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Accessory Structures in Arlington Heights, IL (2026)

1 verified accessory structures rules for Arlington Heights, Illinois, sourced directly from the municipal code and official government pages.

Verified from official government sources

Shed & Carport Rules

A backyard shed in Arlington Heights is capped at 300 square feet and must sit in the rear yard, at least three feet from the side lot line and five feet from the rear lot line. Municipal Code Section 28-6.5 also caps accessory-structure height at 15 feet above grade and limits how many accessory structures a lot may hold.

Arlington Heights Backyard Shed Size Rules

Some Restrictions

Arlington Heights Municipal Code § 28-6.5 (Accessory Structures)

6.5 Accessory Structures. 6.5-2 An accessory structure including but not limited to a tool shed, storage building, detached garage, tree house or gazebo, shall only be located in a rear yard. An accessory structure may be located no less than three feet from a side lot line (except for a tree house which shall be setback five feet and no closer than ten feet to the principal structure), and no ...

Looking for Cook County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Arlington Heights city rules.

Accessory Structures in Cook County