DADUs & Backyard Additions
A Second Home in Your Own Backyard.
Detached accessory dwelling units — backyard cottages, in-law suites, garage conversions — are one of the smartest ways to add space and value to a Seattle property. Whether you're planning for rental income, family, or aging in place, we build DADUs to the city's rules with the same craftsmanship and building science we bring to a full custom home.
What is a DADU?
A DADU is a small building with big constraints: tight footprints, setback and height limits, and every square foot counting. That's where thirty years of problem-solving pays off — smart layouts, efficient systems, and durable, low-maintenance materials that keep long-term costs down. We can partner directly with your architect, or bring in design/build support through SageDesignsNW to take you from idea to finished cottage.
Case Study
The same green practices carry over: high-performance envelopes, no-VOC finishes, heat-pump systems, and a 90% jobsite recycling rate — a small building that's genuinely built to last.
