Home additions · Bainbridge Island, WA
Two-Story Great-Room Expansion in Bainbridge Island, WA
Vaulted, two-story living additions with structural steel where needed.
Two-Story Great-Room Expansion in Bainbridge Island, WA
Looking for two-story great-room expansion in Bainbridge Island? Xion Build is a licensed, bonded, and insured home additions contractor delivering standout results for Bainbridge Island homeowners — start to finish, under one roof. Vaulted, two-story living additions with structural steel where needed.
Bainbridge Island's wooded waterfront properties reward weather-tight envelopes, refined finishes, and crews who plan around ferry logistics and island access.
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.
What's included in your two-story great-room expansion
A typical two-story great-room expansion in Bainbridge Island can involve insulation, framing, windows, roofline tie-in — and we put the full scope in writing so you know exactly what's covered before work starts.
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.
How much does a two-story great-room expansion cost in Bainbridge Island?
Most two-story great-room expansion projects in Bainbridge Island fall between $142,000 – $414,500, 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 home additions project — so there are no surprises later.
Why Bainbridge 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.
Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Our Bainbridge Island home additions process
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.
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
How much does a two-story great-room expansion cost in Bainbridge Island?
Most two-story great-room expansion projects in Bainbridge Island run $142,000 – $414,500, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Bainbridge Island price reflects the actual project — not a guess.
What should we decide before starting a two-story great-room expansion?
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 Bainbridge 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 Bainbridge Island.
Do you offer a two-story great-room expansion in Bainbridge Island, WA?
Yes. Vaulted, two-story living additions with structural steel where needed. Xion Build is a licensed, bonded, and insured home additions contractor serving Bainbridge Island and the surrounding WA communities.
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.
Related services in Bainbridge Island
Second-story addition
Build up to add bedrooms and baths while keeping your lot.
View detailsGreat room addition
A large open living and entertaining space.
View detailsPrimary suite addition
A new primary bedroom, bath, and closet wing.
View detailsStructural tie-in & roofline match
Marry new framing and rooflines cleanly to the existing home.
View detailsWe also serve these areas