Boulder County Plumbing & Fuel Gas Code Amendments

County (unincorporated areas) · Boulder County · Colorado

Plumbing code: 2021 IPC
Fuel gas code: 2021 IFGC
Effective: Jul 1, 2026
Adopted by: Board of County Commissioners Resolutions 2025-012 and 2026-020
Local amendments: 42

Boulder County doesn't use the model plumbing and gas codes exactly as printed. It adopted the 2021 IPC and 2021 IFGC and then made 42 local changes. Some are paperwork, like permits and fees. Others change what you build in the field, including venting, water heaters, graywater. If you bid off the model book alone, you can miss them. CodeCheck Colorado lists every one in plain English with the official source.

What are Boulder County's local venting rules?

1 local change on this topic

Boulder County sets its own rule for venting. Sign in to see the rule and ordinance.

What does Boulder County require for water heaters?

4 local changes on this topic

Boulder County sets its own rule for water heaters. Sign in to see the rule and ordinance.

Water heater permit rules in Colorado →

What is Boulder County's rule on graywater systems?

5 local changes on this topic

Boulder County sets its own rule for graywater. Sign in to see the rule and ordinance.

What permit and fee rules does Boulder County add?

31 local changes on this topic

Boulder County sets its own rule for permits and administration. Sign in to see the rule and ordinance.