When Are Trade Work Permits Required

A Trade Work permit (i.e. a permit for a project with only one trade) is required for the installation, extension, repair, or alteration of any plumbing system, heating or cooling equipment system, or electrical wiring, appliances or equipment.

Types of work covered under this permit include (but are not limited to) the installation, replacement, or repair of:

Heating and cooling equipment
Water heaters
Generators
Irrigation systems
Water or sewer lines
Emergency power restoration