Total Cost Formula
Total Cost = (Built-up Area × Cost per Sq. Ft) + Add-on Package Cost
Keep the calculation this clean in the consultation. Start with structure, then add the protection layer that absorbs the late-stage extras.
Budget Details Studio
Review the formula, understand where the number comes from, compare the cost priority, and tune area, package, and add-on choices in real time.
Total Cost Formula
Keep the calculation this clean in the consultation. Start with structure, then add the protection layer that absorbs the late-stage extras.
Cost Priority
Structure shell
82% of the benchmark
Protection layer
18% of the benchmark
Decision rule
If the structure number feels right but the protection layer feels light, change the add-on package before you change the whole construction tier.

Visual Check
A facade reference keeps the budget discussion honest. If the visual ambition is richer than the image benchmark, the number usually needs a stronger package or a more generous add-on layer.
Built-up area
1,500sq ft
Area, package, and add-on tier update the estimate instantly. No form. No call.
Construction package
Addon package
Live estimate logic
Move the area slider, switch the construction package, or change the add-on package. The estimate panel updates instantly so the homeowner can see what actually shifts the number.