Townhouses might be better for rentals as they often have 2 or 3 times the square footage of the SFR in the same area.

I would suspect that a median price for a MLS listing in that neighborhood for a 3/1 would be around $280ish, depending on sq footage.  

Would you account for the square footage and rooms like you would for a normal basement (i.e. worth less than above grade) or, since it feels like the above grade rooms, would you account for this as if it were above grade?

On SFH, square footage is not a "required field" but it is on at least the duplex's.

Does it go by percent of square footage or number of units or some other calculation?

The flips that make money are the large ones where square footage is being added.

The commercial space must account for at least 50% of the total square footage of the building.

i am looking at a condo in foreclosure for $142,000 plan on putting $30,000 down payment the bank foreclosed on it at $123,900 every other condo for sale in the condominium same square footage 1 b 1b r on the market for anywhere between $168,000 to $210,000 buying the property non furnished furnishing it and getting the on site 3 rd party HOA management marketing they clam to do everything even the insurance on the building would i be making any profit to pay it off if i am buying holding and not touching any of the money keeping it invested 

You should pick comps based on the numbers (sq footage, beds, baths, #fireplaces, deck, #garage stalls)Stay within +/- 800 sf. and then adjust for $25 per sq ft difference for any above ground sf.  

I don't know, I look at these places and don't get me wrong they're nice, but 300K seems just too much for the square footage, hence I can hear the bubbling noise ;)