Town of Castle Rock
Castle Rock tankless permit papers
The Town adds a plan review when the water heater is tankless. You submit the manufacturer's specification sheet and gas piping load calculations. A storage tank may avoid that review. The codes the Town adopted took effect June 30, 2026.
Read the full contrast on Castle Rock tankless installation and the town hub Castle Rock. Do not use Aurora's same-day sentence. The building phone published on the residential permit page is 720-733-3527. It is the Town's number, not a link here, and it is not this guide's referral line.
Water-line ownership for Town water customers is a separate FAQ: the Town maintains service to the property-line connection. That is not the tankless packet, and it is not Aurora's sewer tap.
Questions to settle first
What do I hand the Town for a tankless heater?
The manufacturer's specification sheet and gas piping load calculations, with the plan review the residential permit page describes. A tank heater is listed among types that may not need that review. Confirm the current application. Do not submit an Aurora checklist instead.
Did the code change?
The Town says adopted building-code amendments took effect June 30, 2026. Do not rely on an older metro list. Ask the counter if a submittal prepared earlier still matches. Ask them to write that limit into the quote before you compare it with another company.
Is the gas-load sheet the same as a water-line repair?
No. The sheet is about the heater's fuel demand. The Town's water FAQ is about who owns the service to the curb. A tankless install can involve both only if the quote says the water piping changes too. Ask them to write that limit into the quote before you compare it with another company.
