ADU Permits in Tampa Bay: What You’ll Need (and What Usually Gets Flagged)

Permitting is where most ADU projects either stay smooth—or get stuck—especially here in the Tampa Bay area (including St. Petersburg).

Here’s what ADU permits typically involve in Florida, and the common issues that plan reviewers and inspectors' flag. If you’re in St. Petersburg or anywhere around Tampa Bay, the details below will feel very familiar.

Typical permit categories for ADUs

• Building/structural

• Electrical

• Plumbing

• Mechanical (HVAC)

• Zoning review (setbacks, lot coverage, height)

• Sometimes: flood zone or coastal requirements

  
  

Common plan-review flags

• Setback/lot coverage questions

• Egress and window sizing

• Fire separation (especially for conversions)

• Wind-load notes and tie-down details

• Utility connection details

  
  

Inspection checkpoints homeowners should know

Expect inspections at key stages: foundation/slab, framing, rough-in MEP, insulation (if required), and final. We see these same questions come up all the time with homeowners across St. Petersburg and the Tampa Bay area.

How we reduce permit friction

We align design, engineering, and scope early—so you’re not redesigning mid-stream.

Next step

If you share your city/county and whether it’s detached or a conversion, we can outline the likely permit path and timeline. Phill's Home Construction is always happy to help you make sure your needs are met!