Last updated: September 24, 2026
What affects the price
Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.
About this service
The expense of building an ADU varies based on site preparation, whether you need to run new sewer or electrical lines, and the level of interior customization you choose. Larger custom builds naturally require more materials and labor than simpler conversions. We provide exact pricing confirmed free on the call.
Frequently asked in Columbus
What are the disadvantages of ADUs in Columbus?
Potential drawbacks include the upfront investment, possible utility cost increases, and the complexities of the permitting process in Columbus. You'll also want to consider how an ADU might affect your property's privacy or the aesthetics of your yard. However, many find these are manageable with good planning and professional assistance.
How much does an ADU cost in Ohio?
The cost to build an ADU in Ohio, including Columbus, depends greatly on the size, design, and materials used. A basic detached unit might have a different price point than a garage conversion or an addition. Local construction costs and any unique site challenges will also factor in. A personalized quote will give you the most accurate picture.
What are the rules for ADUs in Ohio?
Ohio has been increasingly adopting ADU-friendly legislation, but specific rules often vary by municipality. Columbus has its own zoning codes and building requirements that you'll need to follow. These typically cover things like minimum dwelling size, parking, and utility connections. It's important to work with someone familiar with Columbus's specific regulations.
Is ADU allowed in Maryland?
This page focuses on Columbus, Ohio. ADU regulations are highly localized, so you would need to check the specific laws for Maryland. Many areas are becoming more open to ADUs, but it's essential to verify the rules in your target location. Consulting with local building departments or ADU specialists is recommended.
What are the rules for ADU in California?
This content is for Columbus, Ohio. California has specific state laws and local ordinances governing ADUs, often designed to increase housing availability. These rules can include requirements for lot size, setbacks, and parking. If you're interested in California, you'll need to research their specific regulations.
California has had various programs to support ADU development. For opportunities in Ohio or Columbus, you would need to investigate local and state funding options that may be available for homeowners undertaking such projects.
Also serving nearby: Dayton · Cincinnati · Akron · Toledo · Cleveland
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Columbus — population 913,175; about 4,137 residents per square mile across 220.7 sq mi. ZIP codes covered include 43085, 43201, 43202, 43203, 43204, 43205, 43206, 43207.
Neighborhoods served in Columbus: Short North, German Village, Victorian Village, Olde Towne East, Grandview Heights, Clintonville — and every surrounding area.
Areas we serve
Browse by state, then city.
Alabama (4)
All of Alabama · Birmingham · Huntsville · Mobile · Montgomery
Alaska (1)
Arizona (8)
All of Arizona · Chandler · Gilbert · 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 · Long Beach · Los Angeles · Modesto · Moreno Valley · Oakland · Oceanside · Ontario · Oxnard · 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 (9)
All of Florida · Cape Coral · Fort Lauderdale · Hialeah · Miami · Orlando · Pembroke Pines · Port St. Lucie · Tallahassee · Tampa
Georgia (3)
All of Georgia · Atlanta · Augusta-Richmond County · Columbus
Hawaii (1)
Idaho (1)
Illinois (2)
Indiana (2)
Iowa (1)
Kansas (2)
Kentucky (2)
All of Kentucky · Lexington-Fayette · Louisville/Jefferson County
Louisiana (3)
Maryland (1)
Massachusetts (1)
Michigan (2)
Minnesota (2)
Missouri (3)
Nebraska (2)
Nevada (4)
All of Nevada · Henderson · Las Vegas · North Las Vegas · Reno
New Jersey (1)
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 (5)
All of Tennessee · Chattanooga · Clarksville · Knoxville · Memphis · Nashville-Davidson metropolitan government (balance)
Texas (13)
All of Texas · Amarillo · Arlington · Brownsville · El Paso · Fort Worth · Frisco · Garland · Grand Prairie · Houston · Lubbock · McKinney · Plano · San Antonio
Utah (1)
Virginia (4)
All of Virginia · Newport News · Norfolk · Richmond · Virginia Beach
Washington (4)
All of Washington · Seattle · Spokane · Tacoma · Vancouver
