Updated : 09/27/2024

Overview

Westmont, Illinois, adopted the 2021 International Residential Code (IRC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments). Westmont, Illinois, adopted the 2021 International Building Code (IBC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments). Westmont, Illinois, adopted the 2021 International Existing Building Code (IEBC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments). 

Helpful resources for Westmont, Illinois include the following.

• Jurisdiction's Information Page(s):
  • Westmont, IL Website
  • Westmont, IL Code of Ordinances
  • Westmont, IL Buildings and Building Regulations
• PLRB, Ordinance and Law Coverage Discussion for Illinois

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.

Westmont adopted the 2021 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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2021 IRC(Westmont, IL Sec. 18-61. - Adoption of code.)

...Building Code, without appendices, prepared and published by the International Code Council, Inc. • 2021 International Residential Code, without appendices, prepared and published by the International Code Council, Inc. • 2021 International...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Westmont ? Yes
Citation: Westmont, IL, Muni. Code § 18.62 (amendments).
Municipal Code https://library.municode.com/il/westmont/codes/code_of_ordinances?nodeId=COOR_CH18BUBURE_ARTIIIBUCO_S18-62DEADDEINCH
Comments:

Table R301.2 (1) Climatic and Geographic Design Criteria. Insert the following information in the table:

Ground Snow Load = 25

Wind Design

Speed (MPH) = 115(51)

Topographic effects = No

Seismic Design Category = A

Subject to Damage From

Weathering = Severe

Frost Line Depth = 42″

Termite = Mod to Heavy

Winter Design Temp = 10 degrees F

Ice Barrier Underlayment Required = Yes

Flood Hazards – 8/1/2019

Air Freezing Index = 1700

Mean Annual Temp = 50.6 degrees F

Government Officials

Comments

Westmont, Illinois, adopted the 2021 International Residential Code (IRC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments).

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.

No adoption of appendix J of the IRC was located. 

Westmont, Illinois, adopted the 2021 International Existing Building Code (IEBC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments). 

Commercial Building Code

Westmont adopted the 2021 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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2021 IBC(Westmont, IL Sec. 18-61. - Adoption of code.)

...There is hereby adopted by reference as is fully set out herein certain codes as follows: • 2021 International Building Code, without appendices, prepared and published by the International Code Council, Inc. • 2021 International Residential Code, without appendices...

Comments

Westmont, Illinois, adopted the 2021 International Building Code (IBC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments).

Existing Buildings

Westmont, Illinois, adopted the 2021 International Existing Building Code (IEBC), with amendments. Westmont, IL, Muni. Code § 18-61 (adoptions) and § 18-62 (amendments). 

Other Building Codes