Septic System Use Permits

A Use Permit is required for:

• A sale or change of ownership of a property (with certain exceptions)
• A change in use of the property (i.e., a residence to a business)
• Any addition of bedrooms
• An addition of a separate "modular" home
• Other reasons deemed necessary by the department

To obtain a permit, the following is required:

• Application for an OWTS Use Permit
• Use Permit Inspection Form
• Use Permit Deficiency Repair Verification Form (if applicable)
• Agreement to Forego Expansion (if applicable)
• Agreement to Repair a Septic (if applicable)

Use Permit inspections must be completed by an individual that is certified as an inspector by the National Association of Wastewater Technicians (NAWT).  Click here to check if someone has completed this certification. 

Permit applications may be emailed to [email protected]. Permit applications may also be mailed or submitted in-person during business hours to the Environmental Health office. The normal business hours for the Environmental Health office are Monday thru Friday, 8:00 AM to 12:00 PM and 1:00 PM to 5:00 PM, excluding holidays. The Environmental Health office is located at:

7190 Colorado Blvd.

Ste. 200

Commerce City, CO 80022

Additional Documents:

• Fee Schedule - Current pricing for OWTS permits
• Guide to Use Permit Inspection Form
• Use Permit FAQs - English
• Use Permit FAQs - Spanish