ADU Construction in Lynnwood

Lynnwood is a straightforward run north on I-5 or SR-99 — typically 25 to 35 minutes from our base, outside rush hour. On-site consultations are scheduled throughout the week, including Saturdays for homeowners who can't break away during the day. Vladislav comes out personally, not a salesperson running a script. From first call to on-site meeting is usually 3 to 5 business days. Call (206) 591-1096 to get on the calendar. We cover all of Snohomish County, so Edmonds, Mountlake Terrace, Mukilteo, and Kenmore are all regular service areas alongside Lynnwood.

A 600 to 800 sq ft single-story DADU in Lynnwood typically runs $180,000 to $260,000 fully permitted and finished. That range shifts based on site conditions — flat lot versus sloped — utility connection approach, and finish level. LVP flooring and stock cabinets land at the lower end; quartz countertops, semi-custom cabinetry, and a full tile bath push it higher. Attached ADUs over a garage run $120,000 to $175,000. Basement conversions with proper egress, DriCore subfloor, and vapor barrier work start around $65,000 and can reach $115,000 with a full bathroom. TopVolk provides a detailed line-item quote after the site visit — no vague ranges. Schedule a free estimate at (206) 591-1096.

Lynnwood Development Services processes ADU permits for properties inside city limits — not Snohomish County PDS, which only covers unincorporated areas. You'll need a full building permit: site plan, floor plan, elevations, structural drawings where applicable, and Washington State Energy Code compliance documentation. First-pass plan review typically takes 8 to 14 weeks. After approval, city inspectors call for rough-in inspection and final inspection before the certificate of occupancy issues. TopVolk prepares the permit package as part of the contract. WA Licensed Contractor — we pull the permit in our name, and the paperwork doesn't land on you to figure out.

Yes — WA HB 1337 (2024) is a statewide law. It allows up to two ADUs on any single-family lot in Washington, including every parcel inside Lynnwood city limits. You can have a DADU in the backyard plus an attached or basement ADU simultaneously, as long as both meet setback, height, and lot coverage rules. The law also removed owner-occupancy requirements that previously limited ADU rentals and eliminated parking minimums for properties near transit — which applies directly to homes within a half-mile of Lynnwood City Center Station on the 2 Line. Call (206) 591-1096 if you want to walk through what your specific lot can support under current code.

Permit submittal to move-in on a new DADU typically runs 4 to 6 months: 8 to 14 weeks for Lynnwood Development Services plan review, then 6 to 10 weeks of active construction on a straightforward 600 to 800 sq ft single-story unit. Basement conversions run faster on the construction side — 5 to 8 weeks once permits clear, and permit review on a simpler scope often comes back in 4 to 6 weeks. Attached additions land in between. The permit timeline is built into the project schedule from day one. Deadline penalties are written into the contract — if construction runs past the agreed completion date, TopVolk pays a financial penalty. That commitment is in writing before we break ground.

Yes — TopVolk Construction covers all of Snohomish County, including Edmonds, Mountlake Terrace, Mukilteo, Bothell, Kenmore, and Mill Creek. Each city runs its own permit center with its own review timeline: Edmonds has its own building department, Mountlake Terrace processes permits in-house, and unincorporated Snohomish County parcels go through Snohomish County PDS. We handle the permit package for each jurisdiction as part of the project contract. 100+ projects completed since 2017 across the Seattle metro area. Call (206) 591-1096 to set up a free on-site consultation — no travel fee, no sales pitch.