St. Petersburg, FL · Pinellas County
Ductwork Replacement in St. Petersburg, FL: Cost & Permits
What ductwork replacement actually costs in St. Petersburg, whether you need a permit, which inspections apply, and how long the job takes.
Verified August 2026
Typical local cost
$5,600
$2,600 – $12,400
per supply run
$250 – $600
Permit fee
$95 – $335
Pinellas County estimate
vs national
+3%
local labor & materials
Do you need a permit for ductwork replacement in St. Petersburg, FL?
Yes
Yes — a permit is required for ductwork replacement in St. Petersburg, FL. The work must be inspected before it can be closed out, and a licensed contractor generally has to pull the permit.
Large parts of Pinellas County sit in FEMA flood zones, which triggers substantial-improvement review on bigger remodels.
Cost breakdown in St. Petersburg
| Low endSimple scope, competitive bid | $2,600 |
|---|---|
| TypicalMost homeowners land here | $5,600 |
| High endComplex access, premium materials | $12,400 |
| per supply run | $250 – $600 |
| Permit fee estimate | $95 – $335 |
| Timeline | 1-3 days of work, 1-3 weeks including permitting |
Math: national baseline $2,500–$12,000 × St. Petersburg cost index 1.03. Permit fees use a 1.05 local multiplier. Estimates, not quotes.
What drives your price here
- Number of supply and return runs
- Flex duct versus rigid sheet metal
- Attic access and clearance
- Return air sizing corrections
- Removal of contaminated duct board
Permit process and inspections
| Permit required | Yes |
|---|---|
| Who pulls it | Licensed contractor |
| Inspections | Duct rough-in, Duct leakage test, Final mechanical inspection |
| Documents | Mechanical permit application, HVAC contractor license, Duct leakage test report |
| Apply | St. Petersburg permit portal |
Frequently asked questions
Does duct replacement need a permit in Florida?
Yes. Replacing a duct system requires a mechanical permit and a duct leakage test in most Florida jurisdictions, because duct leakage is regulated under the energy code.
Ductwork costs in nearby cities
Sources
Sources & verification
Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.
Page data quality: 100/100
- ✓ Verified permit status
- ✓ Official source linked
- ✓ Local cost range
- ✓ Inspection detail
- ✓ Unique local rule
- ✓ Local fee estimate
- ✓ Useful FAQ
- ✓ Relevant calculator
- ✓ Internal links