What are the Commercial Mechanical & HVAC permit rules in Tennessee?

Tennessee enforces trade permit fee schedules determined by local AHJ building departments per county. General contractors and sub-trades must maintain active state licenses and bond filings ($10,000–$50,000).

Are sub-trade contractor surety bonds required in Tennessee?

Yes. Most Tennessee municipal building departments require trade contractors to file an active license bond prior to permit issuance.

❄️ STATEWIDE TRADE HUB (TN) 1 County Workstations

Tennessee Commercial Mechanical & HVAC Permit Guide

HVAC tonnage rates, ductwork submittals, rooftop replacements, and COMcheck forms. Compare municipal fee structures, plan check add-on rates, and contractor bond thresholds across Tennessee.

Tennessee Commercial Mechanical & HVAC County Workstations

Select a county building department to calculate exact trade permit fees & bond rules

Davidson County (Nashville)

Metro Nashville Codes Administration

2026 Verified

Plan Review Rate: 40%

Tech Surcharge: 4%

Mandatory Surety Bond: $10,000

Open Davidson County (Nashville) Commercial Mechanical & HVAC Workstation →