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Accessory dwelling unit services — St. Petersburg, FL

Looking for accessory dwelling unit services in St. Petersburg, FL? Call AccessoryDwellingUnit Experts for a contact a provider — no obligation. Licensed adu builders serve St. Petersburg and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

Frequently asked in St. Petersburg

What are the disadvantages of ADUs?
How much does an ADU cost in Florida?

The cost of an ADU in Florida varies widely depending on the size, chosen materials, and the complexity of the design. Factors like site preparation and interior finishes significantly influence the final price. Getting a personalized quote tailored to your St. Petersburg property is the best approach.

What are the rules for ADUs in Florida?
Is an ADU allowed in St. Petersburg?

Yes, accessory dwelling units are generally allowed in St. Petersburg, with specific criteria to meet. These often involve lot size, existing structure requirements, and access to utilities. We can help determine if your property qualifies.

What are the rules for ADUs in California?

California has statewide laws promoting ADUs, often making them permissible by right if they meet size and setback standards. Local jurisdictions still have input, but state law sets a minimum. This is different from Florida's regulatory landscape.

California has implemented grant programs to assist with ADU construction costs, especially for affordable housing initiatives. These grants can substantially reduce the upfront financial burden. Such programs are specific to California and not applicable in Florida.

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

All cities in Florida →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

263,553residents
4,264per sq mile
—ZIP codes served

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, Beach Drive, The EDGE District, Old Northeast, Kenwood — and every surrounding area.

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