Go Far®ADU & DADU builder · Kenmore
ADU & DADU builder for Kenmore.
Kenmore moved early on ADUs — it opened every single-family lot to backyard cottages back in 2020, years before the state required it — and its hillsides of daylight-basement homes give it something most cities don’t have: lower levels practically drawn for a second unit. Go Far Construction builds permitted, finished ADUs across Kenmore — basement conversions, ground-up backyard cottages, attached suites, and garage conversions — from a family-owned, licensed Washington general contractor with 12+ years across King and Snohomish counties.
Washington’s ADU law — HB 1337 — sets the statewide floor cities had to meet by mid-2025: two accessory units allowed on most residential lots, no owner-occupancy requirement, and ADUs of at least 1,000 square feet permitted. What fits on your Kenmore parcel still comes down to zoning, lot coverage, and setbacks, so we confirm the numbers with the City of Kenmore before design begins. Our ADU vs. DADU guide walks through which route fits which lot.
The Kenmore head start is the daylight basement: a grade-level entry on the downhill side, full-height ceilings, windows already in the walls, and plumbing close by — which is why basement ADU conversions anchor the Kenmore market. On budget, basement and garage conversions generally land between $100,000 and $250,000 depending on the starting condition of the space, while a new-build detached cottage typically runs $250,000 to $450,000 including site work, utilities, and soft costs. The full math lives in our ADU cost guide and DADU cost guide, and ADU financing options covers how owners fund the build.
We build every route to a second unit: basement conversions, attached mother-in-law suites, garage conversions, and ground-up DADUs in the deep yards off the Burke-Gilman corridor. Permits run through the City of Kenmore; we prepare the application, carry fees in an itemized written price, and meet every inspector on site, as on all our Kenmore projects.
What we build in Kenmore
Kenmore ADU questions
How much does it cost to build an ADU in Kenmore?
Basement and garage conversions generally land in the $100,000–$250,000 range depending on the starting condition of the space — a dried-in daylight basement with plumbing nearby sits toward the lower end. A new-build detached ADU (backyard cottage) typically runs $250,000–$450,000 including construction, site work, utility connections, and soft costs. Every project gets an itemized written estimate before design is finalized.
How many ADUs does Kenmore allow on a lot?
Washington’s statewide ADU law, HB 1337, required cities to allow two accessory units on most residential lots by mid-2025, with no owner-occupancy requirement — and Kenmore was ahead of the curve, having opened all single-family lots to detached ADUs back in 2020. Exactly what fits on your parcel depends on zoning, lot coverage, and setbacks, so we confirm the numbers with the City of Kenmore before design begins.
Is my daylight basement a good ADU candidate?
In Kenmore, usually yes — the grade-level entry on the downhill side gives the unit its own front door, ceilings are typically full height, and the laundry plumbing is often a wall away from where the new kitchen and bath want to go. The early checks are ceiling height, egress windows for bedrooms, and the sewer line’s depth; we run all three before any design money is spent.
Do you handle the Kenmore permits and inspections?
Yes — we prepare the City of Kenmore application, include permit fees in your itemized written estimate, and meet every inspector on site from foundation to final.
Plan your project
Planning a Kenmore ADU? Useful next reads: ADU costs · DADU costs · basement ADUs · Washington’s ADU law · our Kenmore page · all of King County