Windows & doors · Mercer Island, WA
Egress Window Installation in Mercer Island, WA
Code-compliant egress windows and wells for basements.
Egress Window Installation in Mercer Island, WA
Looking for egress window installation in Mercer Island? Xion Build is a licensed, bonded, and insured windows & doors contractor delivering standout results for Mercer Island homeowners — start to finish, under one roof. Code-compliant egress windows and wells for basements.
Mercer Island projects often involve sloped lots, shoreline rules, and mid-century homes that benefit from thoughtful structural and design planning.
From energy-efficient replacement windows to patio sliders, entry doors, and folding glass walls, we install for a weather-tight, draft-free fit.
What's included in your egress window installation
A typical egress window installation in Mercer Island can involve air sealing, hardware, trim, flashing — and we put the full scope in writing so you know exactly what's covered before work starts.
Windows and doors are where comfort, energy bills, and curb appeal meet — proper flashing and air sealing matter as much as the units themselves.
How much does an egress window installation cost in Mercer Island?
Most egress window installation projects in Mercer Island fall between $7,700 – $25,500, 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 windows & doors project — so there are no surprises later.
Why Mercer Island homeowners choose Xion Build
Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.
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.
Our Mercer Island windows & doors process
It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.
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 much does an egress window installation cost in Mercer Island?
Most egress window installation projects in Mercer Island run $7,700 – $25,500, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Mercer Island price reflects the actual project — not a guess.
What should we decide before starting an egress window installation?
Your budget range, must-haves, timeline, and any finishes you already love. For windows & doors work we also review access, existing conditions, and whether permits are required in Mercer Island.
Do you handle permits and inspections?
Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Mercer Island.
Do you offer free estimates for egress window installation near Mercer Island?
Absolutely. We provide free, no-obligation in-home estimates throughout Mercer Island and the greater Eastside, with transparent, itemized pricing.
Do you offer an egress window installation in Mercer Island, WA?
Yes. Code-compliant egress windows and wells for basements. Xion Build is a licensed, bonded, and insured windows & doors contractor serving Mercer Island and the surrounding WA communities.
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Folding glass walls that open rooms to the outdoors.
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