General Information

A Refrigeration License allows the holder to install any device using refrigerant for either comfort cooling or refrigeration of products (central air conditioners, chillers, heat pumps, walk-in coolers, walk-in freezers, refrigerated cases, etc.)

Code Requirements

See Chapter 369 of the Saint Paul Legislative Code for information about building trade business licenses.

Application Requirements

You must submit the following:

If you have questions, contact the Mechanical Inspection Department at 651-266-9004, or email the DSI Message Center.


The annual fee for trade licenses is $188.00 each.


All Trade Licenses expire on December 1 and may be renewed annually.

Last Edited: October 9, 2023