ADU Contractors near Port Townsend, WA
Cruvers Contracting LLC
1002 Pine Avenue, Snohomish, WA 98290
35.2 miles
Cruvers Contracting LLC builds ADUs in Snohomish, WA, tackling rural challenges like septic systems, slopes, and wooded lots. Serving areas including Lake Stevens, Monroe, and Everett with phased planning and durable, site-specific construction.
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Pelletier Construction Group
1150 North 84th Street, Seattle, WA 98103
36.3 miles
Seattle ADU
509 Olive Way, Seattle, WA 98101
40.9 miles
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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Giant Builders Seattle
125 Boren Avenue South, Seattle, WA 98144
42.2 miles
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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Twin Brothers Group
14205 Southeast 36th Street, Bellevue, WA 98006
47.8 miles
Twin Brothers Group is a licensed framing contractor in Washington State specializing in ADU, DADU, garage conversions, and home additions across King and Snohomish County, serving Seattle-area GCs and owner-builders.
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Armada Design & Build Inc.
15600 Northeast 8th Street, Bellevue, WA 98008
46.2 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 craftsmanship.
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Northwest ADU Builders of Mill Creek
6100 219th Street Southwest, Mountlake Terrace, WA 98043
32 miles
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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Haas Development & Construction
4001 Aurora Avenue North, Seattle, WA 98103
38.1 miles
Haas Development & Construction offers ADU & DADU construction in Greater Seattle. They handle planning, permits, design, and builds for attached & detached units, including prefab DADU plans, helping homeowners add rental income or family housing.
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Tenhulzen Construction
16900 9th Avenue Southeast, Mill Creek, WA 98012
32.5 miles
Tenhulzen Construction offers ADU and DADU construction services in Washington State, providing pre-approved and custom plans. Options suit various budgets and timelines, with benefits including added property value and flexible living spaces.
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Verum Construction Inc
17461 147th Street Southeast, Monroe, WA 98272
40.8 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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Brutsky Builds
800 Bellevue Way Northeast, Bellevue, WA 98004
44.2 miles
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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Coates Design Architects
900 Winslow Way East, Bainbridge Island, WA 98110
36.7 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 & permit-ready plans included.
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NW Finishing
2265 116th Avenue Northeast, Bellevue, WA 98004
43.9 miles
NW Finishing is a Seattle-area ADU contractor offering full-service accessory dwelling unit design and construction. Serving Bellevue, Kirkland, Redmond, Renton, and more, they handle permits, planning, and builds for detached, cottage, and prefab ADUs.
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Lakeside ADU & Home Planning
1901 Vernon Road, Lake Stevens, WA 98258
34.3 miles
Lakeside ADU & Home Planning, based in Lake Stevens, WA, is a full-service ADU builder serving the Puget Sound Region. They specialize in backyard cottages, mother-in-law suites, garage conversions, and new builds, managing design, permitting, and construction.
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ModernSpace ADU Construction Redmond
17181 Redmond Way, Redmond, WA 98052
44.3 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.
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Other cities in Washington
What you need to know
ADU Contractors in Port Townsend: Building in a Historic Victorian Seaport
Port Townsend, Washington, is one of the best-preserved Victorian seaports in the United States, and its rich architectural heritage creates a unique environment for ADU contractors in Port Townsend. The city's historic districts, including the National Historic Landmark designation for much of its downtown and residential areas, mean that building an Accessory Dwelling Unit here requires careful attention to design standards and local guidelines. Experienced ADU contractors understand how to balance modern living needs with the preservation requirements that make Port Townsend so distinctive.
Local Regulations and Zoning for ADUs in Port Townsend
Port Townsend follows Jefferson County and City of Port Townsend zoning codes that govern ADU construction. ADU contractors in Port Townsend, WA must navigate specific rules, including:
- ADUs are generally permitted in single-family residential zones (R-I and R-II districts)
- Maximum ADU size is typically limited to 1,000 square feet or a percentage of the primary dwelling's square footage
- Setback requirements must be carefully observed, particularly in older, smaller lots common in Port Townsend
- Design standards in historic districts may require materials and aesthetics consistent with Victorian-era architecture
- Separate utility connections and owner-occupancy requirements may apply depending on the property type
Working with a knowledgeable ADU contractor in Port Townsend ensures that all permits are properly filed with the City of Port Townsend's Development Services Department and that your project meets both state and local building codes.
Types of ADUs Built in Port Townsend
Given the character of Port Townsend's neighborhoods, skilled ADU contractors commonly build several types of accessory dwelling units to suit the city's unique housing stock:
- Detached ADUs (DADUs): Standalone backyard cottages that complement the main residence
- Attached ADUs: Additions built onto an existing home, maintaining architectural continuity
- Garage Conversions: Transforming existing carriage houses or garages into livable spaces
- Basement ADUs: Converting lower-level spaces in older Victorian homes into independent units
Why Hire a Local ADU Contractor in Port Townsend?
Hiring a local ADU contractor in Port Townsend, Washington offers significant advantages. Local contractors are familiar with the city's permitting timelines, its historic preservation review process, and the specific challenges posed by the region's coastal climate, including moisture management and wind resistance. Port Townsend's relatively small lot sizes and older infrastructure also require contractors with hands-on experience navigating tight spaces and aging utility systems.
Whether you are looking to create rental income, house a family member, or increase your property value, an ADU in Port Townsend is a smart investment. Connect with a qualified, licensed ADU contractor today to explore your options and begin the planning process in this beautiful Pacific Northwest coastal community.