What legal grounds do homeowners associations (HOAs) use to restrict backyard courts?

Homeowners converting tennis courts or backyard slabs into private pickleball courts frequently face cease-and-desist injunctions from neighbors. The legal basis rarely hinges solely on municipal decibel statutes; instead, litigators invoke HOA Covenants, Conditions, and Restrictions (CC&Rs) governing 'unreasonable private nuisance' and the common-law right to 'quiet enjoyment of property'. Because repetitive impulse sound penetrates double-paned windows even at 100 feet, courts in California, Florida, and Ontario have consistently upheld HOA board bans on evening play, restricted daily hours, or required removal of court markings.