Fence Requirements: Boulder vs Longmont
How do fence requirements rules compare between Boulder, CO and Longmont, CO?
Boulder, CO
Boulder County
No data available yet for Boulder.
Longmont, CO
Boulder County
Longmont's fence rules in LMC 15.05.100 set construction standards: posts at least 4x4, embedded at least 24 inches deep and spaced no more than 8 feet apart; wood in contact with concrete or soil must be pressure-treated or naturally decay-resistant; finished side must face outward; fences may not block utility meters, fire hydrants, or easements; and the property owner must call 811 before digging.
View full Longmont rules →Key Facts Comparison
| Fact | Boulder | Longmont |
|---|---|---|
| Minimum Post Size | - | 4x4 nominal or larger |
| Post Depth | - | At least 24 inches embedded |
| Max Post Spacing | - | 8 feet |
| Wood Treatment | - | Pressure-treated or naturally decay-resistant when contacting concrete/soil |
| Finished Side | - | Must face ROW, common open space, or public area |
| Utility Clearance | - | May not enclose front-quarter electric meter; may not block hydrants or easements |
| Before Digging | - | Call 811 - allow 3-5 business days for locates |
Highlighted rows indicate differences between cities.
Boulder FAQ
No FAQs available.
Longmont FAQ
How deep do fence posts have to be in Longmont?
At least 24 inches embedded in the ground or concrete, with posts no more than 8 feet apart and at least 4x4 nominal in size.
Can I fence in my electric meter?
No - electric meters located on the front quarter of the house may not be fenced in, and you may not block utility-access easements, hydrants, or meter approaches.
Do I have to call 811 before installing a fence?
Yes. The Fence Building Guide directs owners to always call 811 (Utility Information Center) to mark underground lines, and to allow 3-5 working days for locates before digging post holes.
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