ADU Contractors near Lake Oswego, OR
Jenson Contracting
19120 S Fernwood Rd, Molalla, OR 97038
19.7 miles
Jenson Contracting builds ADUs in Beaverton, Oregon, including detached ADUs, garage conversions & in-law suites. They navigate local size, height, setback & lot coverage rules to ensure compliant, self-contained accessory dwelling units.<... read more
VDC Builders Inc
14308 NE Powers St, Vancouver, WA 98682
18.3 miles
VDC Builders Inc specializes in ADU design & construction, including backyard cottages, in-law suites & rental units. Services cover flooring, kitchen & bathroom remodels, custom home building & cabinet refinishing.
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Everlife Home
PO Box 417, Newberg, OR 97132
14 miles
Everlife Home offers ADU packages with 1-2 bedroom floor plans, full kitchens, and standard finishes. As a full-service ADU contractor, they manage the entire build, with optional upgrades, decks, and storage add-ons available.
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Gencon
Clackamas, OR 97027
6.5 miles
Gencon is a family-owned ADU contractor serving Clackamas County, OR. They build detached ADUs, garage conversions, in-law suites & JADUs. Full-service from design to move-in-ready finish.
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Exceptional Home Builders Salem
1525 11th Avenue, Salem, OR 98122
36.5 miles
Exceptional Home Builders Salem is a licensed ADU contractor with 20+ years of experience. They build backyard cottages, garage conversions & basement apartments in Salem, handling design, permitting & construction.
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Straight Line Design and Remodeling LLC
9645 Southwest Beaverton Hillsdale Highway, Beaverton, OR 97005
6.3 miles
Straight Line Design and Remodeling LLC offers ADU design and build services in Portland, Oregon. Serving Beaverton, Tigard, Lake Oswego & Hillsboro since 2010, they build backyard cottages for rental income, multigenerational living & add... read more
Westside ADU Builders
1960 Northeast 25th Avenue, Beaverton, OR 97124
15.2 miles
Westside ADU Builders is a licensed ADU contractor in Beaverton, OR, offering detached ADUs, attached ADUs, garage conversions, JADUs, and home additions. They manage design, permits, and construction from start to finish.
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Catalyst Construction
825 Northeast 20th Avenue, Portland, OR 97232
8.4 miles
At Catalyst, our Portland ADU Builders are experts in building homes, small homes, Casitas and Accessory Dwelling Units. Trust Catalyst Construction and Remodel to bring experience and high performance to build out your new attached or unattached ... read more
Cronen Building
8110 SE 45th Ave, Portland, OR 97204
5.5 miles
Cronen Building Co. specializes in accessory dwelling units (ADUs), including granny flats, garage conversions, and backyard cottages. They guide homeowners through design and construction, delivering quality ADUs for rental income, in-law suites,... read more
Environs
3240 SW Sherwood Pl, Portland, OR 97201
6 miles
Environs is a woman-owned design-build firm in Portland, Oregon, specializing in ADUs, home additions, remodels, and new construction. Licensed Oregon contractor (CCB 188377) with availability for projects breaking ground summer 2026.
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Brothers Lane Builders
Salem, OR
36.5 miles
Brothers Lane Builders, LLC specializes in ADU (Accessory Dwelling Unit) construction for homeowners in Salem, Oregon. Whether you want a backyard cottage, in-law suite, or rental unit, our experienced team guides you through every step—from pla... read more
Keyser Construction Inc
452 SW Alderwood Dr, West Linn, OR 97068
4.4 miles
Keyser Construction Inc is a Portland, OR ADU contractor since 1996. They build detached cottages, garage conversions, basement & attic ADUs. Licensed, bonded & insured, offering free estimates and permit handling across the Portland metro... read more
Neil Kelly Inc
804 North Alberta Street, Portland, OR 97217
10.2 miles
Neil Kelly designs & builds ADUs in the Northwest, including detached cottages, garage conversions, basement/attic conversions & attached units. Expert team handles permits, local regulations & custom design for rental income, guests o... read more
Conrad Construction LLC
5325 Northeast 109th Avenue, Portland, OR 97220
12.6 miles
Conrad Construction is Portland's trusted ADU builder with 20+ years of experience. Specializing in backyard cottages, garage conversions, granny flats & detached ADUs, they handle permits, design & construction to boost property value.read more
Sert Construction
1528 Southeast Holgate Boulevard, Portland, OR 97202
5.9 miles
As a premier ADU contractor in Portland, Sert Construction specializes in designing and building high-quality, functional ADUs. Whether you're considering an added space for rental income, additional family space, or a home office, their team of e... read more
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.