There is no way to answer this as every state/area is different. The best way is to call people that already do it, and get an estimate over the phone, use that as a base point.
This is hard to answer because so much goes into pricing. I have a friend that does cleaning and she wrote a basic article about pricing residential cleaning-- http://www.ehow.com/how_5041170_charge-c�� You can also check my profile for links to my Squidoo lens about starting cleaning businesses. I have tons of hints and resources for you!
depends on how much money you want to make. who licenses a business for housecleaning ? what regulatory body?