Home additions · Sammamish, WA
Garage Addition in Sammamish, WA
Attached or detached garages framed, wired, and finished.
Garage Addition in Sammamish, WA
Looking for garage addition in Sammamish? Xion Build is a licensed, bonded, and insured home additions contractor delivering standout results for Sammamish homeowners — start to finish, under one roof. Attached or detached garages framed, wired, and finished.
Sammamish plateau homes are often large and family-focused, where additions, kitchens, and outdoor living spaces deliver the most lasting value.
A home addition lives or dies on the connection to the existing house — foundation, framing, and rooflines have to marry seamlessly so the new space feels original.
What's included in your garage addition
A typical garage addition in Sammamish can involve foundation work, insulation, roofline tie-in, windows — and we put the full scope in writing so you know exactly what's covered before work starts.
From room additions and bump-outs to second stories and full primary suites, we handle structural engineering and permits up front so there are no surprises.
How much does a garage addition cost in Sammamish?
Most garage addition projects in Sammamish fall between $49,500 – $149,000, 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 home additions project — so there are no surprises later.
Why Sammamish 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 Sammamish home additions 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 long does a garage 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 home additions work progresses.
Are you a licensed home additions 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 Sammamish.
What should we decide before starting a garage addition?
Your budget range, must-haves, timeline, and any finishes you already love. For home additions work we also review access, existing conditions, and whether permits are required in Sammamish.
Do you offer a garage addition in Sammamish, WA?
Yes. Attached or detached garages framed, wired, and finished. Xion Build is a licensed, bonded, and insured home additions contractor serving Sammamish and the surrounding WA communities.
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Dining room expansion
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View detailsPrimary suite addition
A new primary bedroom, bath, and closet wing.
View detailsSecond-story addition
Build up to add bedrooms and baths while keeping your lot.
View detailsFoundation & footings for additions
Engineered footings and foundations for new square footage.
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