Home additions · Bellevue, WA
Great Room Addition in Bellevue, WA
A large open living and entertaining space.
Great Room Addition in Bellevue, WA
Looking for great room addition 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. A large open living and entertaining space.
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 great room addition
A typical great room addition in Bellevue can involve finishes, foundation work, 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 great room addition cost in Bellevue?
Most great room addition projects in Bellevue fall between $146,500 – $426,500, 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
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.
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
Our Bellevue home additions process
We pull the permits, schedule every trade in the right order, and protect your home, landscaping, and daily routine throughout the build.
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.
Frequently asked questions
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.
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 great room addition in Bellevue, WA?
Yes. A large open living and entertaining space. Xion Build is a licensed, bonded, and insured home additions contractor serving Bellevue and the surrounding WA communities.
How long does a great room 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.
What should we decide before starting a great room 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 Bellevue.
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A new primary bedroom, bath, and closet wing.
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