Basement Bedroom & Egress in Mercer Island, WA

Basement Bedroom & Egress in Mercer Island, WA

Xion Build provides expert basement bedroom & egress in Mercer Island. As a trusted Mercer Island basement finishing contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Code-compliant bedrooms with egress windows.

Mercer Island projects often involve sloped lots, shoreline rules, and mid-century homes that benefit from thoughtful structural and design planning.

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 bedroom & egress

A typical basement bedroom & egress in Mercer Island can involve electrical, finishes, insulation, 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 bedroom & egress cost in Mercer Island?

Most basement bedroom & egress projects in Mercer Island fall between $24,000 – $66,000, 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 Mercer Island 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.

One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.

Our Mercer Island basement finishing process

It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.

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.

Frequently asked questions

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