Accessory dwelling unit construction — St. Petersburg, FL
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
This is the physical process of building your unit, from pouring the foundation and framing the walls to installing plumbing and electrical. Construction quality varies based on your choice of materials and the complexity of the site design. Proper construction ensures your unit is insulated, safe, and meets all energy efficiency standards. You need this service when you have your permits ready and are prepared to build. Exact pricing confirmed free on the call.
Frequently asked in St. Petersburg
What are prefabricated ADUs like in St. Pete?
Prefabricated ADUs in St. Petersburg offer a quicker build. These units are built off-site in a factory. Then, they're brought to your St. Petersburg property for assembly. It's a popular choice for speed and consistent quality. Ask us about these options.
How much does an ADU generally cost in St. Petersburg?
What are the rules for backyard ADUs in St. Petersburg?
Can I get a local ADU specialist in St. Petersburg?
What goes into the construction cost of an ADU in St. Petersburg?
Are homes with in-law suites common in St. Petersburg?
Homes with in-law suites are becoming more popular in St. Petersburg. They offer independent living space for relatives. Adding one can also create rental income. Talk to us about building this for your home.
How do I find the best ADU builder 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, Old Northeast, Kenwood, Coquina Key, Gulfport — and every surrounding area.
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