Updated : 04/22/2024

Overview

Castle Rock, CO adopts the following codes:

• The International Building Code, 2018 edition. Castle Rock, CO Muni. Code § 15.04.010 (adopted) with amendments at § 15.04.030.
• The International Residential Code, 2018 edition, including Appendices A, B, C, G, H, J and M. Castle Rock, CO Muni. Code § 15.06.010 (adopted) with amendments at § 15.06.030.
• The Uniform Code for the Abatement of Dangerous Buildings, 1997 edition. Castle Rock, CO Muni. Code § 15.22.010 (adopted) with amendments at § 15.22.030.
• The International Existing Building Code, 2018 edition. Castle Rock, CO Muni. Code § 15.24.010 (adopted) with amendments at § 15.24.030.

Helpful resources for Castle Rock, Colorado include the following.

• PLRB, Ordinance and Law Coverage Discussion for Colorado

Residential Building Code

Colorado has yet to adopt a statewide residential code. Local laws will control.See PLRB, Colorado Building Codes for more information on state level codes.

Castle Rock adopted the 2018 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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See Muni. Code(Castle Rock, CO Chapter 15.06 - International Residential Code)

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Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Castle Rock ? Yes
Citation: Castle Rock, CO Muni. Code § 15.06.030 (amendments).
Municipal Code www.municode.com/library/co/castle_rock/codes/municipal_code?nodeId=TIT15BUCOPUIM_ARTIIBUCO_CH15.06INRECO_15.06.030AM
Comments:

Castle Rock, CO Design Criteria.

Ground Snow Loado*	Wind Speed (mph)				Seismic Design Categoryf	Subject to Damage From			Winter Design Tempe	Ice Barrier Under- layment Requiredh	Flood Hazardsg	Air Freezing Indexi	Mean Annual Tempj
	Speedd(mph)	Topographic effectsk	Special wind regioni	Windborne debris zone m		Weather- inga	Frost Line Depthb	Termitec
6000—6499 35 psf 6500—6999 40 psf	115 mph Vult (Exposure is site specific)	No	No	No	B	Severe	36"	Slight to moderate	1°F	Yes	a.05/26/1988 b.03/16/2016 c.**	867	48.1°F

 

Elevation	Latitude	Winter heating	Summer cooling	Altitude correction factor	Indoor design temperature	Design temperature cooling	Heating temperature difference

6000-7000 feet	39°N	-3°	90°	.80	70°	75°	69°
Cooling temperature difference	Wind velocity heating	Wind velocity cooling	Coincident wet bulb	Daily range	Winter humidity	Summer humidity	—
15°	15 mph	7.5 mph	60°	High (H)	40%	50%	—

Comments

Castle Rock, CO adopts the International Residential Code, 2018 edition, including Appendices A, B, C, G, H, J and M. Castle Rock, CO Muni. Code § 15.06.010 (adopted) with amendments at § 15.06.030.

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

Refer to Appendix J of the adopted 2018 IRC.

Commercial Building Code

Castle Rock adopted the 2018 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

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2018 IBC(Castle Rock, CO 15.04.010 - Adoption.)

...A. The Town adopts by reference the following code: International Building Code, 2018 Edition (appendices to the International Building Code are only adopted to the extent specified by the user and with Chief Building Official approval), for regulating and governing conditions and maintenance of...

Comments

Castle Rock, CO adopts the International Building Code, 2018 edition. Castle Rock, CO Muni. Code § 15.04.010 (adopted) with amendments at § 15.04.030.

Existing Buildings

Castle Rock, CO adopts the International Existing Building Code, 2018 edition. Castle Rock, CO Muni. Code § 15.24.010 (adopted) with amendments at § 15.24.030.

Other Building Codes