Hamilton County, Tennessee - Building Inspection Department

Hamilton County, Tennessee

county

4005 Cromwell Road, Chattanooga, TN 37421

Required

Hamilton County's Building Inspection Department permits the unincorporated county plus those parts of the county within municipalities that have not adopted and are not enforcing their own building codes -- explicitly NOT the City of Chattanooga, which enforces its own adopted code. A building permit is required for "any new, alteration, addition or repair to a structure" (see repair_permit_threshold for the narrow list of exemptions). Property owners may pull their own permit for their own residence, limited to one single-family residence every two years, for their own use and not for resale, lease, or rent; anyone else hired to do the work is treated as a prime contractor or construction manager subject to license requirements. All inspections must be called in one business day in advance, before 3:00 p.m., and all permits, preliminary reports, and reviews must be approved with no holds before any inspection can be scheduled. Online permit applications and payment are handled through the county's own Building Inspection Applications portal; property owners who are not licensed contractors may apply online but must visit the office in person to pay application fees.

2018 International Residential Code (IRC), per Hamilton County's own Building Inspection Department page: the county adopted this and companion 2018-edition codes (International Building, Plumbing, Mechanical, Fuel Gas, Fire, Swimming Pool & Spa, and Energy Conservation Codes, plus the 2020 National Electrical Code, 2017 ANSI Accessibility Code, and 2018 NFPA Life Safety Code 101) effective January 1, 2022. The county's own "Codes & Editions" inspection-checklist document, distributed to all contractors and homeowners, lists the identical 2018-edition code set, corroborating the department page.

Not required — Not established as a sourced affirmative. The county's own "Codes & Editions" / inspection-checklist document (distributed to all contractors and homeowners) and the Department's own Building Inspections page, both read in full, enumerate the county's Building, Plumbing, Electrical, Gas Piping, and Mechanical inspection stages by name (Footing, Basement Slab, Rough-In on Framing, Insulation, Final on Structure, and a contractor-requested Combined inspection) and name no roof-covering or mid-roof inspection stage among them. Recorded as a sourced negative rather than a guess.

No dollar-value or size threshold is published for repair work. The county's own Building Inspection Department FAQ states a permit is required for "any new, alteration, addition or repair to a structure," and the only listed exemptions are unrelated to roofing: storage buildings 10'x20' or smaller without plumbing or electrical, fences not over 7' in height, interior finish work (painting, papering, tiling, carpeting, cabinets, countertops), small above-ground prefabricated pools, playground equipment, and low sidewalks/driveways. No re-roof-specific minimum is stated.

9.25% combined rate for Hamilton County, Tennessee (7% Tennessee state sales tax plus 2.25% local option sales tax), per Avalara's published county rate table. The Tennessee Department of Revenue publishes local sales tax rates only through an interactive Tableau map tool (embedded at tn.gov's local sales tax rate page) rather than a plain readable document; Avalara is named here as the aggregator carrying the rate that mirrors that DOR tool.