Home additions · Federal Way, WA
Great Room Addition in Federal Way, WA
A large open living and entertaining space.
Great Room Addition in Federal Way, WA
When Federal Way homeowners search for great room addition or a dependable home additions contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. A large open living and entertaining space.
Federal Way's established neighborhoods reward durable, value-driven remodels, roofing, and exterior work.
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 Federal Way can involve finishes, framing, insulation, 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 great room addition cost in Federal Way?
Most great room addition projects in Federal Way fall between $127,000 – $371,000, 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 Federal Way homeowners choose Xion Build
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.
Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.
Our Federal Way home additions process
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
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.
Frequently asked questions
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 Federal Way.
Do you offer a great room addition in Federal Way, WA?
Yes. A large open living and entertaining space. Xion Build is a licensed, bonded, and insured home additions contractor serving Federal Way and the surrounding WA communities.
Do you offer free estimates for great room addition near Federal Way?
Absolutely. We provide free, no-obligation in-home estimates throughout Federal Way and the greater Eastside, with transparent, itemized pricing.
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 Federal Way.
Related services in Federal Way
Sunroom & four-season room
Insulated, conditioned sunrooms usable year-round.
View detailsSecond-story addition
Build up to add bedrooms and baths while keeping your lot.
View detailsBump-out addition
Small cantilevered bump-outs to expand kitchens, baths, or dining.
View detailsTwo-story great-room expansion
Vaulted, two-story living additions with structural steel where needed.
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