Exterior Trim & Corner Boards in Mercer Island, WA

Exterior Trim & Corner Boards in Mercer Island, WA

Xion Build provides expert exterior trim & corner boards in Mercer Island. As a trusted Mercer Island siding & exterior contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Trim, corners, and detailing for a finished exterior.

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

Siding protects the entire home — the rainscreen, flashing, and weather-resistive barrier behind it are what keep moisture out in the PNW.

What's included in your exterior trim & corner boards

A typical exterior trim & corner boards in Mercer Island can involve corner boards, house wrap, flashing, the rainscreen — and we put the full scope in writing so you know exactly what's covered before work starts.

From James Hardie fiber cement to cedar, engineered lap, and stone veneer, we re-side for protection and lasting curb appeal.

How much does an exterior trim & corner boards cost in Mercer Island?

Most exterior trim & corner boards projects in Mercer Island fall between $14,000 – $41,500, 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 siding & exterior project — so there are no surprises later.

Why Mercer Island homeowners choose Xion Build

Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.

Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.

Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.

Our Mercer Island siding & exterior 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.

Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.

Frequently asked questions

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