Construction & Remodeling in Federal Way, WA

AFH conversions, DADU builds, and full remodels serving Federal Way's South King County neighborhoods.

Federal Way is PeakCraft's northernmost service area and the only city in this group that falls in King County, not Pierce County. That matters for permits — and we handle it routinely. The housing stock here runs heavily toward postwar and 1960s–80s ranches and split-levels: exactly the profile that converts well to Adult Family Homes, and exactly the profile where a mid-century bath and kitchen update pays for itself at resale.

Federal Way's proximity to Joint Base Lewis–McChord drives consistent rental demand. Military families moving through the area need rentals quickly; DADUs and converted garage apartments fill that gap efficiently. The city also has a large, established immigrant community that operates many of the AFHs in South King County — a segment we have worked with across Pierce County and understand well.

Permits & zoning

Building in Federal Way

Federal Way permits through the City of Federal Way Community Development Department — King County, not Pierce County. This is the key jurisdictional fact for Federal Way: every other city in PeakCraft's service area is in Pierce County. Federal Way is not. Building permits here — remodels, additions, new construction, DADUs, and AFH compliance work — go through the City of Federal Way, which is a King County municipality. Pierce County PALS has no jurisdiction here.

Federal Way is a GMA-planning jurisdiction and fully subject to HB 1337 (RCW 36.70A.680). Two ADUs per lot are allowed in the Urban Growth Area. No owner-occupancy requirement applies. ADU floor area cannot be restricted below 1,000 sq ft. Detached garage conversions must be allowed even where the structure does not meet current setbacks. Impact fees for ADUs are capped at 50% of principal-unit rates. DADU permit timelines typically run 4–8 weeks under HB 1337's streamlined-review requirement.

Federal Way's postwar ranch stock is a strong match for AFH conversion. Wide hallways are common in this era of construction, main-floor living reduces accessibility scope, and garage-to-bedroom conversions are straightforward. AFH compliance work in Federal Way permits through City of Federal Way Community Development under a DSHS-coordinated plan-review track. Expanding an existing AFH from 6 to 8 residents requires a fire-sprinkler install and a remodel inspection (RCW 70.128.066); we coordinate the structural work, the sprinkler subcontractor, and the DSHS submittal. Federal Way does not have a historic district that affects residential work. Standard plan review applies across the residential zones where we typically work.

Recent work in the area

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Frequently asked questions

Do you serve Federal Way?+
Yes. Federal Way is in our service area even though it's King County rather than Pierce. We pull permits through the City of Federal Way Community Development Department and have done AFH, DADU, and remodeling work in the area. Contact us for a free site walk.
Federal Way is King County — does that change how permits work?+
Yes. Federal Way permits go through the City of Federal Way Community Development Department, not Pierce County PALS. We're set up to work in both King and Pierce County jurisdictions. The permit process is similar in structure; the agency you submit to is different.
Is Federal Way a good market for AFH conversions?+
Yes. The ranch and split-level housing stock from the 1960s–80s converts well: main-floor living, wide-enough doorways, and garage structures suitable for sleeping-room additions. Federal Way also has an established AFH operator community. We handle the full scope — permits, structural work, accessibility upgrades, and DSHS plan coordination.
Can I build a DADU in Federal Way?+
Yes. HB 1337 applies in Federal Way as a GMA-planning city, allowing up to two ADUs per lot with no owner-occupancy requirement. JBLM-adjacent rental demand makes the income math solid. We'll confirm your parcel conditions at a free site walk.

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