ADU Contractors near Black Diamond, WA
The DADU Guy
2522 North Proctor Street, Tacoma, WA 98406
22.3 miles
The DADU Guy is a Tacoma-based detached ADU builder serving Pierce County, WA. Specializing in DADUs, garage conversions, and basement conversions, they offer 5 floor plans, guaranteed pricing, and full project management to maximize property value.
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Gravity Builders LLC
17422 108th Avenue Southeast, Renton, WA 98055
12.4 miles
Gravity Builders LLC is a licensed ADU contractor and custom home builder in Renton, WA. Specializing in ADU/DADU construction, custom homes, outdoor living spaces, and concrete work, they deliver quality craftsmanship with transparency and integrity.
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Gordon T. Jacob - Multifamily | DADU | Remodel
6901 81st Street Court East, Puyallup, WA 98371
17.7 miles
Gordon T. Jacob is a family-run ADU builder and home remodeling contractor in South Puget Sound. Specializing in detached ADUs, backyard cottages, middle housing, and full home renovations in the Tacoma area.
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Mallard Brothers Construction
120 State Avenue Northeast, Olympia, WA 98501
45.4 miles
Mallard Brothers Construction builds ADUs & Tiny Homes in Olympia, WA. They offer attached, detached, garage conversions & ADA-accessible units, managing design, permits & construction for property owners seeking rental income or extra living space.
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SkyDADU
Kent, WA 98042
6.2 miles
SkyDADU is a DADU builder and equity partner serving King, Snohomish, and Pierce counties in Washington State. They offer fixed-price packages, up to 100% funding, and handle permitting, construction, and condominiumization for detached accessory dwelling units.
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Drew Thatcher Construction
23 Country Club Drive Southwest, Lakewood, WA 98498
27.3 miles
Drew Thatcher Construction builds ADUs in Lakewood, WA, including detached units, attached ADUs, and garage conversions. Founded by a Navy nuclear engineer, they offer design-build services with local Pierce County expertise.
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HiLine Homes
11306 62nd Avenue East, Puyallup, WA 98373
14.8 miles
HiLine Homes is an experienced ADU builder in Idaho with nearly 30 years in custom home construction. They offer attached and detached ADU designs for rental income, multigenerational living, or home offices, with financing options available.
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Marksymov Brownstone
12814 Northeast 139th Street, Kirkland, WA 98034
29.4 miles
Marksymov Brownstone LLC is a licensed Seattle ADU contractor offering basement, garage & attic conversions. They handle design, permits & construction, ensuring code compliance across Seattle, Bellevue & Kirkland.
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Zee Design & Build
570 Kirkland Way, Kirkland, WA 98033
26.5 miles
Zee Design & Build is a Kirkland, WA ADU contractor serving King, Snohomish, Skagit & Island Counties. Offering full-service ADU construction—garage conversions, basement units, backyard cottages & more—since 2012.
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Emerald City Construction & Renovation
2571 152nd Avenue Northeast, Redmond, WA 98052
22.8 miles
Seattle ADU & DADU contractor Emerald City Construction & Renovation builds accessory dwelling units across Seattle, Bellevue & Eastside. Projects cost $350K–$500K+, take 8–14 months, and support rental income, multigenerational living & more.
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Puget Sound ADU Builders
4712 South Morgan Street, Seattle, WA 98118
19.9 miles
Puget Sound ADU Builders is a leader in ADU construction in western Washington state, excelling in design, construction, finishing, and permitting ADUs, DADUs, backyard cabins, garage conversions, duplexes, town homes, and multi-unit projects.
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Homez Remodel
13213 Southeast 278th Street, Kent, WA 98042
7.4 miles
Homez Remodel is a Seattle ADU builder specializing in DADUs, backyard cottages, garage conversions & basement ADUs. With 10+ years experience, they handle permits, design & construction across Seattle, Bellevue, Kirkland & more.
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Verum Construction Inc
17461 147th Street Southeast, Monroe, WA 98272
38.1 miles
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.
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Avio Homes
10908 62nd Street East, Puyallup, WA 98372
14.8 miles
Avio Homes is a Seattle-based ADU contractor specializing in detached ADUs, backyard cottages, and in-law suites. Serving Seattle, Tacoma, and Olympia, they handle design, permitting, and construction with local zoning expertise.
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Volcano Builders
1750 112th Avenue Northeast, Bellevue, WA 98004
23.1 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.
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Other cities in Washington
What you need to know
ADU Contractors in Black Diamond, WA: Building in a Historic Coal Mining Town
Black Diamond, Washington, is a small but historically rich city in King County, known for its coal mining heritage dating back to the 1880s. With a population of just over 4,000 residents and a semi-rural character, Black Diamond has seen growing interest in Accessory Dwelling Units (ADUs) as homeowners look to add housing options on their properties. Working with experienced ADU contractors in Black Diamond, WA is essential, as the city's unique zoning landscape and King County regulations create a specific set of requirements that must be carefully navigated.
Zoning and Permitting Requirements for ADUs in Black Diamond
Black Diamond operates under its own municipal code while also aligning with broader King County ADU regulations. Homeowners planning to build an ADU must obtain proper building permits through the City of Black Diamond's Community Development Department. Key considerations include:
- Lot size requirements: Properties must meet minimum lot size thresholds before an ADU can be permitted.
- Setback rules: ADUs must comply with specific front, rear, and side yard setbacks as outlined in the Black Diamond Municipal Code.
- Height restrictions: Detached ADUs are generally subject to height limitations consistent with the surrounding residential zone.
- Owner-occupancy rules: Depending on current local ordinances, owner-occupancy of either the primary or accessory unit may be required.
- Utility connections: Separate water and sewer connections may be required, which can add to overall project costs.
Types of ADUs Built by Contractors in Black Diamond
Skilled ADU contractors serving Black Diamond, Washington are experienced in constructing several types of accessory dwelling units suited to the area's larger residential lots and semi-rural setting:
- Detached ADUs (DADUs): Standalone structures built in the backyard, ideal for Black Diamond's spacious properties.
- Attached ADUs: Units added directly to the existing home, sharing at least one wall with the primary residence.
- Garage Conversions: Transforming an existing garage into a livable ADU space.
- Basement ADUs: Converting an existing basement into a fully permitted dwelling unit.
Why Hire a Local ADU Contractor in Black Diamond?
Hiring a local ADU contractor familiar with Black Diamond ensures your project moves forward efficiently. Local contractors understand the city's permitting timelines, inspection processes, and the specific challenges of building in a historically designated area. They can also help homeowners take advantage of Washington State's ADU-friendly legislation, including laws that have reduced barriers to ADU construction statewide.
Whether you're looking to create rental income, house extended family, or increase your property value, partnering with a qualified ADU contractor in Black Diamond, WA is the smartest first step. Always verify that your contractor is licensed, bonded, and insured in the state of Washington before beginning any project.