Foundation & concrete · Mercer Island, WA
Foundation Drainage & French Drains in Mercer Island, WA
Footing drains and French drains to manage water.
Foundation Drainage & French Drains in Mercer Island, WA
When Mercer Island homeowners search for foundation drainage & French drains or a dependable foundation & concrete contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. Footing drains and French drains to manage water.
Mercer Island projects often involve sloped lots, shoreline rules, and mid-century homes that benefit from thoughtful structural and design planning.
Drainage and waterproofing are scoped alongside the structure so the repair actually lasts.
What's included in your foundation drainage & French drains
A typical foundation drainage & French drains in Mercer Island can involve excavation, waterproofing, rebar, footings — and we put the full scope in writing so you know exactly what's covered before work starts.
Foundation and concrete work sets everything above it — we engineer for the soil, slope, and water on your specific lot.
How much does a foundation drainage & French drains cost in Mercer Island?
Most foundation drainage & French drains projects in Mercer Island fall between $6,400 – $32,000, 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 foundation & concrete project — so there are no surprises later.
Why Mercer Island homeowners choose Xion Build
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.
Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.
Our Mercer Island foundation & concrete 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.
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 a foundation drainage & French drains cost in Mercer Island?
Most foundation drainage & French drains projects in Mercer Island run $6,400 – $32,000, 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.
How long does a foundation drainage & French drains take?
Timelines depend on scope and permitting. Once the plan is confirmed we give you a realistic schedule and keep you updated as the foundation & concrete work progresses.
Are you a licensed foundation & concrete 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.
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 a foundation drainage & French drains in Mercer Island, WA?
Yes. Footing drains and French drains to manage water. Xion Build is a licensed, bonded, and insured foundation & concrete contractor serving Mercer Island and the surrounding WA communities.
Related services in Mercer Island
Foundation underpinning
Pier and underpinning systems to stabilize foundations.
View detailsNew foundation & footings
Footings, stem walls, and foundations for additions.
View detailsCrawlspace & basement waterproofing
Drainage, sump, and vapor barriers to keep below-grade dry.
View detailsEgress window cut-in
Cut and frame egress openings in foundation walls.
View detailsWe also serve these areas