It can depend on where you live,but you have to know what you are pricing
and if you ask the question from others about the pricing in your area,that's only going to get you so far, more importantly it can get you into serious trouble,and will if you follow it.
Take for example a car purchase-there's a real difference in price from a camero with standard equipment and a bentley with standard equipment.
They are both vehicles with 4 wheels, doors, motors, and they both perform the same function.
But the difference in the price tag is 3 to 4 times as much.
When I see people asking for square footage numbers I see people that do not have a clue what they are doing or getting themselves into.
Square footage prices are only good for specific applications, NOT for most construction cleaning.
When you go into a general contractors office,one of the first questions out of their mouth is "what do you charge by the square foot"? why?
Because most of these guys are no good and I'm talking about character.
They want to see you be so naive and stupid that you would actually answer that question.
You should never answer that question,ever.
This is not how you get construction cleaning contracts,but this forum is loaded with people that are doing just that and getting ripped off everyday.