Approved Materials: Boulder vs Longmont
How do approved materials rules compare between Boulder, CO and Longmont, CO?
Boulder, CO
Boulder County
No data available yet for Boulder.
Longmont, CO
Boulder County
Longmont allows wood, vinyl, masonry, and ornamental metal fencing under LMC 15.05.100. Any species of wood may be used above ground; wood in contact with concrete or soil must be pressure-treated or naturally rot-resistant (redwood or cedar are explicitly suggested). Chain-link is allowed in side and rear yards of residential lots and throughout non-residential properties, but not in residential front yards.
View full Longmont rules →Key Facts Comparison
| Fact | Boulder | Longmont |
|---|---|---|
| Wood | - | Any species above grade; pressure-treated/rot-resistant when in contact with soil/concrete |
| Suggested Wood | - | Redwood, cedar, pressure-treated lumber |
| Vinyl / Composite | - | Allowed |
| Masonry / Brick / Stone | - | Allowed (subject to height and sight-triangle rules) |
| Ornamental Metal | - | Allowed |
| Chain Link | - | Allowed in side/rear yards; prohibited in residential front yard |
| Prohibited | - | Barbed wire, tin, sheet metal, electric (except invisible pet fence) |
Highlighted rows indicate differences between cities.
Boulder FAQ
No FAQs available.
Longmont FAQ
What materials can I use for a fence in Longmont?
Wood, vinyl, masonry, stone, brick, and ornamental metal are all allowed. Chain-link is allowed in side and rear yards but not in residential front yards. Barbed wire, sheet metal, and electric fences (other than low-voltage invisible pet fences) are prohibited.
Do I have to use pressure-treated wood?
Only for the portion of the wood that contacts concrete or soil - typically posts and the bottom rail. Above-grade pickets and rails can be any species. Redwood and cedar are explicitly suggested as naturally decay-resistant alternatives.
Is vinyl fencing allowed in Longmont?
Yes. Vinyl and composite fencing are permitted, subject to the standard 6-foot height limit for residential property (4 feet/42 inches in the front yard) and sight-triangle restrictions.
Compare other topics
See how Boulder and Longmont compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool