i have also done construction and renovation cleaning. Also do residential cleaning. for construction and renovation cleaning I charge $350 per person per day (10 hour days) as I pay my cleaners well. For domestic cleaning I have a minimum rtae of 3 hours @ $40 p/h. If they purchase a set number of cleaning hours the rate gose down depending on the number of hours purchase.
I also present all my customers with terms and condition of my service, the rates for my service and a contact page etc. When they sign the terms & condition I start the cleaning and usuealy I get paid in advance.
I hope that this helps