Go Far®ADU & DADU builder · Lynnwood
ADU & DADU builder for Lynnwood.
Lynnwood is our home city — our shop, our crews, and our owners are all minutes away — and it’s one of the best places in Washington to add a second unit. Go Far Construction builds permitted, finished ADUs across Lynnwood and Snohomish County: ground-up backyard cottages, basement apartments, garage conversions, and attached units, from a family-owned, licensed Washington general contractor headquartered right here.
Washington’s ADU law — HB 1337 — requires cities inside urban growth areas to allow up to two accessory dwelling units per residential lot, and it rolled back the old blockers: heavy parking mandates and owner-occupancy requirements among them. The details are local and still moving, which is why we wrote a dedicated guide to ADU & DADU rules in Lynnwood and Snohomish County — and why every project starts by confirming your lot’s numbers with the City of Lynnwood. Our ADU vs. DADU guide walks through which route fits which lot.
On budget: basement ADU conversions and garage conversions in this market 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. With light rail now connecting Lynnwood to Seattle, the rental math here keeps getting better; ADU financing options covers how owners fund the build.
We build every route to a second unit: basement conversions, garage conversions, attached mother-in-law suites, and ground-up DADUs. Permits run through the City of Lynnwood; we prepare the application, carry fees in an itemized written price, and meet every inspector on site — on our shortest drive of all, as on everything we build from our Lynnwood home base.
What we build in Lynnwood
Lynnwood ADU questions
How much does it cost to build an ADU in Lynnwood?
Basement ADU conversions and garage conversions generally land in the $100,000–$250,000 range depending on the starting condition of the space. 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 Lynnwood allow on a lot?
Under Washington’s HB 1337, cities inside urban growth areas must allow up to two accessory dwelling units per residential lot, and the law rolled back heavy parking mandates and owner-occupancy requirements. Allowed sizes, heights, and setbacks are zone-specific and still being updated locally, so we confirm your lot’s exact numbers with the City of Lynnwood before design begins.
Why build an ADU in Lynnwood right now?
Light rail now connects Lynnwood to Seattle, rental demand is strong, and state law has never been friendlier to second units — which is why ADUs here pencil better than ever. It’s also the most popular way to house family nearby: aging parents, a returning graduate, or a long-term guest suite with its own front door.
How long does an ADU project take in Lynnwood?
Conversions of existing space typically run two to four months of construction after permits; ground-up DADUs run six to ten months including site work. Design and permitting add time ahead of construction — and because our shop and crews are based in Lynnwood, these projects get the fastest response times we can offer anywhere.
Plan your project
Costs, rules, and timelines for Lynnwood ADU projects: ADU costs · DADU costs · Lynnwood & Snohomish County ADU rules · ADU timelines · ADU financing · Seattle ADUs · Bellevue ADUs · Everett ADUs · Edmonds ADUs · Bothell ADUs · Shoreline ADUs · our Lynnwood page