Total conditioned addition area in square feet. Used as the primary sizing metric for all area-based cost components.
Select the vertical configuration of the addition. Affects foundation, structural framing and roofing costs.
Foundation type for the addition; influences excavation, concrete, and structural costs.
Select the finishing level for interior and exterior finishes; affects unit material and labor rates.
General regional cost profile. The estimator uses this to apply labor and material multipliers (local market index).
If you have a verified local material cost per sq ft (materials only), enter here to override the tool's default material assumptions. Leave blank to use market defaults.
Include architect or designer fees in the estimate (adds a percentage allowance).
Check if local building permits are required for this addition. When true, standard permit and inspection allowances are added.
Select the currency for calculations