I just got my license for cleaning service business for a new build houses but I don't have any idea how to charge and how much to charge/sq.ft and what kind of cleaning the builders want.Is there any body can help me about this.

Thanks
Sally

Shop your competitors to see what they charge, then see if you can do a better job than them and charge less than them.

May I ask why you planned to go into this business without knowing what to charge? Do you have Insurance, are you bonded? All of this is an up front cost.