Sewer Use and Drainage Permits | Denver Development Services

SEWER USE & DRAINAGE PERMITS (SUDP)

Ripples of water Before 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.

Sign in to e-permits
Select Development Services > Apply for a permit
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.
- Learn how to apply a valid electronic signature (PDF)

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:

Submit SUDP materials in person to the SUDP counter
Submit by email to WastewaterPermits@denvergov.org (include your building log number if you have one)

What to submit

Residential single family & duplex (2 unit) - includes forms

Guidelines for zoning/building code reviews

Residential Permitting Guide (PDF) for zoning/building application forms and log in checklists
Master/TA guide (PDF) for production homes only

Guidelines for residential SUDP

Submittal guidelines (PDF) - updated 12/6/18
Groundwater Dewater Permitting (PDF) - NEW
Pool Spa Entrance Requirements (PDF) - NEW
Residential additions (PDF)
Detached garages (PDF)
Also see "Requirements for specific project types" tab below for additional information.

Forms for residential SUDP

SUDP application (PDF) - This is not needed if you are submitting building application forms by email.
Minor SP application (PDF)
Swimming pool information sheet (PDF)
Disposal of swimming water (PDF)

Commercial and multi-residential (3 or more units) - includes forms

Guidelines for building code reviews

Commercial Building Permit Guide (PDF) for building application forms and log in checklists
Restaurants/commercial kitchens

Guidelines for commercial SUDP

Submittal guidelines (PDF) - updated 12/6/18
Groundwater Dewater Permitting (PDF) - NEW
Pool Spa Entrance Requirements (PDF) - NEW
Also see "Requirements for specific project types" tab below for additional information.
See "Standards and details" tab for sanitary and storm sewer design information, and grease interceptor sizing.

Forms for commercial SUDP

SUDP application (PDF) - This is not needed if you are submitting building application forms by email.
Industrial waste survey (PDF)
Minor SP application (PDF)
Swimming pool information sheet (PDF)
Disposal of swimming water (PDF)
Restaurants/commercial kitchens combined SUDP/health/building application (PDF) or SUDP-only Food & Beverage Questionnaire (PDF)

Sewer cut-off and repair entrance requirements

Sewer cut-off and repair entrance requirements (PDF)

Requirements for specific project types

Additional Permit Information

Additional resources

Fees

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.

Grease interceptors

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

GI sizing worksheet (Requires Microsoft Excel Version 2003 or later)

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.

Standards and details

The following technical documents are sample design standards:

Grease interceptor (PDF or DWG)
- Grease interceptor sizing worksheet (Requires Microsoft Excel Version 2003 or later)
Sand oil separator (PDF or DWG)
2 Compartment Sand Oil Interceptor (PDF or DWG)
Groundwater to Storm (PDF or DWG)
Residential Drainage (PDF or DWG)
Sideyard Drainage (PDF or DWG)
Sanitary Cleanout Detail Figure 2.11.1 (PDF)

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