Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
Building an ADU involves costs for permits, site prep, foundation, framing, plumbing, and electrical work. Prices fluctuate based on whether you choose a custom design or a pre-planned layout, as well as the complexity of connecting to existing city utilities. Exact pricing confirmed free on the call.
Frequently asked in Eugene
What are the disadvantages of ADUs in Eugene?
Potential disadvantages can include the upfront financial investment and the construction timeline. You'll also need to comply with Eugene's specific land use regulations and building codes. However, with experienced guidance, these aspects are easily managed. Many homeowners find the long-term benefits significantly outweigh these initial considerations.
How much does an ADU cost in Oregon?
What are the rules for ADUs in Eugene?
Eugene has specific regulations for ADUs concerning size, height, setbacks, and parking requirements. These rules are designed to ensure ADUs fit well within existing neighborhoods. The pros you'll connect with are well-versed in these local ordinances and can guide your project to ensure full compliance. They'll clarify what's permissible on your lot.
Is an ADU allowed in Eugene?
Yes, Accessory Dwelling Units are permitted in Eugene, provided they meet all the city's zoning and building code requirements. These regulations aim to foster responsible development and maintain neighborhood character. The specialists are knowledgeable about these guidelines and can confirm your property's eligibility. They'll help you understand the feasibility.
What are the rules for ADUs in Oregon?
Oregon has state laws that encourage ADU development, but Eugene also has its own local ordinances that must be followed. These can include specific details on lot coverage, accessory dwelling unit placement, and required amenities. The experts understand both state mandates and local Eugene specifics. They'll ensure your project meets all criteria.
Can I get a grant for an ADU in Oregon?
While there aren't widespread state grants specifically for ADUs in Oregon, some local programs or financing options might exist. It's best to discuss potential funding avenues with the specialists. They can advise on what might be applicable for your specific situation and ADU project in Eugene. They'll help explore possibilities.
Also serving nearby: Salem · Bend · Beaverton · Hillsboro · Portland
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Eugene — population 177,899; about 4,002 residents per square mile across 44.4 sq mi. ZIP codes covered include 97401, 97402, 97403, 97404, 97405, 97408, 97440.
Neighborhoods served in Eugene: Whiteaker, South Hills, Goodpasture Island, Willakenzie, Spencer Butte — and every surrounding area.
Areas we serve
Browse by state, then city.
Alabama (4)
All of Alabama · Birmingham · Huntsville · Mobile · Montgomery
Alaska (1)
Arizona (9)
All of Arizona · Chandler · Gilbert · Glendale · Mesa · Peoria · Phoenix · Scottsdale · Tempe · Tucson
Arkansas (1)
California (29)
All of California · Anaheim · Bakersfield · Chula Vista · Elk Grove · Fontana · Fremont · Fresno · Garden Grove · Glendale · Huntington Beach · Lancaster · Los Angeles · Modesto · Moreno Valley · Oakland · Oceanside · Ontario · Oxnard · Palmdale · Rancho Cucamonga · Riverside · Sacramento · San Bernardino · San Diego · San Francisco · San Jose · Santa Clarita · Santa Rosa · Stockton
Colorado (4)
All of Colorado · Aurora · Colorado Springs · Denver · Fort Collins
District of Columbia (1)
Florida (10)
All of Florida · Cape Coral · Fort Lauderdale · Jacksonville · Miami · Orlando · Pembroke Pines · Port St. Lucie · St. Petersburg · Tallahassee · Tampa
Georgia (2)
Hawaii (1)
Idaho (1)
Illinois (2)
Indiana (2)
Iowa (1)
Kansas (2)
Kentucky (2)
All of Kentucky · Lexington-Fayette · Louisville/Jefferson County
Louisiana (3)
Massachusetts (2)
Michigan (2)
Minnesota (2)
Missouri (3)
Nebraska (2)
Nevada (4)
All of Nevada · Henderson · Las Vegas · North Las Vegas · Reno
New Jersey (2)
New Mexico (1)
New York (4)
All of New York · Buffalo · New York · Rochester · Yonkers
North Carolina (7)
All of North Carolina · Cary · Charlotte · Durham · Fayetteville · Greensboro · Raleigh · Winston-Salem
Ohio (4)
All of Ohio · Akron · Cleveland · Columbus · Toledo
Oklahoma (2)
Oregon (3)
All of Oregon · Eugene · Portland · Salem
Pennsylvania (2)
Rhode Island (1)
South Dakota (1)
Tennessee (6)
All of Tennessee · Chattanooga · Clarksville · Knoxville · Memphis · Murfreesboro · Nashville-Davidson metropolitan government (balance)
Texas (16)
All of Texas · Amarillo · Arlington · Austin · Brownsville · Dallas · El Paso · Fort Worth · Frisco · Garland · Grand Prairie · Irving · Laredo · Lubbock · McKinney · Plano · San Antonio
Utah (1)
Virginia (5)
All of Virginia · Chesapeake · Newport News · Norfolk · Richmond · Virginia Beach
Washington (4)
All of Washington · Seattle · Spokane · Tacoma · Vancouver
