Permit Required
Do you need a permit to install a water heater in Denver, CO?
Replacing or installing a water heater requires a permit. For single-family/duplex homes it is issued as a quick permit without plan review.
✓ Verified from official source
Source: Denver CPD — Water Heaters — Verified 2026-06-26
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.
Find a plumber in Denver, CO →See Installing a Water Heater permit rules for other cities →