Collierville, TN Building Safety: Electrical Permits (2026)

Two sections of the Collierville Code of Ordinances work together. Section 150.070 amends the 2018 International Residential Code, and its amended Section R105.1 sets the permit rule: any owner or authorized agent who intends to erect, install, enlarge, alter, repair, remove, convert or replace any electrical, gas, mechanical, plumbing system or irrigation system, the installation of which is regulated by that code, or to cause any such work to be done, shall first make application to the building official and obtain the required permit. The same section deletes the model code's building exemptions 1 through 4 from the work-exempt-from-permit list, leaving sidewalks and driveways on private property not more than 30 inches above adjacent grade as an exemption.

The electrical standard itself is the 2017 National Electrical Code. One- and two-family dwelling electrical wiring must be installed in compliance with NFPA 70, 2017 National Electrical Code with Town of Collierville amendments. Section 150.080 lists those amendments. Among them, anyone designing or installing new electrical systems or adding load to an existing system is responsible for determining that the main service equipment, feeders and all equipment are of the proper size for the total connected load. Inside one- or two-family or multi-family dwellings, aluminum conductors are prohibited except as permitted in Article 334. Branch circuit load calculations must be provided as part of or prior to the Rough Electric inspection, and installation of a concrete encased electrode must be verified by a Town electrical inspection or by an engineer before concrete is placed.

Appeals of the code official's orders or determinations go to the Town of Collierville Construction Board of Adjustments and Appeals, which Section 150.080 names in the amended NEC Section 90.10.