Home additions · Shoreline, WA
Second-Story Addition in Shoreline, WA
Build up to add bedrooms and baths while keeping your lot.
Second-Story Addition in Shoreline, WA
When Shoreline homeowners search for second-story 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. Build up to add bedrooms and baths while keeping your lot.
Shoreline's mid-century homes are ideal candidates for kitchen and bath remodels, additions, and full-system modernization.
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 Shoreline can involve windows, foundation work, framing, 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 Shoreline?
Most second-story addition projects in Shoreline 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 Shoreline homeowners choose Xion Build
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
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 Shoreline 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.
We pull the permits, schedule every trade in the right order, and protect your home, landscaping, and daily routine throughout the build.
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
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 Shoreline.
Do you offer a second-story addition in Shoreline, WA?
Yes. Build up to add bedrooms and baths while keeping your lot. Xion Build is a licensed, bonded, and insured home additions contractor serving Shoreline and the surrounding WA communities.
How much does a second-story addition cost in Shoreline?
Most second-story addition projects in Shoreline run $150,000 – $400,000, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Shoreline price reflects the actual project — not a guess.
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 Shoreline.
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