Material Restrictions: Boulder vs Longmont
How do material restrictions rules compare between Boulder, CO and Longmont, CO?
Boulder has fewer restrictions than Longmont.
Boulder, CO
Boulder County
Boulder regulates fence materials by zone. Wood, vinyl, wrought iron, and chain-link common. HOAs frequently impose stricter material requirements.
View full Boulder rules →Longmont, CO
Boulder County
Under LMC 15.05.100, fences made of barbed wire, tin, or sheet metal - or partly of those materials - are prohibited. Electric fences are also prohibited, except for low-voltage commercially available 'invisible fences' used to contain domestic pets. Chain-link and woven-wire fencing is banned in the front yard of residential lots (except temporary construction fencing).
View full Longmont rules →Key Facts Comparison
| Fact | Boulder | Longmont |
|---|---|---|
| Approved | Wood, vinyl, wrought iron | - |
| Chain-Link | May be restricted front | - |
| Barbed Wire | Residential prohibited | Prohibited (LMC 15.05.100) |
| HOA | Often stricter | - |
| Tin / Sheet Metal | - | Prohibited - in whole or in part |
| Electric Fences | - | Prohibited, except low-voltage invisible pet fences |
| Razor / Concertina Wire | - | Prohibited (as form of barbed wire) |
| Chain Link / Woven Wire | - | Prohibited in residential front yards (except temporary construction) |
Highlighted rows indicate differences between cities.
Boulder FAQ
Can I use chain-link?
Usually allowed in rear/side yards. Front yards may restrict it. Check Boulder code and your HOA.
Which side faces out?
The finished ‘good side’ typically faces outward toward your neighbors.
Longmont FAQ
Can I use barbed wire on my fence in Longmont?
No. LMC 15.05.100 prohibits fences made wholly or partly of barbed wire, tin, or sheet metal. Razor wire is similarly prohibited.
Is an invisible dog fence legal in Longmont?
Yes. Low-voltage, commercially available 'invisible fences' used to contain domestic pets are explicitly exempted from the electric-fence ban.
Can I use chain link in my front yard?
No, not in residential zones. Chain-link and woven-wire fences are prohibited in residential front yards, except for temporary chain link during construction or replacement of an existing legal non-conforming fence.
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