550 sq ft DADU with Wraparound Deck
in Bothell, WA
A single-bedroom detached ADU with covered wraparound deck and dedicated carport in Bothell, WA. Grey fiber cement siding with dark charcoal base trim. Fully self-contained with private outdoor entertaining space and dedicated parking. The covered deck with ceiling fan and recessed lighting extends the living space outdoors year-round. Built by Evercrest LLC for $220,000 ($400/sq ft). This detached ADU (DADU), often called a backyard cottage, includes outdoor living and dedicated parking — rare for a standalone unit.
Exterior & Carport
Grey fiber cement siding with dark charcoal base trim and gable roofline. Dedicated carport provides covered parking separate from the main house.
Raised foundation with lattice screening. Covered entry porch with steps up to the front door. The design blends with Pacific Northwest residential neighborhoods while feeling modern and purposeful.
Covered Wraparound Deck
Covered timber deck with ceiling fan, recessed lighting, and white railing — a true outdoor living room usable year-round in the Pacific Northwest.
The deck wraps around the side, accessed through sliding glass doors from the living area. Gable roof extension provides full weather protection while keeping the space bright. Polished timber decking adds warmth.
Kitchen & Living
White flat-front cabinets with stone-look countertops, built-in oven, electric cooktop, and subway tile splashback. Kitchen island flows into the living area.
LVP flooring throughout — warm, waterproof, easy to maintain. Sliding glass door opens directly onto the wraparound deck, connecting indoor and outdoor living.
Split-system AC for year-round comfort.
Bathroom
Full-height grey porcelain tile in the shower with built-in niche shelf. Frameless glass panel and ceiling-mounted rain head create a spa experience.
White vanity with chrome fixtures. Frosted louvre window for ventilation. The grey-and-white palette feels clean, modern, and timeless.
Building Specifications
Project
Status: Completed
Location: Bothell, WA
Type: DADU + deck + carport
Builder
General Contractor: Evercrest LLC
Service Area: Snohomish & King Counties
Understanding DADUs with Outdoor Living in Bothell
Adding a covered deck and carport transforms a detached ADU (backyard cottage) from a basic backyard unit into a desirable independent living space. In Bothell's rainy climate, a covered outdoor area is essential year-round. The carport adds practical value — dedicated parking separate from the main home. Evercrest LLC designs DADUs with custom outdoor spaces throughout the area.
Detached ADU (Backyard Cottage) Construction in Bothell — FAQ
This 550 sq ft detached ADU (backyard cottage) with wraparound deck and carport was $220,000 ($400/sqft). A covered deck adds $15,000–$30,000, a carport $10,000–$20,000. These features increase livability and rental value significantly.
Yes. Carports must meet setback and lot coverage limits. Evercrest LLC reviews your zoning during the free consultation.
Absolutely. With 150+ rainy days per year, a covered deck adds a usable outdoor room year-round — great for personal use and a major selling point for tenants.
A raised foundation lifts the backyard cottage above grade on piers or crawl space for better drainage and utility access — a more traditional home appearance with steps to the entry.
Yes — decks, patios, carports, pergolas, all customized to your lot, budget, and lifestyle.
Ready to Build a Backyard Cottage with Outdoor Living?
Evercrest LLC designs and builds DADUs with decks, carports, and custom outdoor spaces.
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