Permit Required
Do you need a permit to replace a sewer line in Denver, CO?
Replacing the building sewer or main drain line requires a plumbing permit.
General requirement — confirm with Denver Community Planning and Development (CPD) / Development Services
No city-specific rule verified yet. This shows the general IRC R105.1 / P3005 requirement. Confirm with Denver Community Planning and Development (CPD) / Development Services.
Permit rules vary by property and change over time. This is an informational guide, not legal advice — always confirm with Denver Community Planning and Development (CPD) / Development Services before starting work.
How to get the permit in Denver
Building department
Apply online
Phone
720-865-2710
Code in force
2025 Denver Building Code (based on 2024 IRC/IBC), adopted June 13, 2025
Need a permit pulled? Find a licensed plumber in Denver
Licensed plumbers near you can handle the permit and the work — compare pros on our directory.
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