What is mechanical work?
Mechanical work on one- or two-family dwellings includes work on heating, cooling, or ventilation systems, including bath vents and woodstoves. Installation, alteration, or repair of gas piping between the meter and an appliance or other equipment, including all liquefied petroleum gas piping, is also considered mechanical work.

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1. When does my permit expire?
2. When are permits required and who is responsible?
3. Do I need a permit to build a playhouse or a garden/storage shed?
4. When do I need a building (structural) permit?
5. What structural work can I do without a permit?
6. When do I need an electrical permit?
7. What electrical work can I do without a permit?
8. When do I need a plumbing permit?
9. What plumbing can I do without a permit?
10. When do I need a permit for mechanical work?
11. What is mechanical work?
12. Why do I have to buy a permit to build on my own property?
13. How can I see if my contractor is licensed?