One-level, two-bedroom ADU with a garage
A bright, efficient detached ADU that lives like a real home—featuring an open living/kitchen/dining layout, two bedrooms, and a full bath, all within an 800 SF footprint. Every area is intentionally planned to maximize comfort and everyday usability without wasted space.
With a dedicated garage and outdoor living built in (porch + patio), Cedar Grove is a strong option for long-term rental income, multigenerational living, or homeowners who want a backyard home that feels private, complete, and easy to maintain.
Pricing
Backyard homes are priced as five packages, from $297,049. See the packages and prices →
2026 proposal prices. Each package price includes construction, the builder’s fee and design & engineering; permits, utility and connection fees, and sales tax are extra. A fixed price for this plan on your lot comes after a site visit and design. Seven to fourteen months from design to move-in.
Key seattle DADU features
- 800 SF main floor with an open, comfortable layout
- 2 bedrooms for flexibility (roommate setup, guest room, office, kids, etc.)
- Full bathroom plus a dedicated tech/mech space for practical utility
- Kitchen with island and a defined dining area—great for real daily living
- Porch + patio for outdoor living and an easy indoor/outdoor flow
- Garage (~249 SF) for parking, storage, or gear/workshop space
What’s Included in the Seattle DADU plan set?
This plan set provides the core drawings needed to define the layout, exterior design, and overall construction intent—so you can move forward with pricing, planning, and permitting.
Typically included:
- Floor plan layout and dimensions
- Exterior elevations
- Core architectural details needed to price and permit the build
Still required for permitting (site-specific):
You’ll still need a site plan, utilities/connection details, and completed permit paperwork based on your jurisdiction’s requirements. We can help identify what’s needed for your lot and coordinate the next steps.
Exclusions
Not in the package price: permit fees, utility and connection fees (sewer, water, power), and sales tax. Site conditions a desk can’t see — slope, soils, tree protection, a long sewer run — can change the price after the site visit. Renderings may show options that aren’t in the standard package; the written scope for your project is what counts.
