Re: pricing per sq foot
I have done a few houses for a simple square footage charge, and none of them have been worth the time.
However, I'm learning from my early mistakes...I think.
I now add to the standard/basic square footage price for any upgrades, added drops, etc. This is discussed prior to performing any work, and given to the customer in writing so any added fees can/will be as clear as possible for the customer.
Again, I'm not sure if this is the best way, but it is a way to give the customer a number to work with for his/her estimating. Since most are wanting a cost per sq. foot number from each contractor.
The only time I see a flat square footage bid can work is when the work is being performed for a builder that will be building only a minimal number of floor plans over and over and over...
Good luck!