Colorado Pool Fence Requirements at a Glance
State and local laws change. This information reflects our best research as of September 2026, but you must confirm current requirements with your local building department before installing or modifying any pool barrier. Colorado has no statewide rule for home pools; your city or county's adopted code is the one that applies.
Last reviewed: September 2026. Report an error →
Colorado Pool Barrier Law
Colorado has no statewide building code (Colorado Office of the State Architect). The state adopts codes only for a few building types, such as schools and health facilities, and leaves homes to cities and counties. No state statute sets a barrier rule for private residential pools, so your city or county's adopted code decides whether a pool needs a fence and how tall it must be.
Where a local code includes the International Swimming Pool and Spa Code (ISPSC), Section 305 sets these barrier rules (ICC model text, 2024 edition):
- A top at least 48 inches above grade, measured on the side away from the pool
- No more than 2 inches between grade and the bottom of the barrier
- No opening a 4-inch sphere can pass through
- Pedestrian gates that open outward, away from the pool, close and latch by themselves, and can take a lock
- A latch release less than 54 inches above the bottom of the gate placed on the pool side, at least 3 inches below the top, with no opening over 1/2 inch within 18 inches of it
- Where a wall of the house is part of the barrier, an alarm on doors that open to the pool, or another option the code lists
- A mesh fence set at least 20 inches back from the water's edge
- Pool equipment outside the barrier kept at least 36 inches away from it, so it cannot be used to climb over
Pools with a powered safety cover, and spas or hot tubs with a lockable safety cover, meeting ASTM F1346 do not need the barrier.
Colorado's one statewide pool barrier rule covers public and semi-public pools: fencing at least 60 inches high with self-closing, self-latching gates (5 CCR 1003-5). It does not apply to a pool at a private home.
Above-Ground Pools in Colorado
Where the ISPSC applies, an above-ground pool's own wall can serve as the barrier if it sits on grade and is at least 48 inches high around the whole pool, with ladders or steps that can be secured, locked or removed, or that are enclosed by their own barrier. Whether your city applies these rules to an above-ground pool, and at what depth, is set by its adopted code.
City & County Variations in Colorado
Colorado's cities and counties adopt their own codes. We list only what we could confirm from a city's own code; anywhere else, ask your building department.
| City / County | Key Notes |
|---|---|
| Denver | Homes: at least 48 inches under the Residential Code, Section R328.1, which applies ISPSC Section 305 (p. 147). Pools under the Commercial Building Code, such as at apartment buildings and hotels: at least 60 inches (Section 3109, p. 98). Both are in the 2025 Denver Building Code; our Denver guide has the details. Permit: Denver Community Planning and Development. |
| Other cities and counties | Each adopts its own code edition and amendments. Ask your building department which pool code it enforces and whether the barrier needs its own permit. |
Official source: Colorado Office of the State Architect, Building Codes
Pool Fence Cost in Colorado
We found no published source that prices pool fences by state or city, so these are national installed ranges from our pool fence cost guide. Quotes where you live can land above or below them.
| Material | Installed, per linear foot | Full breakdown |
|---|---|---|
| Removable mesh | $15 to $35 | Mesh fence cost |
| Aluminum | $30 to $60 | Aluminum fence cost |
| Vinyl / PVC | $20 to $45 | Vinyl fence cost |
| Tempered glass | $90 to $500 | Glass fence cost |
National typical installed ranges, not quotes. Multiply by your fence perimeter. Some sources include one gate in the figure; extra gates, permits and hard deck surfaces add to the total. Sources: HomeGuide (Feb 3, 2026), Life Saver Pool Fence (Aug 5 and Sep 23, 2026) and Pool Guard USA (May 20, 2025). Full source list and method: pool fence cost guide. Reviewed September 2026.
Colorado-Specific FAQs
Colorado Pool Fencing: Local Codes
Colorado leaves residential pool barriers to cities and counties, so the first question is which code yours has adopted. In Denver the answer depends on the building: 48 inches at a house under the Residential Code, 60 inches for a pool the Commercial Building Code covers.
The state's 60-inch rule applies to public and semi-public pools. Homeowners who read the state regulation often assume it governs their backyard. It does not.
Ask your building department when the barrier is inspected and what depth it expects for fence and gate posts.
Sources
Every rule on this page traces to one of these. We link the primary source so you can check it yourself.
- Colorado Office of the State Architect, Building Codes (no statewide building code; codes adopted and enforced locally)
- 5 CCR 1003-5, Swimming Pools and Mineral Baths (Colorado Secretary of State) (60-inch fencing for public and semi-public pools)
- International Code Council (ICC), ISPSC 2024 Section 305 (model text) (barrier height, openings, gates, latch, mesh setback, clear zone, house wall)
- 2025 Denver Building Code (City and County of Denver) (Denver's pool rules: Residential Code R328.1, p. 147, 48 inches; Commercial Building Code 3109, p. 98, 60 inches)
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