Panel Permits: Boulder vs Longmont
How do panel permits rules compare between Boulder, CO and Longmont, CO?
Longmont has fewer restrictions than Boulder.
Boulder, CO
Boulder County
Boulder requires building permits for solar panel installations. Permit processes vary but most jurisdictions have streamlined solar permitting. Roof-mounted systems must meet structural and electrical code requirements.
View full Boulder rules →Longmont, CO
Boulder County
Longmont permits residential and commercial solar PV through Building Services with fees capped under Colorado HB 11-1199 (the Fair Permit Act) — $500 for a residential system and $1,000 for a non-residential system. Complete applications that meet the city's 'Solar ABC's Expedited Permit Process' are turned around in 5 business days. Applications run through the CitizenAccess online portal, and Longmont Power & Communications handles the separate interconnection on the utility side.
View full Longmont rules →Key Facts Comparison
| Fact | Boulder | Longmont |
|---|---|---|
| Permit | Required, often expedited | - |
| Fire Setback | 3 feet from roof edges | - |
| Net Metering | Available in most states | - |
| Topic | Panel Permits | - |
| Permit Fee Cap | - | $500 residential / $1,000 commercial (HB 11-1199) |
| Cap Authority | - | Colorado Fair Permit Act, extended by HB 21-1284 to Dec 31, 2029 |
| Expedited Review | - | 5 business days (Solar ABC's) |
| Application Portal | - | Longmont CitizenAccess online |
| Building Code | - | Per LMC Title 16 / current adopted IBC + IRC |
| Interconnection | - | Longmont Power & Communications (municipal utility) |
| Contact | - | Building Inspection — (303) 651-8332 |
Highlighted rows indicate differences between cities.
Boulder FAQ
Do I need a permit for solar panels?
Yes, a building and electrical permit is required. Many jurisdictions offer expedited or over-the-counter permits for standard residential rooftop solar systems.
Can my neighbor build something that shades my solar panels?
Many states have solar access laws that protect existing solar installations. Check state law and Boulder zoning code for solar easement protections.
Longmont FAQ
How much does a solar permit cost in Longmont?
Colorado HB 11-1199 (the Fair Permit Act) caps Longmont's solar PV permit and related fees at $500 for a residential system and $1,000 for a non-residential system, and limits any charge to the city's actual cost of issuing the permit. HB 21-1284 extended the cap to December 31, 2029. Net metering and interconnection are handled separately by Longmont Power & Communications.
How long does Longmont take to approve a solar permit?
Complete applications that fit the 'Solar ABC's Expedited Permit Process' are reviewed and approved within 5 business days. Applications that include an electrical service upgrade, missing documents, or non-standard configurations drop to the standard residential review timeline. Apply through the CitizenAccess online portal.
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