ADU Contractors near Lake Oswego, OR
Wolf Industries
607 Southeast Eaton Boulevard, Battle Ground, WA 98604
25.7 miles
Wolf Industries builds factory-constructed, code-compliant tiny homes delivered directly to your property. Ideal as a backyard cottage, granny flat, ADU, or in-law suite, their build-deliver-setup model simplifies small-space living.
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Lamont Bros. Design & Construction
18675 Willamette Drive, West Linn, OR 97068
3.1 miles
Lamont Bros. Design & Construction is a Portland, Oregon ADU contractor offering full design-build services. They help homeowners plan and build accessory dwelling units, including detached ADUs, garage conversions, and JADUs for rental income or flexible living.
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Mighty ADU Company
2624 North Borthwick Avenue, Portland, OR 97227
9 miles
Mighty ADU Company is a trusted ADU contractor in Portland, OR, specializing in designing and building accessory dwelling units. They manage everything from planning and permitting to construction, ensuring quality, transparency, and stress-free results for homeowners.
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Das Chapin Design
Portland, OR
7.5 miles
Das Chapin Design specializes in ADU design, garage & basement conversions, and general contracting. Offering permit support, construction consultation, and full build services via ADU Design & Build, LLC, they create efficient, livable spaces in Portland, Oregon.
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My ADU
10110 Northeast 13th Avenue, Vancouver, WA 98686
19.6 miles
MyADU is a licensed ADU contractor in Vancouver, WA, specializing in custom accessory dwelling units across the Pacific Northwest. Founded in 2019, they offer design, permitting, and turnkey builds, completing most projects in 6–9 months.
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Soft Studios
1804 Northeast Martin Luther King Junior Boulevard, Portland, OR 97212
8.7 miles
SQFT Studios, founded in 2015, is Portland's leading ADU design-build firm. Specializing in detached ADUs, garage conversions & backyard cottages, they deliver Earth Advantage Platinum-certified, sustainable builds tailored to every homeowner.
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Reborn Construction LLC
29030 Southwest Town Center Loop East, Wilsonville, OR 97070
7.7 miles
Reborn Construction LLC specializes in garage conversions in Portland, transforming underused spaces into ADUs, rental units, and in-law suites. Fully compliant with local zoning codes, they handle permitting, structural upgrades, and all finish work.
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Cronen Building Co.
4909 SE Cooper St, Portland, OR 97206
6 miles
Cronen Building Co. is an expert ADU builder specializing in granny flats, garage conversions, backyard cottages, and detached ADUs. They deliver custom accessory dwelling units that boost property value and functionality.
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Triangle Bar Group
Gresham, OR 97227
14.2 miles
Triangle Bar Group is a Portland, Oregon design-build contractor specializing in custom homes, additions, remodels, and ADUs. They manage design, permitting, and construction under one roof, serving Portland and Vancouver, WA homeowners.
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Suite Additions Portland
11825 Southwest Greenburg Road, Tigard, OR 97223
3.7 miles
Suite Additions Portland specializes in ADU construction, garage conversions, home additions, and accessibility remodeling in the Portland metro area. Led by Tim Jorgens (CCB #201364), they offer full-service design, permitting, and build solutions.
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EcoCraft LLC
4408 NE 38th Ave, Portland, OR 97211
10.5 miles
EcoCraft LLC designs & builds custom ADUs in Portland, OR, including detached ADUs, garage conversions & in-law suites. Serving Beaverton, Tigard & Vancouver, WA. Projects range from $150K–$350K. Full permitting support included.
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Rain Creek Construction
8826 NE 339th St, La Center, WA 98629
32 miles
Accessory Dwelling Units (ADUs) add self-contained living space to existing properties. Rain Creek Construction serves Clark County homeowners with ADU builds, including garage conversions, basement apartments & detached units, backed by 10+ years of custom home experience.
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Adair Homes
4400 Northeast 77th Avenue, Vancouver, WA 98662
17.4 miles
Adair Homes offers custom ADU builder solutions, including stand-alone and attached accessory dwelling units. With a six-step building process, financing via Basis Home Loans, and expert guidance, Adair simplifies new home and ADU construction.
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Backyard Blueprint
Gresham, OR 97204
14.2 miles
Backyard Blueprint is a Portland, OR family-owned ADU contractor with 20+ years of experience. Services include detached ADUs, garage conversions, and remodels. They offer 15+ floor plans and custom designs, managing permits to completion in 4–6 months.
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Dweller Inc
Portland, OR 97204
7.7 miles
ADUs (Accessory Dwelling Units) are secondary housing units on residential properties. Popular in Oregon and California, they boost property value, generate rental income, and support multigenerational living. Financing options and local zoning rules apply.
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Other cities in Oregon
What you need to know
ADU Contractors in Lake Oswego: Navigating One of Oregon's Most Affluent Communities
Lake Oswego, Oregon, is known for its high property values, scenic lakefront neighborhoods, and strict community standards. Building an Accessory Dwelling Unit (ADU) in Lake Oswego requires working with experienced ADU contractors who understand the city's unique zoning codes, design expectations, and approval processes. With median home values well above the state average, homeowners in Lake Oswego often invest significantly in ADU construction to maximize their property's potential — whether for rental income, multigenerational living, or increased resale value.
Lake Oswego ADU Regulations and Zoning Requirements
Lake Oswego follows Oregon's statewide ADU legislation, which has progressively expanded ADU rights for homeowners. However, the city also enforces its own Community Development Code (CDC), which ADU contractors must carefully navigate. Key regulations include:
- Size limits: Detached ADUs in Lake Oswego are generally limited to 900 square feet or 75% of the primary dwelling's square footage, whichever is less.
- Setback requirements: ADUs must comply with rear and side yard setbacks, which vary depending on the specific zoning district within the city.
- Design compatibility: Lake Oswego places emphasis on architectural consistency, meaning ADU contractors must ensure the new structure complements the existing home's design and materials.
- Owner-occupancy rules: Historically, Lake Oswego required owner occupancy for ADU properties, though Oregon state law has been evolving in this area.
- Utility connections: Separate utility connections for ADUs may be required, adding to project complexity and cost.
Why Hiring a Local ADU Contractor in Lake Oswego Matters
Working with an ADU contractor experienced in Lake Oswego is essential for a smooth permitting and construction process. Local contractors are familiar with the city's planning department, inspection requirements, and the specific expectations of Lake Oswego's design review boards. They can help homeowners avoid costly delays and ensure that all plans meet both state and local building codes from the start.
Types of ADUs Commonly Built in Lake Oswego
Given the variety of property types in Lake Oswego — from lakefront estates to hillside homes — ADU contractors in the area work on a range of project types, including:
- Detached ADUs: Standalone backyard cottages or garden units, popular on larger Lake Oswego lots.
- Attached ADUs: Additions connected to the primary home, ideal for properties with limited yard space.
- Garage conversions: Converting existing garages into livable ADU space, a cost-effective option for many homeowners.
- Basement conversions: Transforming lower-level spaces into fully permitted ADU units.
Start Your Lake Oswego ADU Project Today
If you're considering adding an ADU to your Lake Oswego property, partnering with a qualified and locally experienced ADU contractor is the most important first step. From initial design and permitting through final construction, the right contractor will help you navigate Lake Oswego's regulations efficiently while delivering a high-quality living space that reflects the community's elevated standards.