The rules decide the design
Height limits, lot coverage, setbacks, and parking rules determine what your backyard can actually hold. We start there so your design does not get redrawn at plan review.
All services
Development & Ground-Up
Accessory building construction
DADUs, garages, shops, and studios
Detached accessory dwelling units, garages, workshops, studios, and storage structures — designed to Seattle's accessory-structure rules and built to last.
What's included
- DADU feasibility and lot coverage review
- Detached garages and shops with slabs
- Backyard offices and studio buildings
- Utility runs, panels, and sub-metering
Rentable from day one
For DADUs we build to the same standard as the main house: proper insulation, ventilation, separate utilities where required, and a finish level tenants will pay for.
Accessory building construction in Seattle and South King County
We work out of 10123 66th Ave S, Seattle, WA 98178 and serve Rainier Beach, Skyway, Renton, Tukwila, Beacon Hill, Columbia City, Burien, and surrounding neighborhoods. Licensed, bonded, and insured in Washington State, with permits and inspections handled by our team.