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St. Charles, Illinois Building Codes

Updated : 04/22/2024

Overview

St. Charles, IL has adopted the 2015 International Codes, with amendments, including the 2015 IRC (for One and Two Family Dwellings) and IBC. St. Charles, IL Muni. Codes § 15.04.020 (IRC adoption and amendments), § 15.04.010 (IBC adoption) and § 15.04.015 (IBC amendments).

Helpful resources for St. Charles, 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.

St. Charles adopted the 2015 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 St. Charles ? Yes
Citation: § 15.04.010
Municipal Code https://codebook.stcharlesil.gov/1504-%E2%80%93-building-code/1504020
Comments:
  1. Table R301.2 (1) Climatic and Geographic Design Criteria: Revise to read 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 (mph)

Topographic effects

Special wind region

Wind-borne debris zone

Weathering

Frost line depth

Termite

30

115

No

No

No

B

Severe

42-Inches

Mod to Heavy

-5F

Yes

Local Ordinance

2000

48.5

                             
 
Government Officials
Last Name First Name Title E-mail Phone Note
Building and Code Enforcement bceadm@stcharlesil.gov 630/377-4406

Comments

St Charles, IL has adopted the 2015 IRC including appendices A, B, C, D, F, G, J, K and M.

R905.2.7.1 Ice Barrier.  On all new roof construction and roof tear offs an ice protection barrier that consists of a self-adhering polymer modified bitumen sheet shall be used in lieu of normal underlayment and extend from the eave’s edge to a point at least 24-inches inside the exterior wall line of the structure.”

Section R313.1 Townhouse automatic fire sprinkler systems: Revise to read as follows: Exception No. 2: The requirement for the installation of automatic fire sprinkler systems in            townhouses is deferred until December 31, 2019.

Section R313.2 One- and two-family dwellings automatic fire sprinkler systems: Revise to read as follows:  Exception No. 2: The requirement for the installation of automatic fire sprinkler systems in one- and two-family dwellings is deferred until December 31, 2019.

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.

St. Charles, IL has adopted the 2015 IRC including appendix J. St. Charles, IL Muni. Code § 15.04.020.

Commercial Building Code

St. Charles adopted the 2015 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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Existing Buildings

St. Charles, IL has adopted the 2015 IEBC. St. Charles, IL Muni. Code § 15.04.060.

Other Building Codes

St. Charles, IL also adopted the following codes:

2015 International Swimming Pool and Spa Code. St. Charles, IL Muni. Code § 15.04.025.

2015 International Mechanical Code. St. Charles, IL Muni. Code § 15.04.030.

2015 International Fuel Gas Code. St. Charles, IL Muni. Code § 15.04.035.

2014 National Electrical Code (NFPA 70). St. Charles, IL Muni. Code § 15.04.040.

2015 International Energy Conservation Code. St. Charles, IL Muni. Code § 15.04.055.

2014 Illinois State Plumbing Code. St. Charles, IL Muni. Code § 15.04.050.

2015 International Property Maintenance Code. St. Charles, IL Muni. Code § 15.04.010.

2015 International Fire Code. St. Charles, IL Muni. Code § 15.28.010.

2015 Life Safety Code (NFPA 101). St. Charles, IL Muni. Code § 15.28.010.