Common examples of things that work would be documenting a error in report( room count square footage etc) Challenging condition adjustments typically a losing bet, but if for example a comp used was in significantly worse condition see if your favorite Realtor can confirm any issues with listing agent that didn’t make it into mls.

The appraiser will make adjustments for the new upgrades but the value is normally in the square footage unless a major rehab is done. 

My wife and I purchased a condo unit in the greater Boston area and noticed that the square footage listed in the town's property database overestimates the total square footage of the unit.

If you are selling a 15,000 square foot mansion your contingency period will be long: lots of time to inspect all of the square footage, lots of individual experts needed to evaluate the different components and lots of time needed to complete the mortgage underwrite because of the size of the loan. 

If the square footage is different, an appraiser will adjust.

It can be anywhere from $12/sqft to 18/sqft depending on if it is pier and beam or slab and how deep the piers are or how deep the slab is (slopes = more concrete).John, Is your PSF cost for area of foundation or for the home's total square footage?

Definitely recommended for anyone looking to get into section 8 in Chicago.My question is this - Is a closet in a bedroom mandatory, and is it counted towards bedroom square footage?

You don't have the square footage to spread out the cost of the land.Work it backwards.Does he really think you can BUILD for 35/ft?

Value wise I would think square footage and Bed/bath would  set the price.

Single families in the same neighborhood with half the square footage are selling for almost 400.