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Littleton, CO Swimming Pools & Spas: Pool Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Swimming pool permit rules in Littleton, CO, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.

Key Facts

Enforcing agency
Littleton Building Division code official
Permit expires
180 days if work not started
Extension
written request, justifiable cause required
Barrier exception
ASTM F1346 lockable or powered safety cover
Adopted code
2024 Int'l Swimming Pool and Spa Code
Max penalty
$2,650 fine, 364 days jail for adult

Summary

Building a residential pool or spa in Littleton requires a permit under the city's amended 2024 International Swimming Pool and Spa Code, enforced by the Building Division. The permit lapses if work doesn't start within 180 days, and pools or spas with a lockable or powered ASTM F1346 safety cover can skip the code's standard perimeter barrier requirements.

These provisions shall be known as the Swimming Pool and Spa Code of City of Littleton, Colorado, and shall be cited as such and will be referred to herein as "this code." ... The City of Littleton Building Division is hereby deemed the agency in charge of enforcement of this code and the official in charge thereof shall be known as the code official. ... 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. The building official is authorized to grant, in writing, one or more extensions of time, for periods not more than 180 days each. The extension shall be requested in writing and justifiable cause demonstrated.

Full Breakdown

1). 3 gives the applicant 180 days to start the authorized work, or the permit becomes invalid; if work already began, it can be suspended for up to 180 days before lapsing. The building official may grant one or more written extensions of up to 180 days each, but only on a written request showing justifiable cause. 7. 2 from the adopted code.

Violations & Fines

Installing or altering a pool or spa without the required permit, or in violation of approved plans or a code official's directive, is punished under Section 113.4 of the adopted Swimming Pool and Spa Code, which routes every violation to the General Penalty, City Code Section 1-4-1: a fine of up to $2,650 and up to 364 days in jail for an adult violator, or up to $2,650 with no jail for a minor, with each day of noncompliance a separate offense.

Frequently Asked Questions

Do I need a permit to build a pool in Littleton?
Yes. Littleton adopted the 2024 International Swimming Pool and Spa Code by reference, and its Building Division issues and enforces pool and spa permits under that code. Work has to begin within 180 days of the permit's issuance or it becomes invalid, though the building official can grant a written extension of up to 180 days if you show justifiable cause.
Can I skip the pool fence requirement in Littleton if I use a pool cover?
Possibly. Section 305.1 excuses residential pools with a powered safety cover meeting ASTM F1346, and residential spas or hot tubs with a lockable safety cover meeting the same standard, from the code's standard perimeter barrier rules in Sections 305.2 through 305.7. Without a qualifying cover, the barrier requirements still apply.
What happens if I build a pool without a Littleton permit?
You're subject to Section 113.4 of the adopted Swimming Pool and Spa Code, which is enforced under the city's General Penalty, Section 1-4-1: up to $2,650 in fines and up to 364 days in jail for an adult, with every day the violation continues counted as its own separate offense.

Sources & Official References

Other rules in Littleton

All Littleton rules

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