Home additions · Kent, WA
Addition Design & Engineering in Kent, WA
Architectural plans and structural engineering for additions.
Addition Design & Engineering in Kent, WA
Looking for addition design & engineering in Kent? Xion Build is a licensed, bonded, and insured home additions contractor delivering standout results for Kent homeowners — start to finish, under one roof. Architectural plans and structural engineering for additions.
Kent homeowners get strong returns from durable, practical remodels — kitchens, baths, roofing, and exterior work that hold up for the long run.
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 addition design & engineering
A typical addition design & engineering in Kent can involve windows, foundation work, insulation, finishes — 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 an addition design & engineering cost in Kent?
Most addition design & engineering projects in Kent fall between $36,500 – $109,000, 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 Kent 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.
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.
Our Kent 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.
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 addition design & engineering near Kent?
Absolutely. We provide free, no-obligation in-home estimates throughout Kent and the greater Eastside, with transparent, itemized pricing.
How long does an addition design & engineering 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.
How much does an addition design & engineering cost in Kent?
Most addition design & engineering projects in Kent run $36,500 – $109,000, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Kent price reflects the actual project — not a guess.
Do you offer an addition design & engineering in Kent, WA?
Yes. Architectural plans and structural engineering for additions. Xion Build is a licensed, bonded, and insured home additions contractor serving Kent and the surrounding WA communities.
What should we decide before starting an addition design & engineering?
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 Kent.
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A new primary bedroom, bath, and closet wing.
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Engineered footings and foundations for new square footage.
View detailsGreat room addition
A large open living and entertaining space.
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