Carport Permit Requirements in Tennessee (2025)
A complete Tennessee homeowner guide to carport permit requirements — which counties require them, how much they cost, what setbacks apply, and how to apply successfully.
| Quick Reference | |
|---|---|
| Exemption Threshold (Detached) | 144 sq ft in most counties |
| Attached Carport | Permit Required — No Exemption |
| Typical Permit Fee | $75–$200 |
| Key Rule | Follows IRC 2018; Metro Nashville requires permit for all structures |
Tennessee Carport Permits: State Code with Local Variations
Tennessee adopts the International Residential Code (IRC) as its state building code, enforced through county building departments. The standard exemption threshold in most Tennessee unincorporated county areas is 144 sq ft for detached structures. Metro Nashville and Memphis impose stricter requirements within their city limits.
Key Tennessee Jurisdictions
| County/City | Threshold | Typical Fee | Notes |
|---|---|---|---|
| Davidson County (Nashville) | Metro Nashville: permit for all structures with footings | $100–$250 | Metro Nashville Codes Department handles all permitting; online portal available |
| Shelby County (Memphis) | City: permit required; unincorporated: 144 sq ft | $100–$200 | City of Memphis Development Services handles urban permits |
| Knox County (Knoxville) | 144 sq ft unincorporated; City of Knoxville varies | $75–$175 | Knox County has online permit application system |
| Williamson County (Brentwood/Franklin) | 144 sq ft unincorporated; cities vary | $100–$200 | Fast-growing county; Brentwood and Franklin have high HOA density |
HOA Rules in Tennessee Suburbs
The suburban communities surrounding Nashville (Franklin, Brentwood, Spring Hill, Nolensville) have dense HOA coverage, with many newer subdivisions prohibiting or heavily restricting carports. Always check your CC&Rs before starting the permit process in Middle Tennessee suburbs.
Tennessee Application Process
Tennessee county building departments generally have a straightforward application process for residential carports. A site plan, completed application form, and manufacturer's specifications (for prefab kits) are typically sufficient. Review times: 5–10 business days in most counties. See our step-by-step application guide for what to prepare.
Free: Carport Permit Application Checklist
Print before visiting your building department — covers every document and question to address upfront.
Download Free →FAQs: Tennessee Carport Permits
In most Tennessee counties, yes. Standard metal carport kits anchored with concrete require permits. The typical threshold is 144 sq ft in most counties for detached structures only — and most standard carport sizes exceed this. Call your county building department to confirm your specific situation.
Most Tennessee counties review residential accessory structure permits in 5–14 business days. Submit a complete application — site plan, specs, and application form — to avoid delays from requests for additional information.
Setbacks vary by county and zone. Typical ranges: side yards 5–10 ft, rear yard 5–10 ft, front yard behind the dwelling's face. Use our setback calculator for an estimate, then confirm with your county zoning department.