathroom Addition in Shoreline, WA
Add a bath with proper plumbing and ejector if needed.
Basement Bathroom Addition in Shoreline, WA
Xion Build provides expert basement bathroom addition in Shoreline. As a trusted Shoreline basement finishing contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Add a bath with proper plumbing and ejector if needed.
Shoreline's mid-century homes are ideal candidates for kitchen and bath remodels, additions, and full-system modernization.
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 bathroom addition
A typical basement bathroom addition in Shoreline can involve electrical, insulation, 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 bathroom addition cost in Shoreline?
Most basement bathroom addition projects in Shoreline 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 Shoreline homeowners choose Xion Build
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.
Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.
Our Shoreline 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.
Do you offer a basement bathroom addition in Shoreline, WA?
Yes. Add a bath with proper plumbing and ejector if needed. Xion Build is a licensed, bonded, and insured basement finishing contractor serving Shoreline 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.
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 Shoreline.
Do you offer free estimates for basement bathroom addition near Shoreline?
Absolutely. We provide free, no-obligation in-home estimates throughout Shoreline and the greater Eastside, with transparent, itemized pricing.
Related services in Shoreline
Basement guest suite
Self-contained guest suites with bath.
View detailsBasement egress & code upgrades
Egress, ceiling height, and code compliance.
View detailsBasement gym & flex space
Durable, flexible spaces for gyms and play.
View detailsBasement wet bar & kitchenette
Wet bars and kitchenettes for entertaining.
View detailsWe also serve these areas