Ontario, CA Property Maintenance: Garage Sale Rules (2026)

Garage sales, yard sales, and estate sales in Ontario are regulated under Ontario Municipal Code Chapter 5 (Business Regulations). Residents may hold up to three garage sales per calendar year at the same residential address, and each sale may last no more than two consecutive days. Sales must be conducted only during daylight hours, typically between 7:00 a.m. and sunset, and must occur on private single-family or owner-occupied multifamily property (not apartment common areas). Only used household items belonging to the residents may be sold; items purchased elsewhere for resale, or new merchandise, are prohibited because that activity would require a Seller's Permit from the California Department of Tax and Fee Administration and a City business license. Sales cannot block sidewalks or obstruct driveways of neighbors, and signs may not be placed on utility poles, street trees, or traffic signs under OMC Chapter 8. Multi-family garage sales organized as fundraisers through a church or school must obtain prior approval. Violations can result in administrative citations up to 500 dollars.