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What you need to know:

Plumbing plans, specifications and a fee must be submitted for modification or installation of all plumbing systems that serve the public or that serve a considerable number of persons. Some of these facilities include but are not limited to restaurants, resorts, hotels, vacation home rentals, grocery stores, department stores, offices, warehouses, shops, churches, hospitals, nursing homes, assisted living facilities and housings with five units or more, such as apartments and condominiums (excluding townhomes built to the International Residential Code (IRC) with individual water and sewer services to each dwelling unit).

Details about projects considered "minor remodels."


What you can do:

Submit plans online with ePlans

Electronic submission avoids the time and costs associated with printing and shipping plans. Visit the ePlans -- electronic plan review page for details. The plan review application includes an electronic submission option.

About plumbing plan review

Plan review includes all interior plumbing, building sewer and water service connections within the property lines and storm water drainage systems. A few of the items we review include adequate pipe sizing, proper pipe connections, approved pipe material, fixture specifications and backflow prevention devices. Our agency must give you complete plan approval before installation of any portion of your plumbing system may begin. View more information in our frequently asked questions about plumbing plan review.

Please include the following:

  • utility site plan (if new services are to be installed)

  • floor plan (show fixtures/horizontal waste piping/pipe sizes)

  • roof plan (if internally piped roof drains are proposed)

  • water riser diagrams

  • soil, waste and vent riser diagrams 

  • plumbing specifications

  • designer’s signature and license number (on each plan sheet)

Plan review agreements

View a list of cities have plan review agreements with our agency to review plans in lieu of a review by our agency. However, there are some projects that still require state review. Learn more about plan review agreements.


  • To learn your position in the plan review queue, call our automated line at 651-284-5043.

  • For questions about applications, plan review and permitting, call 651-284-5063 or

  • For online registration and account questions, contact