Development Codes

  1. Lake County Ordinance Revision Open House, March 15

    Several Lake County Departments are reviewing and updating their ordinances, and we want to hear from you! Please join us for an open house to review the changes, and provide feedback. Two open house sessions available on March 15. Learn More.
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Building Codes Adopted for Unincorporated Lake County


The Lake County Board has adopted the following building codes with amendments. The list of amendments is available below.

Access the Lake County, Illinois Code of Ordinances Title XV: Land Usage Chapter 150: Building Codes

International Residential Code - 2012 Edition


  • Governs construction on one and two family detached dwellings
  • Guidelines for the construction of one and two family detached dwelling. (For specific code requirements please contact the office at 847-377-2600)
  • For residential fire suppression system requirements, contact the Fire Protection District within which your project is located.
Published by:
International Code Council®
​5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533

National Electrical Code© - 2011 Edition


  • Adopted by Ordinance April 2014
  • Governs construction on one and two family detached dwellings and commercial project
Published by:
National Fire Protection Association, Inc.
One Batterymarch Park
Quincy, MA 02269
Phone: 800-344-3555

State of Illinois Plumbing Code Current Edition


State mandated code with County Amendments

Published by:
Illinois Department of Public Health
525 W Jefferson Street
Springfield, IL 62761
Phone: 217-524-0795

International Building Code - 2012 Edition


Governs construction of commercial projects including multi-family projects with more than 2 units.

Published by:
International Code Council®
5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533

International Fire Code - 2012 Edition


Governs construction of commercial projects including multi-family projects with more than 2 units.

Published by:
International Code Council®
5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533

International Mechanical Code - 2012 Edition


Governs construction of commercial projects including multi-family projects with more than 2 units.

Published by:
International Code Council®
5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533

International Fuel Gas Code - 2012 Edition


Governs construction of commercial projects including multi-family projects with more than 2 units.

Published by:
International Code Council®
5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533

International Swimming Pool and Spa Code - 2012 Edition


Governs the construction, alteration, movement, renovation, replacement, repair and maintenance of aquatic vessels.

Published by:
International Code Council®
5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533

Illinois Accessibility Code


  • State mandated code
  • Governs construction of commercial projects including multi-family projects with more than 2 units. Applies to all “public facilities” and “multi-story housing unit” as defined and governed by the Environmental Barriers Act and located in whole or in part, within the legal geographic boundaries of the State of Illinois unless specifically exempted.
Published by:
State of Illinois, Capital Development Board
Wm. G. Stratton Building
401 S Spring Street
3rd Floor
Springfield, IL 62706
Phone: 217-782-2864

International Energy Conservation Code - 2012 Edition


  • State mandated
  • Governs construction of one and two family detached dwellings and commercial projects
Published by:
International Code Council®
5203 Leesburg Pike
Suite 708
Falls Church, VA 22041-3401
Phone: 703-931-4533