ADUs & conversions · Renton, WA

ADU Design & Permitting in Renton, WA

Plans and permits navigating local ADU rules.

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ADU Design & Permitting in Renton, WA

When Renton homeowners search for ADU design & permitting or a dependable adus & conversions contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. Plans and permits navigating local ADU rules.

Renton's mix of established and newer neighborhoods makes practical, value-driven remodels and roofing projects especially worthwhile.

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

What's included in your ADU design & permitting

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

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

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

Most ADU design & permitting projects in Renton 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 Renton homeowners choose Xion Build

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

Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.

Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.

Our Renton adus & conversions process

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.

It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.

Frequently asked questions

Are you a licensed adus & conversions 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 offer an ADU design & permitting in Renton, WA?

Yes. Plans and permits navigating local ADU rules. Xion Build is a licensed, bonded, and insured adus & conversions contractor serving Renton and the surrounding WA communities.

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

Most ADU design & permitting projects in Renton run $83,000 – $187,000, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Renton price reflects the actual project — not a guess.

Do you handle permits and inspections?

Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Renton.

How long does an ADU design & permitting take?

Timelines depend on scope and permitting. Once the plan is confirmed we give you a realistic schedule and keep you updated as the adus & conversions work progresses.

Related services in Renton

Basement ADU conversion

Turn a basement into a separate-entry dwelling unit.

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ADU kitchen & bath build-out

Compact, efficient kitchens and baths for ADUs.

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Shop & studio build

Detached shops, studios, and flex buildings.

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Detached ADU (DADU) build

Stand-alone backyard cottages from foundation to finish.

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