Knollwood Sign Regulations: Holiday Displays Rules (2026)

Residential holiday displays across Lake County — Waukegan, Libertyville, Gurnee, Highland Park, Lake Forest, and unincorporated areas — are treated as protected expression and generally do not require permits. Municipal codes focus on safety: decorations cannot obstruct sidewalks, driveway sight triangles, or intersection visibility under Lake County UDO §12.4. Outdoor electrical must be UL-rated for outdoor use and protected by GFCI under the 2020 NEC adopted by Illinois. Inflatable decorations must be anchored against Lake Michigan lakefront winds (Lake Forest, Highland Park). Most cities apply an informal 30-45 days before / 15-30 days after guideline — Lake Forest Code Ch. 46-35 is stricter, limiting display to Thanksgiving through January 15. Amplified noise from displays is subject to municipal quiet-hours ordinances (typically 10 PM to 7 AM). HOAs — especially in planned communities like College Trail (Vernon Hills), Knightsbridge (Libertyville), and lakefront Lake Forest neighborhoods — often impose stricter uniform rules on colors and timing.