Affordable accessory dwelling unit — St. Petersburg, FL

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

Building an affordable unit often comes down to choosing efficient designs and pre-planned layouts rather than full custom builds. By simplifying utility connections and minimizing complex excavation, you can keep your project within a reasonable budget. While we aim to make the process accessible, the final bill depends on your specific site conditions. Exact pricing confirmed free on the call.

Frequently asked in St. Petersburg

Also serving nearby: Clearwater · Tampa · Lakeland · Plantation · North Port

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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, Old Northeast, Crescent Lake, Beach Drive — and every surrounding area.