Most cities in Washington allow up to 1,200 sq ft for a DADU. We offer pre-drawn plans you can permit fast, or fully custom designs drawn to your lot, your zoning and your family.
Our pre-drawn plans were designed for real Pacific Northwest lots — they permit fast, build clean, and are easy for inspectors to read. You can adapt them or use them as-is.
Or, if your lot has interesting constraints — daylight, drainage, view, side-yard setback, garage carry-over — we draw a fully custom plan tailored to it. Either way, the plan is permit-ready when we hand it over.
Plan 01A 1,000 sq ft, two-story cottage with main-floor living and two bedrooms up — the size Eric recommends for the best balance of space, cost and livability.
Plan 02A compact 20' × 25', two-story modern DADU on a tight urban Seattle lot — efficient main-floor living with two bedrooms and a full bath upstairs.
Plan 03Our best-selling plan — a ~1,050 sq ft, two-story layout with a vaulted upstairs ceiling and skylight, two bedrooms, two baths, and generous main-floor living.
A well-designed accessory dwelling pays itself back three ways — sometimes all at once.
A dedicated unit for guests, parents, or grown children — close enough to share dinner, separate enough to share nothing else.
A well-designed and constructed ADU can significantly increase the resale value of your property.
A long-term rental or short-stay unit pays the mortgage. Many of our DADUs are cash-flow positive from day one.
We meet on-site, walk the property, and talk through what an ADU could look like for your lot, your family and your long-term plan. No pressure, no obligation.
Custom layouts drawn for the property — orientation, daylight, drainage, code clearances. Either from our ready plans or fully custom.
We handle zoning review, permit submission, plan revisions and city inspection scheduling so you don't have to learn the code.
Demolition, excavation, groundwork, foundation, framing, MEP, finishes — owner-led every week with a single point of contact.
City final, certificate of occupancy and the keys to your new backyard home — delivered on time and on budget.
“DIGS did a fantastic job clearing and prepping our land exactly how we needed. The results look great.”
Phone or on-site consultation. Owner-led from first call to final inspection. Call DIGS directly or send a note — we'll be in touch.
