Do I need a permit for water heater replacement in City and County of Denver?
Yes. In Colorado, water heater replacement generally requires a permit, and City and County of Denver is no exception.
Colorado's State Plumbing Board requires a state plumbing permit and inspection for residential water-heater installation and replacement, and there is no exemption from the permit even when the homeowner does the work themselves. Switching between gas and electric, relocating the unit, or moving to a tankless system usually adds electrical, gas, or venting work and additional permits and review. Denver requires a permit to install or replace a residential water heater even for a like-for-like swap; for single-family and duplex homes it is issued as a plumbing or mechanical quick permit through e-permits with no plan review. Denver's energy program encourages heat-pump water heaters, and switching between gas and electric, relocating the unit, or moving to a tankless system usually adds electrical, gas, or venting work and additional trade permits.
Documents you may need
- State plumbing permit applicationrequired
- Equipment specifications (type, capacity, gas vs electric)required
- Location/venting detail for gas units or a fuel-type changeSometimes required
- Plumbing (and mechanical, for gas) quick permit application through Denver e-permitsrequired
- Venting or gas connection detail for a gas unit or a fuel-type changeSometimes required
Possible inspections
- Plumbing inspection of the connection, relief valve, and venting
- Final inspection
- Field inspection of the connection, relief valve, venting, and gas (quick permits are verified by field inspection)
Frequently asked questions
- Do I need a permit for water heater replacement in City and County of Denver?
- Yes. In Colorado, water heater replacement generally requires a permit, and City and County of Denver is no exception. Colorado's State Plumbing Board requires a state plumbing permit and inspection for residential water-heater installation and replacement, and there is no exemption from the permit even when the homeowner does the work themselves. Switching between gas and electric, relocating the unit, or moving to a tankless system usually adds electrical, gas, or venting work and additional permits and review. Denver requires a permit to install or replace a residential water heater even for a like-for-like swap; for single-family and duplex homes it is issued as a plumbing or mechanical quick permit through e-permits with no plan review. Denver's energy program encourages heat-pump water heaters, and switching between gas and electric, relocating the unit, or moving to a tankless system usually adds electrical, gas, or venting work and additional trade permits.
- Who issues the permit in City and County of Denver?
- The local building department for City and County of Denver handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.