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.
About this service
A modular unit is built in a factory and then transported to your property to be finished on a foundation. You should consider this if you want a faster construction timeline with less disruption to your daily life. It is an efficient way to add high-quality space to your lot.
Frequently asked in Lexington-Fayette
What should I have ready before an ADU consultation in Lexington-Fayette?
How dense is Lexington-Fayette for ADU placement?
What makes a 'best' accessory dwelling unit in Lexington-Fayette?
How much does an ADU quote typically cover in Lexington-Fayette?
What are the considerations for accessory dwelling unit homes in Lexington-Fayette?
What's involved in accessory dwelling units ADUs construction?
Are prefabricated accessory dwelling units an option in Lexington-Fayette?
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Lexington-Fayette — population 320,154.
Neighborhoods served in Lexington-Fayette: Chevy Chase, Woodford Place, South Hill, Masterson Station, Beaumont, Ashland Park — and every surrounding area.
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