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IECC = International Energy Conservation Code, a model energy code that sets out minimum efficiency standards for new construction for a structure’s walls, floors, ceilings, lighting, windows, doors, duct leakage and air leakage.
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JurisdictionI-CodesIECCEV-ReadyElectric-Ready/Electric RequirementSolar-Ready
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Adams County20182018*adoption of 2021 IECC in progress
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Aguilar2012 IBCNone
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Akron2009None
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Alamosa20182018
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Alamosa County20182018
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Alma20122012
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Antonito20182018
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Arapahoe County20212021
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Archuleta County20152015
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Arriba20182018
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Arvada20182018*adoption of 2021 IECC in progress
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Aspen20212021XElectric-readyX
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Ault20182018
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Aurora20212021
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Avon20212021XElectric-preferredX
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Baca CountyNoneNone
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Bailey20182018
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Basalt20212021XElectric-readyX
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Bayfield20182018
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Bennett20182018
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Bent County
2018 IBC/2006 IRC
None
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Berthoud20212021X
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BethuneNoneNone
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Blackhawk20212021
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BlancaNoneNone
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Blue River20182018
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BonanzaUBC-1997None
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Boone20212021
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Boulder County20152015XX*adoption of 2021 IECC in progress
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Boulder, City of20182018XX*adoption of 2021 IECC in progress
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Bow Mar20152006
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Branson20182018
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Breckenridge20182018XXZERH requirement for residential
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Brighton20212021
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Brookside20182006
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Broomfield, City and County of20212021XElectric-readyX
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Brush20182018
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Buena Vista20212021XElectric-readyX
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BurlingtonNoneNone
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Calhan20182018
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CampoNoneNone
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Canon City20182018
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Carbondale20092015*adoption of 2021 IECC in progress
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Castle Pines20212018
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Castle Rock20182018*adoption of 2021 IECC in progress
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Cedaredge20182018
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Centennial20212021
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Center20182018
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Central City20182018
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Chaffee County20212021XElectric-readyX
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Cheraw20062018
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Cherry Hills Village20212021
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Cheyenne CountyNoneNone
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Cheyenne WellsNoneNone
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Clear Creek County20152009
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Coal Creek2006None
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Cokedale20092009
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Collbran20182018
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Colorado Dept of Local Affairs, Division of Housing
20182015
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Colorado Springs (PPRBD)20212021
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Columbine20182015
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Commerce City20212021
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Como20182018
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Conejos County20182018
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Cortez20152009
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Costilla County20182018
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Craig20182018
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CrawfordNoneNone
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Creede2003None
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Crested Butte20212021XAll ElectricXZERH requirement for residential
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CrestoneNoneNone
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Cripple Creek20182018
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Crook20062006
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Crowley County20182018
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Crowley, Town of2018None
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Custer CountyNoneNone
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Dacono20182021
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De Beque20182018
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Deer Trail20212021
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Del Norte20182018
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Delta20182012
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Delta CountyNoneNone
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Denver, City & County of20212021XElectric-preferredXPartial electrification for space and water heating in commercial
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Dillon20182018XXSolar ready for single family only
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Dinosaur20182018
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Dolores20212021
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Dolores CountyNoneNone
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Douglas County20212018
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Dove Creek20182018
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Durango20182018X
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Eads20182018
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Eagle County20152015*adoption of 2021 IECC in progress
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Eagle, Town of20212021XElectric-preferredX
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Eaton20182012*enforcing 2018 IECC for residential
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EckleyNoneNone
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Edgewater20212021XElectric-readyX
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Edwards20152015
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El Jebel20152015