Home additions · Federal Way, WA
Second-Story Addition in Federal Way, WA
Build up to add bedrooms and baths while keeping your lot.
Second-Story Addition in Federal Way, WA
Looking for second-story addition in Federal Way? Xion Build is a licensed, bonded, and insured home additions contractor delivering standout results for Federal Way homeowners — start to finish, under one roof. Build up to add bedrooms and baths while keeping your lot.
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 second-story addition
A typical second-story addition in Federal Way can involve finishes, framing, windows, insulation — 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 second-story addition cost in Federal Way?
Most second-story addition projects in Federal Way fall between $150,000 – $400,000, 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.
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.
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.
Each phase is inspected and documented, and we keep you updated so you always know what's happening and what's next.
Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.
Frequently asked questions
Do you offer free estimates for second-story addition near Federal Way?
Absolutely. We provide free, no-obligation in-home estimates throughout Federal Way and the greater Eastside, with transparent, itemized pricing.
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.
What should we decide before starting a second-story 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.
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.
How long does a second-story 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.
Related services in Federal Way
Great room addition
A large open living and entertaining space.
View detailsFoundation & footings for additions
Engineered footings and foundations for new square footage.
View detailsStructural 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.
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