The Building Commissioner is authorized to issue formal written interpretations of the Chicago Building Code per Section 14A-10-1002. These interpretations are enforceable in the same manner as the building code.

A - ADMINISTRATION

• A10-2021-001 Pre-2017 Interpretations and Memos (for referenced documents, use link under "Related Links" on this page)
• Superceded: A10-2018-001 Prior Code Interpretations and Memos

B - BUILDING CODE (NEW CONSTRUCTION)

• B11-2018-001 2018 Update to the Illinois Accessibility Code
• B14-2018-001 Noncombustible Exterior Walls
• (Also see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

C - CONVEYANCE DEVICE CODE

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

E - ELECTRICAL CODE

• September 2024 Electrical Bulletin (Line (Supply) Side Connections of Service Conductors)
• (Also see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

F - FIRE PREVENTION CODE

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

G - FUEL GAS CODE

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

M - MECHANICAL CODE

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

N - ENERGY CONSERVATION CODE

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

P - PLUMBING CODE

• P7-2021-001: PVC Pipe in Mixed-Occupancy Buildings
• (Also see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

R - REHABILITATION CODE

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)

S - SIGN CODE

• None

T - TRADE LICENSES

• None

X - MINIMUM STANDARDS FOR EXISTING BUILDINGS

• None (see A10-2021-001 for effect of clarifications and memos issued prior to 2017)