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
Local builders are teams that specialize in residential structures within your specific region. They understand the particular building codes and environmental requirements of your city, which helps prevent delays during inspections. You need a local builder when you are ready to break ground and want a partner who knows the local permit office and site conditions well. This ensures your project stays on track and follows all area-specific rules.
Frequently asked in St. Petersburg
What are the disadvantages of ADUs in St. Petersburg?
In St. Petersburg, potential downsides can include the initial investment cost and the time needed for permitting and construction. You’ll also want to consider any impact on your property's current landscaping or parking availability. Discussing these with a local specialist is key.
How much does an ADU cost in Florida?
What are the rules for ADUs in St. Petersburg?
Is an ADU allowed on my St. Pete property?
Generally, ADUs are permitted in many areas of St. Petersburg, but it's crucial to verify your property's specific zoning. Local ordinances dictate where and how they can be built. The pros who serve St. Petersburg can help confirm eligibility for your address.
Can I get advice on ADU design in St. Petersburg?
What about ADU permits 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. Pete, The EDGE District, Gulfport, Tierra Verde, Old Northeast, Kenwood — and every surrounding area.
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