Mark W Arnold

Alarm & Security Contractor · Chicago, Illinois

License number	124001549
Trade	Alarm & Security Contractor
License holder	Mark W Arnold
Location	Chicago, IL 60634
Licensed since	2004
License expires	05/31/2029
Status	Current, Active (as of 2026-08-25)

Verify license 124001549 on the official Illinois portal

What this record tells you

Mark W Arnold holds Illinois license 124001549, authorizing work as a alarm & security contractor — 22 years of continuous licensure. It is one of 106 active alarm & security contractor licenses in Chicago, so you have local alternatives to compare quotes against. Confirm the current status on the official state portal before signing a contract.

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This page is generated from Illinois public license records for consumer-protection purposes. Mark W Arnold has not claimed this page, is not a sponsor, and no endorsement is implied. Always re-verify license status and insurance before hiring. Verify a Pro is a service operated by Scion Media, not affiliated with any government agency.