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Grundy County, Illinois Building Codes

Updated : 05/13/2024

Overview

Grundy County, Illinois, adopted the 2021 International Residential Code (IRC), with amendments. Grundy County, IL, Muni. Code § 6-1-2 (adoption and amendments). Grundy, Illinois, adopted the 2021 International Building Code (IBC), with amendments. Grundy County, IL, Muni. Code § 6-1-2 (adoption and amendments).

Helpful resources for Grundy County, 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.

Grundy County 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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See sterling(Grundy County, IL Municipal Code)

...Adoption not found...

2021 IRC(Grundy County, IL 6-1-2: CODES ADOPTED BY REFERENCE:)

...Residential Code: 2021 International Residential Code with amendments. The following additions, insertions, deletions, and changes are hereby made: Section R101.1 Title: These provisions shall be known as the Residential Code for One- and Two-family Dwellings of Grundy County and shall be cited as such and will be referred to herein as "this code"....

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Grundy County ? Undetermined
Comments:

Table R301.2 (1) Climatic and Geographic Design Criteria.

Ground Snow Load: 25 psf

Wind Design

Speed (mph): 107

Topographic Effects: No

Windborne Debris Zone: No

Seismic Design Category: B

Subject to damage from

Weathering: Severe

Frost Line Depth: 42″

Termite: Moderate to Heavy

Winter Design Temp: 0 Degrees F

Ice Barrier Underlayment Required: Yes

Flood Hazards: 8/2/2012

Air Freezing Index: 2000

Mean Annual Temp: 50.1

Government Officials
Last Name First Name Title E-mail Phone Note
Miller Heidi Director of Land Use Department hmiller@grundycountyil.gov 815/941-3229

Comments

Grundy County, Illinois, adopted the 2021 International Residential Code (IRC), with amendments. Grundy County, IL, Muni. Code § 6-1-2 (adoption and 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.

Grundy County, Illinois, did not adopt the International Existing Building Code (IEBC).

Commercial Building Code

Grundy County 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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See Amlegal(Grundy County, IL Municipal Code)

...Adoption not found...

2018 IBC(Grundy County, IL 6-1-2: CODES ADOPTED BY REFERENCE:)

...e to the public for viewing and inspection at the Land Use Department.A. Building Code: 2018 International Building Code with amendments. The follow...

Comments

Grundy, Illinois, adopted the 2021 International Building Code (IBC), with amendments. Grundy County, IL, Muni. Code § 6-1-2 (adoption and amendments).

Existing Buildings

Grundy County, Illinois, did not adopt the International Existing Building Code (IEBC).

 

Other Building Codes

Grundy County, Illinois, adopted the most current Illinois State Plumbing Code, with amendments. Grundy County, IL, County Code § 6-1-2 (adoption).