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O’Fallon, Illinois Building Codes

Updated : 04/22/2024

Overview

O'Fallon, IL has adopted the 2012 International Codes, with amendments, including the 2012 IRC and IBC. O'Fallon, IL Muni. Codes § 150.01 (adoptions), § 150.06 (IRC amendments) and § 150.02 (IBC amendments). 

Helpful resources for O’Fallon, Illinois include the following.

Residential Building Code

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

O’Fallon adopted the 2012 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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Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for O’Fallon ? Undetermined
Government Officials
Last Name First Name Title E-mail Phone Note
Green Rockie Code Enforcement Officer 618/624-4500 Ext 4

Comments

O'Fallon, IL has adopted the 2012 IRC including appendices G and H. 

 (I)   Section R313.2 Sprinklers in residential Structures is repealed in its entirety and insert:

Section R313.2 One and Two-Family Dwellings Automatic Fire Systems A builder of one and two family dwellings to be constructed for a prospective purchaser shall offer to the purchaser at the time of entering into the construction/purchase contract the option, at the purchasers cost, to install or equip fire sprinklers in the dwelling, residence or unit. No purchaser of such one or two family dwelling shall be denied the right to choose or decline to install a fire sprinkler system in such dwelling or residence being purchased. Written verification by the builder affirming that a fire sprinkler system was offered to the purchaser at the time of entry into the construction/purchase contract must be included in the permit application.

Commercial Building Code

O’Fallon adopted the 2012 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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Comments

O'Fallon, IL has adopted the 2012 IBC including appendices G, H and J. 

Existing Buildings

O'Fallon, IL has adopted the 2012 IEBC. O'Fallon, IL Muni. Code § 150.01.

Other Building Codes

O'Fallon, IL also adopted the following codes:

2012 International Fire Code. O'Fallon, IL Muni. Code § 150.01.

2012 International Mechanical Code. O'Fallon, IL Muni. Code § 150.01.

2012 International Property Maintenance Code. O'Fallon, IL Muni. Code § 150.01.

2012 International Fuel Gas Code. O'Fallon, IL Muni. Code § 150.01.

2012 International Energy Conservation Code. O'Fallon, IL Muni. Code § 150.01.

2011 National Electrical Code. O'Fallon, IL Muni. Code § 150.01.

Illinois State Plumbing Code. O'Fallon, IL Muni. Code § 150.01.