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Ripples of waterBefore any building or construction may begin, a sewer use and drainage permit (SUDP) must be obtained for each building and/or individual tenant associated with a project.

As of August 2018, the SUDP application has been combined with electronic building permit applications for a more streamlined submittal process and faster review times for many SUDP customers. SUDP reviews will now start when a building permit application is received.

How to apply

Submit SUDP and building plans at the same time through e-permits.

  1. Sign in to e-permits
  2. Select Development Services > Apply for a permit
  3. Select a Permit Type > Building Log
    • For garages: On the project details page, under project information, select the following:
      • Project Classification: Single Family/Duplex Residential 
      • Project Scope: New Accessory Structure
  • Save all files as PDFs and name them: DocumentName_Address_Date.pdf (e.g., UtilityPlan_201WColfax_11-1-2017.pdf)
  • All plans, reports, surveys, and other documents prepared by an architect, engineer, or surveyor must bear their seal on each sheet and a valid electronic signature on the cover page.

Important Note:

If the work does not require building permits, or if you already applied for a building permit, use one of the following methods to apply for an SUDP review:

  1. Submit SUDP materials in person to the SUDP counter 
  2. Submit by email to (include your building log number if you have one)

What to submit

Guidelines for zoning/building code reviews

Guidelines for residential SUDP

Forms for residential SUDP

Guidelines for building code reviews

Guidelines for commercial SUDP

Forms for commercial SUDP

Additional resources

SUDP invoices must be paid prior to December 31 of the invoice year. Additional fees at the new year's rate may be assessed and payment required for any prior-year invoices.

For information on standard fees, see Public Works / SUDP on the Building and Land Development Fees webpage.

Before installing or replacing a grease interceptor, consult these resources:

  • Sample grease interceptor designs: PDF or DWG

Grease interceptors will need a plumbing and an SUDP review.

In a restaurant or commercial kitchen, a change to the type of cuisine served, an increase in seating capacity, or a change in the cooking appliances could all have an impact on grease interceptor sizing.

For projects that require a grease interceptor, make sure to connect all fixtures in the kitchen and food prep areas to the grease waste sewer line, which is then directed to the appropriately sized grease interceptor, prior to connecting to the domestic sanitary sewer system for the building. Bar areas, beverage stations, restrooms, and any other area that is not in the kitchen or intended for food prep should NOT be directed to the grease waste sewer line, but rather connected directly to the domestic sewer system for the building. 

The following technical documents are sample design standards:


The following technical documents can be downloaded from Department of Transportation & Infrastructure, Right of Way Services page Manuals and Regulations or Document Center.

  • Sanitary design and technical criteria manual 
  • Sanitary sewer master plan
  • Storm drainage design and technical criteria manual 
  • Storm drainage master plan
  • Wastewater detail and technical specifications 
  • Wastewater standard detail drawings

Set up your  inspections  for all your Wasterwater sewer use and drainage permits (SUDP).


Contact Us

Sewer Use and Drainage Permitting  
720-865-3060 (new number)

(Please leave a detailed message including the address of the property.)

Counter hours and location:
8 a.m. - 3:30 p.m., Monday - Friday
(Appointments are recommended)

Wellington Webb Municipal Office Building
201 W. Colfax Ave., Dept 203
Denver, CO 80202