Mechanical Permits and Inspections
A residential mechanical permit is required to add, replace, repair or alter air conditioning, heating or ventilation equipment, as well as related work such as minor modifications of gas piping, electrical work, etc. before any work can begin. Mechanical permits are based upon valuation of work for mechanical systems or equipment. 

For information regarding the cost of a mechanical permit call the permit issuance counter at 949-724-6313. Additional costs may be required dependent on the nature of the work or if the project is establishing new electrical or gas service or adding to existing service. 

Once mechanical work has been completed, you can request an inspection. An inspection is included in the cost of the permit and is mandatory before a Certificate of Occupancy can be issued. 

Inspections may be requested through our automated inspection request line by calling: (949) 724-6501, or by calling our inspection desk at 949-724-6396. Inspection request information may be found here.  

When requesting an inspection, please give relevant permit numbers, the time, date, the place you would like the inspection and the name of the contractor. Allow a minimum of one workday from the time of your request for a mechanical inspector to visit your site. 

After the inspection has been completed, a sticker will be left in a central location on the premises that indicate the date of inspection and whether or not the work passed. 

For a permit application, inspection or more information about ways the Department can assist you, click here.