Home additions · Mukilteo, WA
Great Room Addition in Mukilteo, WA
A large open living and entertaining space.
Great Room Addition in Mukilteo, WA
Xion Build provides expert great room addition in Mukilteo. As a trusted Mukilteo 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.
Mukilteo's bluff and waterfront homes call for weather-tight exteriors, decks, and remodels designed around the Sound views.
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 Mukilteo can involve finishes, foundation work, 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 Mukilteo?
Most great room addition projects in Mukilteo 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 Mukilteo 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 Mukilteo home additions process
It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.
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.
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 Mukilteo.
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 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 Mukilteo.
Do you offer a great room addition in Mukilteo, WA?
Yes. A large open living and entertaining space. Xion Build is a licensed, bonded, and insured home additions contractor serving Mukilteo and the surrounding WA communities.
Related services in Mukilteo
Second-story addition
Build up to add bedrooms and baths while keeping your lot.
View detailsDining room expansion
Expand or add a formal dining space for gatherings.
View detailsBump-out addition
Small cantilevered bump-outs to expand kitchens, baths, or dining.
View detailsFoundation & footings for additions
Engineered footings and foundations for new square footage.
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