Home additions · Bellevue, WA
Two-Story Great-Room Expansion in Bellevue, WA
Vaulted, two-story living additions with structural steel where needed.
Two-Story Great-Room Expansion in Bellevue, WA
Looking for two-story great-room expansion in Bellevue? Xion Build is a licensed, bonded, and insured home additions contractor delivering standout results for Bellevue homeowners — start to finish, under one roof. Vaulted, two-story living additions with structural steel where needed.
From Bridle Trails to West Bellevue, Bellevue homeowners invest in kitchens, baths, and additions that match a high bar for finish quality and durability.
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 Bellevue can involve windows, insulation, finishes, foundation work — 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 Bellevue?
Most two-story great-room expansion projects in Bellevue 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 Bellevue homeowners choose Xion Build
Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.
Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Our Bellevue home additions process
Each phase is inspected and documented, and we keep you updated so you always know what's happening and what's next.
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.
Frequently asked questions
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 Bellevue.
How much does a two-story great-room expansion cost in Bellevue?
Most two-story great-room expansion projects in Bellevue 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 Bellevue price reflects the actual project — not a guess.
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 offer a two-story great-room expansion in Bellevue, WA?
Yes. Vaulted, two-story living additions with structural steel where needed. Xion Build is a licensed, bonded, and insured home additions contractor serving Bellevue and the surrounding WA communities.
Do you handle permits and inspections?
Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Bellevue.
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In-law suite addition
Self-contained suite with bedroom, bath, and kitchenette.
View detailsBump-out addition
Small cantilevered bump-outs to expand kitchens, baths, or dining.
View detailsStructural tie-in & roofline match
Marry new framing and rooflines cleanly to the existing home.
View detailsFoundation & footings for additions
Engineered footings and foundations for new square footage.
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