ADU Contractors near Clackamas, OR
Tiny Heirloom
4890 Northeast 185th Drive, Portland, OR 97230
15 miles
Tiny Heirloom is a family-owned tiny home builder offering custom, prefab, and pre-owned homes. They serve residential and commercial clients, including ADUs, resorts, and workforce housing, prioritizing quality craftsmanship and intentional livin... read more
My ADU
10110 Northeast 13th Avenue, Vancouver, WA 98686
23.7 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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Arciform
2303 North Randolph Avenue, Portland, CO 97227
13.5 miles
Arciform is a Portland-based ADU design/build firm specializing in accessory dwelling units, including garage conversions, detached ADUs & in-law suites. They handle permits, historic properties & full construction.
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Environs
3240 SW Sherwood Pl, Portland, OR 97201
11.3 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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JCS Construction LLC
Colton, OR 97017
14.6 miles
JCS Construction LLC builds custom ADUs in Oregon, including detached backyard cottages, granny flats, garage conversions, basement conversions, and pole building ADUs. They handle both standard and non-traditional structures with quality craftsma... read more
Integrity Timber Frame (ITF)
2455 Northwest Campus Drive, Estacada, OR 97023
12.1 miles
Integrity Timber Frame offers custom prefabricated timber frame home, cabin, and ADU kits in South Dakota. Using their TruFit™ System and SIPs panels, they deliver strong, energy-efficient, sustainable structures with faster assembly and potenti... read more
Propel Studio
422 Northeast 79th Avenue, Portland, OR 97213
11.7 miles
Peton Construction LLC
6635 North Baltimore Avenue, Portland, OR 97203
18.2 miles
Peton Construction LLC, founded by Austin Peton in 2015, serves the Portland metro area with residential construction services including ADU builds, home additions, bathroom remodels, renovations, decks, and patio covers.
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Suite Additions Portland
11825 Southwest Greenburg Road, Tigard, OR 97223
10.4 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 solution... read more
Chumbley Construction
15408 NW Energia St, Portland, OR 97229
18.6 miles
Chumbley Construction is a full-service ADU contractor offering turn-key solutions including garage conversions, in-law suites, detached ADUs, and Airbnb-ready units. They handle permits, design, and construction. Free estimates available.
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Alta Casa
5123 Northeast 94th Avenue, Vancouver, WA 98662
20.8 miles
Alta Casa Remodeling is a Vancouver, WA ADU builder specializing in accessory dwelling units, garage conversions, in-law suites, and home additions. They also offer kitchen, bathroom, and full home remodels, backed by a one-year workmanship warran... read more
Emmert International
11811 Southeast Highway 212, Clackamas, OR 97015
4.8 miles
With over 50 years in residential & commercial construction, house lifting, and house moving - you can rest assured that your project will be handled with insight and care. At Emmert International, we’re here to make your ADU project a succe... read more
ReCraft Home Remodeling
1623 Southeast 6th Avenue, Portland, OR 97214
10.9 miles
ReCraft Home Remodeling is a Portland-based contractor specializing in whole house remodels, kitchen, bathroom, basement renovations, and ADU construction, known for clear communication, careful planning, and on-time, on-budget delivery.
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SQFT Studios
1018 Southeast 8th Avenue, Portland, OR 97214
11.5 miles
SQFT Studios, founded in 2015 by Architect Eli Green, is a Portland-based ADU builder specializing in detached ADUs, garage conversions, backyard cottages, and guest suites, with 10+ years of experience.
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Neil Kelly Inc
804 North Alberta Street, Portland, OR 97217
14.7 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
Other cities in Oregon
What you need to know
ADU Contractors in Clackamas, Oregon: Building in Unincorporated Clackamas County
Clackamas, Oregon is a unique unincorporated community located in Clackamas County, situated southeast of Portland along the Willamette River. Because Clackamas is unincorporated, ADU projects here fall under Clackamas County jurisdiction rather than a city government, which means working with experienced local ADU contractors who understand county-specific zoning codes and permitting processes is absolutely essential. This distinction makes hiring knowledgeable ADU contractors in Clackamas, Oregon a critical first step for any homeowner looking to add an accessory dwelling unit to their property.
Clackamas County ADU Regulations Your Contractor Must Know
ADU contractors operating in Clackamas must navigate the Clackamas County Zoning and Development Ordinance (ZDO). The county permits ADUs in most residential zones, including R-2.5, R-5, R-7, R-10, and R-15 zones. Key regulations that your ADU contractor must be familiar with include:
- ADUs must comply with maximum size limitations, typically capped at 800 square feet or 75% of the primary dwelling's square footage, whichever is less
- Both attached and detached ADUs are permitted, as well as garage conversions
- Setback requirements vary by zone and must be carefully reviewed before design begins
- Owner-occupancy requirements may apply depending on the specific zoning district
- Separate utility connections and addressing may be required by the county
The ADU Permitting Process in Clackamas County
Skilled ADU contractors in Clackamas will guide homeowners through the Clackamas County Development Services permitting process. This includes submitting detailed site plans, architectural drawings, and ensuring compliance with Oregon's statewide building codes. Oregon's House Bill 2001 has also expanded ADU allowances statewide, and a qualified contractor will know how these state-level changes interact with local county rules. Permit timelines in Clackamas County can vary, so working with a contractor experienced in local processes helps avoid costly delays.
Why Hire a Local ADU Contractor in Clackamas, Oregon?
Choosing a locally experienced ADU contractor in Clackamas offers significant advantages. Local contractors understand the area's soil conditions, proximity to flood zones near the Willamette River, and the specific infrastructure considerations of unincorporated Clackamas. They also maintain established relationships with Clackamas County inspectors and planning staff, which can streamline your project considerably.
What to Look for in Clackamas ADU Contractors
- Valid Oregon Construction Contractors Board (CCB) license
- Proven experience with Clackamas County permitting and zoning
- Portfolio of completed ADU projects in the greater Clackamas area
- Strong references from local homeowners
- Transparent, detailed project estimates and timelines
Whether you're planning a detached backyard cottage, a garage conversion, or an attached ADU, partnering with the right ADU contractor in Clackamas, Oregon ensures your project meets all county requirements while maximizing your property's value and livability.