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
Getting an ADU quote is the process of defining exactly what you want to build based on your property’s layout. Costs typically range from thousands to tens of thousands depending on site prep, utility trenching, and finishes. We look at your land, current electrical capacity, and foundation requirements to provide a clear figure. This step helps you understand the investment needed before breaking ground. Exact pricing confirmed free on the call.
Frequently asked in St. Petersburg
How can I build an affordable ADU in St. Petersburg?
What ADU services are available in St. Petersburg?
Can an ADU serve as an in-law suite in St. Petersburg?
Are there specific ADU rules for Accessory Dwelling Units in Florida?
How can I use an ADU for rental income in St. Petersburg?
What are the benefits of a prefab ADU in St. Petersburg?
Where can I find an ADU contractor in St. Petersburg?
Also serving nearby: Clearwater · Tampa · Lakeland · Plantation · North Port
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of St. Petersburg — population 263,553; about 4,264 residents per square mile across 61.8 sq mi.
Neighborhoods served in St. Petersburg: Downtown St. Petersburg, The EDGE District, Old Northeast, Crescent Lake, Gulfport — and every surrounding area.
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