# ADU Craft Seattle

> ADU builder in Seattle, WA: backyard cottages (DADUs), attached ADUs, basement and garage conversions, with design, permits and construction. Licensed and insured. Service area: Seattle, WA.

Service area and contact: see https://aducraftseattle.com/contact. No phone number is published; requests go through the website form. Prices on this site are published ranges, not quotes. Updated November 2026.

## Main pages

- [About ADU Craft Seattle | Licensed and Insured ADU Builder](https://aducraftseattle.com/about): ADU Craft Seattle is a licensed and insured ADU builder working only in Seattle, WA: design, permits and construction.
- [Seattle Neighborhoods We Serve | ADU Craft Seattle](https://aducraftseattle.com/areas): ADU design and construction in Seattle neighborhoods: Ballard, West Seattle, Beacon Hill, Wallingford and the rest of the city.
- [Free ADU Consultation in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/contact): Request a free ADU consultation in Seattle, WA for a backyard cottage, garage conversion, attached or basement ADU.
- [Seattle ADU Guides: Rules, Cost, Permits | ADU Craft Seattle](https://aducraftseattle.com/guides): Seattle ADU answers as of November 2026: ADU rules, building two ADUs, parking, cost and permit timelines.
- [ADU Builder in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/): Licensed and insured ADU builder in Seattle, WA. Backyard cottages (DADUs), attached and basement ADUs and garage conversions, designed and permitted.
- [ADU Process in Seattle: Steps and Timeline | ADU Craft Seattle](https://aducraftseattle.com/process): How an ADU gets built in Seattle: consultation, site visit, design, SDCI permit, construction and final inspection.
- [ADU Types in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/services): Backyard cottages, garage conversions, attached and basement ADUs, and ADU design and permits in Seattle, WA. Free lot check.

## Guides

- [Can I Build Two ADUs in Seattle? (November 2026)](https://aducraftseattle.com/can-i-build-two-adus-in-seattle): Yes. Seattle allows up to two ADUs per lot: two attached, two detached or one of each. How that fits with Neighborhood Residential limits.
- [Do ADUs Need Parking in Seattle? (November 2026)](https://aducraftseattle.com/do-adus-need-parking-in-seattle): No. Seattle does not require off-street parking for ADUs, and Washington law limits parking rules. What to know before you build.
- [How Long Does an ADU Take in Seattle? (November 2026)](https://aducraftseattle.com/how-long-does-it-take-to-build-an-adu-in-seattle): Seattle ADU timeline as of November 2026: design, SDCI review and corrections, construction and inspections, and what speeds it up.
- [How Much Does an ADU Cost in Seattle? (November 2026)](https://aducraftseattle.com/how-much-does-an-adu-cost-in-seattle): Seattle ADU cost as of November 2026: published per-square-foot ranges, DADU, garage and basement conversion costs, and cost drivers.
- [What Are the ADU Rules in Seattle? (November 2026)](https://aducraftseattle.com/what-are-the-adu-rules-in-seattle): Seattle ADU rules as of November 2026: two ADUs per lot, 1,000 sq ft above-ground cap, 32 ft height in NR zones, no parking or owner rule.

## Services

- [ADU design and permits in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/adu-design-and-permits): ADU design and permits in Seattle, WA: plans, engineering and SDCI review, custom or pre-approved DADU plans. Free lot check.
- [Attached ADUs in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/attached-adu): Attached and basement ADUs in Seattle, WA: design, SDCI permits and construction. Free lot check.
- [Backyard cottages (DADUs) in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/detached-adu): Backyard cottages (DADUs) in Seattle, WA: design, SDCI permits and construction. Free lot check.
- [Garage conversion ADUs in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/garage-conversion-adu): Garage conversion ADUs in Seattle, WA: design, permits and construction. Free lot check.
- [In-home and basement ADUs in Seattle, WA | ADU Craft Seattle](https://aducraftseattle.com/in-home-adu): In-home and basement ADUs in Seattle, WA: units carved from existing space, designed and permitted. Free lot check.

## Areas served

- [ADUs in Ballard, Seattle | ADU Craft Seattle](https://aducraftseattle.com/ballard): ADU design, permits and construction in Ballard, Seattle, WA: craftsman lots and alley access. Free lot check.
- [ADUs in Beacon Hill, Seattle | ADU Craft Seattle](https://aducraftseattle.com/beacon-hill): ADU design, permits and construction in Beacon Hill, Seattle, WA: older homes and near light rail. Free lot check.
- [ADUs in Wallingford, Seattle | ADU Craft Seattle](https://aducraftseattle.com/wallingford): ADU design, permits and construction in Wallingford, Seattle, WA: compact lots and basement units. Free lot check.
- [ADUs in West Seattle, Seattle | ADU Craft Seattle](https://aducraftseattle.com/west-seattle): ADU design, permits and construction in West Seattle, Seattle, WA: hillside lots and view considerations. Free lot check.