ADU Contractors near Bothell, WA
Volcano Builders
1750 112th Avenue Northeast, Bellevue, WA 98004
10.2 miles
Volcano Builders is a licensed, family-owned construction company serving Seattle, Bellevue & Monroe, WA. Specializing in kitchen remodels, bathroom renovations, home additions, deck builds, and ADU construction since 2021.
read more
Better Builders
5606 California Avenue Southwest, Seattle, WA 98136
17.5 miles
Better Builders is a Seattle-based general contractor specializing in residential remodeling, garage conversions, ADUs, kitchen and bathroom remodels, basement finishing, deck repairs, and exterior work, with dedicated project management.
read more
Cast Architecture
115 North 36th Street, Seattle, WA 98103
11 miles
Cast Architecture specializes in ADU and backyard cottage design in Seattle since 2009. With 80+ projects, their Cedar Cottage is pre-approved by Seattle & Kirkland. Award-winning designs include Widner Cottage and Lichtenstein Studio. Visit c... read more
ModernSpace ADU Construction Redmond
17181 Redmond Way, Redmond, WA 98052
8.4 miles
ModernSpace ADU Construction is a certified ADU builder serving Redmond, offering tailored accessory dwelling unit services. Competitive pricing, no hidden fees, and a satisfaction guarantee make them a trusted local choice.
read more
Raincap Construction
2315 North 65th Street, Seattle, WA 98103
8.9 miles
Raincap Construction, a Seattle-based family-owned contractor, specializes in ADU and DADU construction. They build backyard cottages, in-law suites, and garage conversions, helping homeowners add living space, rental income, and property value.read more
Armada Design & Build Inc.
15600 Northeast 8th Street, Bellevue, WA 98008
11.2 miles
Armada Design & Build Inc., Bellevue, WA, offers full-service residential design-build since 2011. Specializing in remodels, home additions, and custom builds across Puget Sound, they deliver turnkey solutions with in-house design and quality ... read more
Coates Design Architects
900 Winslow Way East, Bainbridge Island, WA 98110
17.5 miles
Seattle ADUs offer rental income & flexible living. Coates Design Architects guides homeowners through detached, attached, garage & basement conversions. Costs range $200K–$350K+, with 7–11 month timelines. Sustainable design & per... read more
Other cities in Washington
What you need to know
ADU Contractors in Bothell, WA: Building in a Rapidly Growing Tech-Adjacent Community
Bothell, Washington has experienced remarkable population growth over the past decade, largely driven by its proximity to major tech employers in the greater Seattle-Eastside corridor. This growth has created significant demand for additional housing, making Accessory Dwelling Units (ADUs) an increasingly popular solution for homeowners. Whether you're looking to house extended family, generate rental income, or increase your property value, working with experienced ADU contractors in Bothell, WA is essential to navigating the local building landscape successfully.
Understanding Bothell's ADU Regulations and Permitting Requirements
Bothell operates under its own municipal code, and portions of the city fall under both Snohomish County and King County jurisdictions, which can add complexity to the permitting process. Homeowners and contractors must carefully determine which jurisdiction governs their specific parcel before beginning any ADU project. The City of Bothell generally allows ADUs in single-family residential zones, but there are important rules to follow:
- Maximum ADU size is typically limited to 1,000 square feet or a percentage of the primary dwelling's square footage
- Owner-occupancy requirements may apply, requiring the homeowner to reside in either the primary residence or the ADU
- Setback requirements, lot coverage limits, and height restrictions must all be carefully observed
- Detached ADUs, attached ADUs, and DADUs (Detached Accessory Dwelling Units) each have distinct approval pathways
- Utility connections, including water and sewer, must meet current city standards
What to Look for in a Bothell ADU Contractor
Choosing the right ADU contractor in Bothell means finding a professional who understands local zoning codes, has experience pulling permits through the City of Bothell's Community Development Department, and can manage the full scope of construction from design to final inspection. The best contractors will offer:
- Familiarity with Bothell's specific municipal code and dual-county jurisdiction nuances
- In-house or partnered architectural and design services
- Transparent project timelines and cost estimates
- A proven track record of completed ADU projects in the Bothell area
- Knowledge of Washington State energy code compliance requirements
The Value of ADUs in Bothell's Housing Market
Given Bothell's strong real estate market and high rental demand — fueled by workers at nearby companies and students attending University of Washington Bothell — an ADU can deliver exceptional return on investment. Rental rates in the area remain competitive, and a well-built ADU can significantly increase your property's overall market value.
Working with a licensed, insured, and locally experienced ADU contractor in Bothell, Washington ensures your project meets all code requirements, stays on budget, and is completed efficiently. Start by consulting with a contractor who specializes in ADU construction and has a deep understanding of Bothell's unique regulatory environment.