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Westchester, Illinois Building Codes

Updated : 04/22/2024

Overview

Westchester, IL has adopted the 2012 International Codes, with amendments, including the 2012 IRC and IBC. Westchester, IL Muni. Codes § 14.03.010 (IRC adoption), §  14.03.020 (IRC amendments), § 14.04.010 (IBC adoption) and § 14.04.020 (IBC amendments).

Helpful resources for Westchester, 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.

Westchester 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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2012 IRC(Westchester, IL 14.03.010 - Adoption.)

...the office of the village clerk of the Village of Westchester, being marked and designated as the International Residential Building Code 2012 edition, as published by the International Code Council, Inc., be and is adopted as the residential code of the Village of Westchester, in the State of Illinois; for the control of building and structures...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Westchester ? Yes
Citation: § 14.03.020
Municipal Code https://library.municode.com/il/westchester/codes/code_of_ordinances?nodeId=TIT14BUCO_CH14.03INRECO2012_14.03.020MONSADDEMO
Comments:

Table R301.2(1) Complete the Table as follows:

Ground 
Snow 
Load 
WIND 
DESIGN 
Seismic 
Design 
Category 
SUBJECT TO 
DAMAGE FROM 
Winter 
Design 
Temp 
Ice 
Barrier 
Underlayment 
Required 
Flood 
Hazards 
Air 
Freezing 
Index 
Mean 
Annual 
Temp 
Speed Topographic Effects Weathering Frost Line Depth Termite
                       
25 90 No B Severe 48" Moderate -4 Yes Yes 1700 50
Government Officials
Last Name First Name Title E-mail Phone Note
Headley Melissa Community Development Director mheadley@westchester-il.org 708/345-0199

Comments

Westchester, IL has adopted the 2012 IRC including appendices  A, B, C, F, G, H, J and K.

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.

Westchester, IL has adopted the 2012 IRC including appendix J. Westchester, IL Muni. Code § 14.03.020.

Commercial Building Code

Westchester 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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2012 IBC(Westchester, IL 14.52.020 - Village inspection of real estate—Certificate of compliance required.)

...2012, as adopted as the Property Maintenance Code ("PMC") of the Village of Westchester in Chapter 14.16 of the Westchester Municipal Code; the International Building Code of 2012, as adopted as the Building Code ("BC") of the Village of Westchester in Chapter 14.04 of the Westchester Municipal Code; the Illinois Accessibility Code of 1997, as adopted in...

Comments

Westchester, IL has adopted the 2012 IBC including appendices F, G, H105 and H106, I, and J.

Existing Buildings

Westchester, IL did not adopt the IEBC, therefore Chapter 34 of the IBC would apply.

Section 3401.1 Existing buildings or structures: Delete this section in its entirety and amend to read:

Section 3401.1 Existing buildings and structures: An addition to a structure shall conform to the requirements for a new structure without requiring the existing structure to comply with the requirement for new construction, except the entire structure shall be made to conform with the requirements of the this code in respect to means of egress, fire protection, light, and ventilation.

Other Building Codes

Westchester, IL also adopted the following codes:

2012 International Mechanical Code. Westchester, IL Muni. Code § 14.06.010.

2012 Life Safety Code (NFPA 101). Westchester, IL Muni. Code § 14.07.010.

2014 Illinois State Plumbing Code. Westchester, IL Muni. Code § 14.09.010.

2012 International Property Maintenance Code. Westchester, IL Muni. Code § 14.16.010.

2012 International Swimming Pool and Spa Code. Westchester, IL Muni. Code § 14.24.010.

2011 National Electric Code (NFPA 70). Westchester, IL Muni. Code § 14.28.010.

2012 International Fire Code. Westchester, IL Muni. Code § 14.36.010.

2012 International Fuel Gas Code. Westchester, IL Muni. Code § 14.65.010.

1997 Illinois Accessibility Code. Westchester, IL Muni. Code § 14.70.010.

2012 International Energy Conservation Code. Westchester, IL Muni. Code § 14.75.010.