Fencing Requirements: Boulder vs Longmont
How do fencing requirements rules compare between Boulder, CO and Longmont, CO?
Boulder and Longmont have similar restriction levels.
Boulder, CO
Boulder County
Boulder requires pool barriers to prevent unsupervised child access. Minimum 48-inch height. Self-closing, self-latching gates required.
View full Boulder rules →Longmont, CO
Boulder County
Longmont requires every pool deeper than 24 inches and every hot tub or spa to be enclosed by a barrier at least 4 feet (48 inches) tall, with no opening larger than 4 inches, per LMC 15.05.100 and the adopted 2021 IRC Appendix V. Gates must self-close and self-latch, opening outward away from the pool, with the latch release at least 54 inches high.
View full Longmont rules →Key Facts Comparison
| Fact | Boulder | Longmont |
|---|---|---|
| Height | 48 inches (4 ft) minimum | - |
| Gates | Self-closing, self-latching | - |
| Latch | 54" high or pool side | - |
| HOA | May require higher | - |
| Minimum Barrier Height | - | 4 feet / 48 inches (LMC + 2021 IRC App. V) |
| Max Opening | - | Less than 4-inch sphere |
| Bottom Clearance | - | Max 2 inches above grade (4 in over solid surface) |
| Gate | - | Self-closing, self-latching, opens outward away from pool |
| Latch Height | - | At least 54 inches above bottom of gate |
| Door Alarm | - | Required where dwelling door opens directly to pool area |
| Code Citation | - | LMC 15.05.100 + 2021 IRC Appendix V |
| Enforcement | - | Building Services - final inspection required |
Highlighted rows indicate differences between cities.
Boulder FAQ
Do I need a pool fence?
Yes. Barriers required around all residential pools and spas.
Can my house wall count?
Yes, if doors have alarms or self-closing mechanisms.
Longmont FAQ
How tall does a pool fence have to be in Longmont?
At least 4 feet (48 inches) measured on the side facing away from the pool, with no opening larger than 4 inches, per LMC 15.05.100 and 2021 IRC Appendix V.
Does the gate have to self-close?
Yes. Under the adopted 2021 IRC, pool gates must be self-closing and self-latching, opening outward away from the pool, with the latch release at least 54 inches above the bottom of the gate.
What if my house wall forms part of the pool barrier?
Doors that open directly from the dwelling into the pool area must be equipped with an audible alarm (or other approved protection such as a self-closing/self-latching device with a release 54 inches high) under 2021 IRC Appendix V.
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