Boulder enforces one of the strictest residential and commercial green building codes in the United States, requiring high insulation, electrification readiness, on-site renewables for larger projects, and HERS-rating compliance under BRC Title 10.
The Boulder Energy Conservation Code, adopted under BRC Title 10, layers above the International Energy Conservation Code with city amendments aligned to the Climate Action Plan. New homes must meet aggressive HERS-index targets; major remodels trigger envelope and equipment upgrades. Larger new construction requires solar PV or solar-ready roofs and EV-ready parking. SmartRegs governs older rental housing efficiency. Commercial buildings face benchmarking and Building Performance standards. The code is recalibrated regularly to track Boulder's net-zero goals, making it a national reference point for municipal climate-aligned building regulation.
Permit denial; certificate-of-occupancy holds until HERS or commissioning reports are accepted; SmartRegs noncompliance bars rental licensing renewals.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Boulder, CO
Boulder imposes no general restriction on year-round lawn ornaments, statuary, or religious displays on private residential property. The Sign Code in BRC 9-...
Boulder, CO
Boulder has no ordinance specifically regulating residential inflatable holiday displays. Size, motor noise, and lighting hours are not capped by the city fo...
Boulder, CO
Boulder explicitly carves out holiday and seasonal displays from its Outdoor Lighting Ordinance. BRC 9-9-16 (Light Output) restricts lamps and bulbs visible ...
Boulder, CO
An outdoor kitchen in Boulder typically requires a building permit when it exceeds 200 sq ft, includes a roof or pergola, or is attached to the house. Gas li...
Boulder, CO
Boulder has no smoker-specific ordinance; offset, pellet, kamado, and wood-fired smokers fall under the general IFC 308 framework adopted in BRC 10-8-2 plus ...
Boulder, CO
Boulder adopts the International Fire Code under Boulder Revised Code Title 10 Chapter 8 (Fire Code). IFC Section 308.1.4 prohibits charcoal burners, gas gri...
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