Arlington Heights, IL Landscaping Rules: Grass Height Limits (2026)

Arlington Heights property maintenance ordinance requires all residential and commercial properties to keep grass and weeds maintained at a height not exceeding 8 inches. This applies to all areas of the property including front yards, side yards, rear yards, parkway strips, and vacant lots. When a property exceeds the height limit, Code Enforcement issues a notice of violation giving the owner a specified period (typically 5-7 days) to mow and maintain the property. If the owner fails to comply after notice, the Village may arrange for the property to be mowed by a contractor and the cost is billed to the property owner or assessed as a lien against the property. The ordinance applies year-round during the growing season, roughly April through November in the Chicago suburban climate. Managed natural landscapes, rain gardens, and ornamental grasses that are intentionally maintained may be exempt if they appear deliberate and are maintained with clear borders. Vacant lots are held to the same standard as occupied properties. Property owners who will be away for extended periods should arrange for lawn maintenance to avoid violations.