Home additions · Bellevue, WA
Second-Story Addition in Bellevue, WA
Build up to add bedrooms and baths while keeping your lot.
Second-Story Addition in Bellevue, WA
Xion Build provides expert second-story addition in Bellevue. As a trusted Bellevue home additions contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Build up to add bedrooms and baths while keeping your lot.
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 second-story addition
A typical second-story addition in Bellevue can involve foundation work, framing, windows, insulation — 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 second-story addition cost in Bellevue?
Most second-story addition projects in Bellevue fall between $172,500 – $460,000, 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 Bellevue homeowners choose Xion Build
Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.
Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.
Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.
Our Bellevue home additions process
Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.
It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.
Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.
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.
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.
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 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.
How much does a second-story addition cost in Bellevue?
Most second-story addition projects in Bellevue run $172,500 – $460,000, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Bellevue price reflects the actual project — not a guess.
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