Attached ADU Build in Kirkland, WA

Attached ADU Build in Kirkland, WA

When Kirkland homeowners search for attached ADU build or a dependable adus & conversions contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. Attached accessory dwelling units within the home's footprint.

Kirkland's waterfront cottages and hillside homes mix tight lots with big design ambitions — we plan access, staging, and finishes accordingly.

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 attached ADU build

A typical attached ADU build in Kirkland can involve framing, the kitchen and bath, foundation, permits — 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 attached ADU build cost in Kirkland?

Most attached ADU build projects in Kirkland fall between $174,000 – $522,500, 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 Kirkland homeowners choose Xion Build

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

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 Kirkland 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.

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

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

Related services in Kirkland

We also serve these areas