Northwest ADU is a trusted ADU builder in Mill Creek, WA, offering full-service accessory dwelling unit construction, including detached ADUs, garage conversions, and basement conversions, with expert permit and zoning support.
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Brutsky Builds is a licensed ADU contractor in Bellevue offering full-service accessory dwelling unit construction. Services start from $210,000, covering design, permitting, and build completion in ~6 months.
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Giant Builders Seattle is a Kent, WA general contractor with 20+ years of experience offering ADU construction, garage conversions, kitchen & bathroom remodeling, room additions, roofing, deck building, and more.
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Alfa Framing offers residential construction services including structural framing, siding installation, roofing, and ADU/DADU construction. Serving new builds and additions, they bring decades of experience and a solution-oriented approach.
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Cascadia ADU builds attached, detached, garage & basement ADUs across King, Snohomish, Skagit & Chelan Counties, WA. Full-service design, permitting & construction completed in 8–10 weeks with 10+ years experience.
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Microhouse is a Seattle-based ADU builder specializing in custom detached ADUs (DADUs). They guide homeowners through zoning, design, and construction. Seattle permitted 551 DADUs in 2022, with a 40% increase in 2023. Microhouse offers site assessments and tailored DADU solutions.
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Era Builders is a Seattle-based ADU contractor offering detached ADU construction, design, permitting, remodeling, and commercial renovations. They handle full ADU projects compliant with Seattle zoning rules, using sustainable practices.
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Backyard ADU is a full-service ADU contractor managing every stage of accessory dwelling unit builds, including feasibility, permits, site surveys, foundations, construction, utility connections, and condo legal services.
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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.
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Hammer & Hand is a Portland & Seattle general contractor with 30+ years of experience in new homes, remodels, ADUs & commercial builds. Employee-owned, they offer expert craftsmanship, custom woodwork & trusted subcontractor networks.
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Olympic View Building is an ADU contractor offering detached ADU construction, garage conversions, in-law suites, granny flats, and JADU services. They help homeowners add value and living space while navigating zoning laws and building codes.
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Bicknell Builds offers ADU construction in the greater Seattle area, including detached ADUs, backyard cottages, granny flats, and in-law suites. Ideal for rental income, family housing, or added property value.
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Seattle ADU is a Seattle-based contractor specializing in accessory dwelling units, including detached ADUs, garage conversions, attached ADUs, and JADUs. They manage design, permitting, and construction for homeowners seeking additional living space.
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New Image Construction Management is a Washington State general contractor and building company based in Seattle, WA. With a primary focus of new home construction and renovation of residential and commercial properties.
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An ADU (accessory dwelling unit) is a secondary dwelling on a single-family lot. Types include basement apartments, garage conversions & detached cottages. Costs vary by size, design, permits & materials. Professional ADU contractors ensure smooth project execution.
read moreBainbridge Island, Washington, is one of the most desirable communities in the Puget Sound region, offering a rare blend of small-town charm and easy access to Seattle via the Washington State Ferry. This island setting creates a unique housing market where Accessory Dwelling Units (ADUs) are increasingly in demand. Whether you're looking to house extended family, generate rental income, or add long-term property value, working with experienced ADU contractors in Bainbridge Island is essential to navigating the island's specific building environment.
The City of Bainbridge Island has its own set of zoning codes and land use regulations that directly impact ADU construction. Under the Bainbridge Island Municipal Code (BIMC), ADUs are permitted in most residential zones, but contractors must carefully adhere to the following key requirements:
Working with local ADU contractors familiar with Bainbridge Island is a significant advantage. Island-based or island-experienced contractors understand the logistical challenges of building on an island, including coordinating material deliveries around ferry schedules, managing limited contractor availability, and working within the city's permitting timelines. The Bainbridge Island Department of Planning and Community Development oversees all building permits, and experienced contractors know how to streamline the approval process efficiently.
Given the variety of property types across the island, several ADU configurations are commonly built here:
Investing in an ADU on Bainbridge Island is a smart move in one of Washington's most sought-after communities. With rising housing demand and strong rental markets driven by Seattle commuters, a well-built ADU can deliver excellent returns. Connect with a qualified ADU contractor on Bainbridge Island today to discuss your project goals, understand local permitting requirements, and take the first step toward maximizing your property's potential.