Accessory dwelling unit permit cost — Columbus, OH
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
Frequently asked in Columbus
Who are the best ADU builders to consider in Columbus?
What does 'Accessory Dwelling Unit' actually mean for Columbus homeowners?
An Accessory Dwelling Unit (ADU) in Columbus is a second, smaller living space on a single-family home lot. It can be attached or detached, offering options for family members, guests, or rental income. Think of it as a separate apartment or cottage within your property lines in Columbus. The pros can explain the specific types allowed by Columbus zoning.
Are there grants available for accessory dwelling unit projects in Columbus?
How do I get an ADU quote for my property in Columbus?
What are the advantages of building accessory dwelling units in Columbus?
Building accessory dwelling units in Columbus offers several advantages, including increased housing options and potential rental income. They provide flexible living spaces for aging parents, returning children, or tenants. ADUs can also boost your property's value. Pros in Columbus can help you understand how an ADU fits your specific needs and neighborhood.
Can I find affordable ADU options for my Columbus home?
How do I find accessory dwelling unit builders near me in Columbus?
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: Clintonville, Short North, German Village, Grandview Heights, Olde Towne East — and every surrounding area.
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