Littleton, CO Building Safety: Plumbing Permits (2026)
Key Facts
- Adopted code
- 2024 International Plumbing Code
- Permit expires
- 180 days if work not started
- Minimum sewer depth
- 36 inches below grade
- Minimum roof vent extension
- 12 inches above roof
- Enforcing agency
- Building Division / code official
Summary
Littleton adopts the 2024 International Plumbing Code, locally amended, for all plumbing work in the city, enforced by the Building Division. A plumbing permit becomes invalid if work does not start within 180 days, and the local amendments set specifics like a 36-inch minimum sewer depth and a 12-inch minimum roof vent extension.
G. Amendments to the 2024 International Plumbing Code: The 2024 International Plumbing Code is hereby adopted by reference and amended as follows: ... [A] 105.5.3 Expiration. ... Every permit issued shall become invalid unless the work on the site authorized by such permit is commenced within 180 days after its issuance, or if the work authorized on the site by such permit is suspended or abandoned for a period of 180 days after the time that the work has commenced. ... 305.4.1 Sewer depth. ... Building sewer that connect to private sewage disposal systems shall be installed not less than thirty-six (36) inches (914 mm) below finished grade at the point of septic tank connection. Building sewers shall be installed not less than thirty-six (36) inches (914 mm) below grade.
Full Breakdown
Littleton City Code § 4-1-1(F) adopts the 2024 International Plumbing Code for regulation of plumbing within the city. 1 names the Building Division as the enforcement agency, with the official in charge called the code official. 3 Expiration so that a permit becomes invalid unless work starts within 180 days of issuance, or if work is suspended or abandoned for 180 days after starting; the building official can grant one or more extensions of up to 180 days each, in writing, on a justified written request.
1 requires an open vent pipe through a roof to terminate at least 12 inches above the roof. 4 allows water dispensers to substitute for up to half of required drinking fountains where three or more are required, and lets restaurants skip drinking fountains if they provide free drinking water. Violations of the plumbing code carry the same enforcement path as the rest of Title 4.
Violations & Fines
Section 114.4, as amended locally, makes it a violation to fail to comply with the plumbing code, install or repair work against approved plans, or ignore a code official's directive or a permit's terms. Under Littleton City Code Title 1, Chapter 4, § 1-4-1, the general penalty applies: a fine of up to $2,650, imprisonment of up to 364 days, or both, with each day a violation continues counted as a separate offense.
Frequently Asked Questions
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Sources & Official References
Other rules in Littleton
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How other cities in Arapahoe County handle plumbing permits.