An HOA property manager asked a plumber from Aquatek company to come out to give an estimate on a water heater replacement work. The contractor actually performed the work without giving a quote and without getting an authorization to do the work. Aquatek then sent a bill of $6000 (compared to other contractors’ quotes were $4000 and $4200) along with the Pre-lien notice demanding the payment in full. Is this legal? What are the options for the property owner? Thank you!