ADU Design & Permitting in Shoreline, WA

ADU Design & Permitting in Shoreline, WA

Xion Build provides expert ADU design & permitting in Shoreline. As a trusted Shoreline adus & conversions contractor, we manage design, materials, permits, and every trade in-house so your project stays on schedule and on budget. Plans and permits navigating local ADU rules.

Shoreline's mid-century homes are ideal candidates for kitchen and bath remodels, additions, and full-system modernization.

You get a single point of contact, licensed and insured trades, and clear communication from the first sketch to the final walkthrough.

What's included in your ADU design & permitting

A typical ADU design & permitting in Shoreline can involve the kitchen and bath, foundation, utilities, permits — and we put the full scope in writing so you know exactly what's covered before work starts.

We write scope in plain terms: what we'll do, the materials, the sequence, and how any surprises are handled if something is uncovered.

How much does an ADU design & permitting cost in Shoreline?

Most ADU design & permitting projects in Shoreline fall between $83,000 – $187,000, 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 adus & conversions project — so there are no surprises later.

Why Shoreline homeowners choose Xion Build

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.

Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.

Our Shoreline adus & conversions process

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.

Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.

Frequently asked questions

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