Homeowners / homesteaders may take out a permit to do plumbing, gas fitting, and inside water piping work on one and two-family dwellings. For two-family dwelling units the homeowner / homesteader may only do the general plumbing work in the side / half that they live in.
Homeowners / homesteaders are not allowed to do their own plumbing for the following:
- New single-family dwellings
- New duplex or any other new residential unit
- Vacant buildings
- Commercial property
Licensed plumbing contractors with the City of St. Paul must obtain permits to do any plumbing work.