Updated : 06/11/2024

Overview

LaSalle County, Illinois, adopted the 2003 International Residential Code (IRC), excluding appendices E, F, G, H, I, J, K, with amendments. LaSalle County, IL, Muni. Code § 5-1 (adoption) and § 5-2 (amendments). LaSalle County, Illinois, adopted the 2003 International Building Code (IBC), with amendments. LaSalle County, IL, Muni. Code § 5-1 (adoption) and § 5-2 (amendments).

Helpful resources for LaSalle County, Illinois include the following.

• Jurisdiction's Information Page(s):
  • LaSalle County, IL Website
  • LaSalle County, IL Building Permit Ordinance
• 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.

LaSalle County adopted the 2003 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 Amlegal(LaSalle, IL § 150.04 INTERNATIONAL BUILDING CODE.)

...Delete the text of the exception of Section 101.2 and substitute the following: “Detached one- and two-family dwellings and their accessory structures shall comply with the International Residential Code.” (3) Section 101.4.1 Electrical. Delete the text of Section 101.4.1 and substitute the following: “The provisions of the National Electric Code, as amended by City ordinances shall apply to the installation, alterations, repairs and replacement of electrical systems, including equipment, appliances, fixtures, fittings and appurtenances....

Drip Edge

Drip Edge: no

Ice Barrier

Are ice barriers required for LaSalle County ? Yes
Citation: LaSalle County, IL, Muni. Code § 5-2 (amendments)
Municipal Code https://www.lasallecountyil.gov/DocumentCenter/View/631/Building-Permit-Ordinance-PDF#page=6
Comments:

Table 301.2(1). Climatic and Geographic Design Criteria. Insert under each category:

-Ground Snow Load (PSF-pounds per square foot) 25

-Wind Speed (MPH) 90

-Seismic Design Category B

-Weathering Severe

-Frost Line Depth 42 inches

-Termite Moderate to heavy

-Decay Slight to moderate

-Winter Design Temperature 5 degrees

-Ice Shield Under-Layment Request yes

-Flood Hazards a) 10-11-88  b) 9-7-01

-Air Freezing Index 1500

-Mean Annual Temperature 52 degrees

Government Officials

Comments

LaSalle County, Illinois, adopted the 2003 International Residential Code (IRC), excluding appendices E, F, G, H, I, J, K, with amendments. LaSalle County, IL, Muni. Code § 5-1 (adoption) and § 5-2 (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.

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

Commercial Building Code

LaSalle County adopted the 2003 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(LaSalle, IL Municipal Code)

...Adoption not found...

Comments

LaSalle County, Illinois, adopted the 2003 International Building Code (IBC), with amendments. LaSalle County, IL, Muni. Code § 5-1 (adoption) and § 5-2 (amendments).

Existing Buildings

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

Other Building Codes