It's only a 1 bed 1 bath home but on a large lot and so an addition could be made to add square footage.

The house is currently sold as a short sale right now the price they're asking is hundred 40,000 it's hard to get comps in this area do two houses being different sizes different square footage so I'm going by the square foot what I'd like to know is if I can actually come down on the price that the bank is asking for do they normally take a lower price than what they're asking for I would assume so but I just want to check and if so how much lower do they usually go thank you in advanceDondi

Most task estimates are based on the square footage times the cost of that task per sqft.

This means houses like you said of similar product sold in the last 3 - 6 months in the same neighborhood or very close within the same square footage and having similar features etc....

In order of importance I do, Style of home, square footage, bed/bath count, basement comparison, then I move on to things like lot size, on or off street parking, garage, etc. 

You don't start using the income approach to valuing a property until you hit 5 units or more.If you want to determine the FMV of a duplex, you need comps; preferably from the same neighborhood, and preferably within 20% of the square footage of the subject property.  

Also great when you can find a home with mis-represented sq footage in your favor!

Remember the Sq footage of the building is the floor space, not the wall space.

,The term for adding another floor is a "Pop Top remodel"When adding brand new square footage, the standard cost to use is $120/square foot.

i sure will @Bill Scott just need to know your criteria price range, square footage, bed and bath