How to Use This Calculator
- Enter total living area across all floors.
- Choose floor count and quality, then edit all cost assumptions.
- Add garage area and rate, then calculate the budget.
Calculation Formula
Worked Example
A 2,200 sq ft, two-story standard home at $90 material and $60 labor per sq ft has a $346,500 base house cost using the 1.05 floor multiplier. A 440 sq ft garage at $70 adds $30,800, for a $377,300 estimate.
Factors That Affect the Estimate
- Foundation and soil conditions
- Roofline and structural complexity
- Kitchen and bathroom specifications
- Energy performance and mechanical systems
- Garage, porch, deck, and exterior work
Frequently Asked Questions
Does floor count multiply the entered area?
No. Enter total area across all floors. Floor count only applies the visible complexity multiplier.
Are the quality multipliers editable?
The displayed preset multipliers are examples. You can change them in the centralized project data before deployment.
Does this include land?
No. Land purchase, financing, demolition, and unusual site work are outside this estimate.
Why is garage space priced separately?
Garage construction often has a different finish and systems profile than living space.
Can this replace a contractor quote?
No. It is an early planning model, not a construction bid.
Important Disclaimer
This calculator provides a planning estimate only. It is not a bid, appraisal, or professional construction advice. Confirm quantities, code requirements, labor, permits, taxes, site conditions, and current local prices with qualified professionals before making financial decisions.