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Form a Business

Lock.

Municipal Code of Chicago § 14X-4-403.3.1.1
in effect
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14X-4-403.3.1.1 Lock. The door must be equipped with a deadbolt lock with at least a one-inch (25.4 mm) saw-resistant bolt projection, or with a rim-mounted deadbolt lock or vertical drop deadbolt lock providing equivalent security. Every such lock must be operable from the outside by a key or keypad and from the inside by a turnpiece, handle, or knob which does not require a key or any special knowledge to operate.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2675595Fetched: 10/24/2026

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14X-4-403.3.1.1 | Corpus