Home additions · Seattle, WA
Great Room Addition in Seattle, WA
A large open living and entertaining space.
Great Room Addition in Seattle, WA
Xion Build provides expert great room addition in Seattle. As a trusted Seattle home additions contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. A large open living and entertaining space.
From Laurelhurst to Queen Anne, Seattle's older homes often need structural care alongside the kitchen, bath, and addition work that modernizes them.
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 great room addition
A typical great room addition in Seattle can involve finishes, foundation work, insulation, roofline tie-in — 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 great room addition cost in Seattle?
Most great room addition projects in Seattle 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 Seattle homeowners choose Xion Build
Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.
Our Seattle 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.
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
How much does a great room addition cost in Seattle?
Most great room addition projects in Seattle run $146,500 – $426,500, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Seattle 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 great room addition in Seattle, WA?
Yes. A large open living and entertaining space. Xion Build is a licensed, bonded, and insured home additions contractor serving Seattle and the surrounding WA communities.
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 Seattle.
Do you offer free estimates for great room addition near Seattle?
Absolutely. We provide free, no-obligation in-home estimates throughout Seattle and the greater Eastside, with transparent, itemized pricing.
Related services in Seattle
Structural tie-in & roofline match
Marry new framing and rooflines cleanly to the existing home.
View detailsBump-out addition
Small cantilevered bump-outs to expand kitchens, baths, or dining.
View detailsRoom addition
Add a bedroom, office, or living space tied seamlessly into the home.
View detailsGarage addition
Attached or detached garages framed, wired, and finished.
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