Required Projects

2018 International Building Code: 105.1 Required permits

Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish, or change the occupancy of a building or structure, or to erect, install, enlarge, alter, repair, remove, convert or replace any electrical, gas, mechanical or plumbing system, the installations of which is regulated by this code, or to cause any such work to be done, shall first make application to the building official and obtain the required permit.

2018 International Building Code: 105.2 Work exempt from permit

Building:

One-story detached accessory structures used as tool and storage sheds, playhouses and similar uses, provided the floor area is not greater than 120 square feet
Fences not over 7 feet high
Oil derricks
Retaining walls that are not over 4 feet in height measured from the bottom of the footing to the top of the wall, unless supporting a surcharge or impounding Class I, II or IIIA liquids.
Water tanks supported directly on grade if the capacity is not greater than 5,000 gallons and the ratio of height to diameter or width is not greater than 2:1.
Sidewalks and driveways not more than 30 inches above the adjacent grade, and not over any basement or story below and are not part of an accessible route.
Painting, papering, tiling, carpeting, cabinets, counter tops and similar finish work.
Temporary motion picture, television and theater stage sets and scenery.
Prefabricated swimming pools accessory to a Group R-3 occupancy that are less than 24 inches deep, are not greater than 5,000 gallons and are installed entirely above ground.
Shade cloth structures constructed for nursery or agricultural purposes, not including service systems.
Swings and other playground equipment accessor to detached one- and two-family dwellings.
Window awnings in Group R-3 and U occupancies, supported by an exterior wall that do not project more than 54 inches from the exterior wall and do not require additional support.
Nonfixed and movable fixtures, cases, racks, counters, and partitions not over 5 feet 9 inches in height.

Gas:

Portable heating appliance
Replacement of any minor part that does not alter approval of equipment or make such equipment unsafe.

Mechanical:

Portable heating appliance.
Portable ventilation equipment.
Portable cooling unit.
Steam, hot or chilled water piping within any heating or cooling equipment regulated by this code.
Replacement of any part that does not alter its approval or make it unsafe.
Portable evaporative cooler.
Self-contained refrigeration system containing 10 pounds or less of refrigerant and actuated by motors of 1 horsepower or less.

Plumbing:

The stopping of leaks in drains, water, soil, waste or vent pipe, provided, however, that if any concealed trap, drain pipe, water, soil, waste or vent pipe becomes defective and it becomes necessary to remove and replace the same with new material, such work shall be considered as new work and a permit shall be obtained and inspection made as provided in this code.
The clearing of stoppages or the repairing of leaks in pipes, valves or fixtures and the removal and reinstallation of water closets, provided such repairs do not involve or require the replacement or rearrangement of valves, pipes or fixtures.

Electrical:

All Electrical is permitted by the state of Tennessee and needs to be permitted and inspected.

https://www.tn.gov/commerce/fire/permits-licensing/fire-electrical-permits.html