Home Building cost Per square Foot

FACTOR	LOW ↓	HIGH ↑
Roofing Materials	A typical dimensional shingle roof costs $22, 000 installed.	An upgraded dimensional shingle roof adds anywhere from $10, 000 to $40, 000 depending on selection.
Exterior Veneer	Typical residential siding averages as low as $8/sq ft, while brick and stucco average $15/sq ft.	Stone veneer can cost upwards of $30/sq ft.
Flooring Selection	Builder-grade flooring assumes a $6/sq ft allowance for wood floor and a $25/yard allowance for carpet.	High end materials such as engineered hardwood start at approximately $12/sq ft, and we have found a $45/yard carpet allowance to be more realistic.
Appliance Selection	A nice GE appliance package ranges from $8-12, 000.	High-end SubZero and Wolf appliances can exceed $35, 000.
Home Shape & Design	Corners cost money. The least expensive home to build is a simple salt-box design.	Today’s custom homes are rarely square, featuring many corners – all which add building costs.
Foundation, Exposure, Retaining Walls & Decks	A flat lot with no slopes or exposures adds $0 in building expense, a partially exposed basement typically adds $15, 000.	A fully exposed basement can add $50-150, 000 in additional costs such as frost footings, waterproofing, added foundation height, retaining walls, decking and exterior veneer.
Soil Conditions, Footings & Lot Preparation	A typical “subdivision lot” requires approximately $7, 000 in lot preparation costs.