How BuildCost Calculates Results

Transparency about our formulas, data sources, and limitations.

📐 Formula

Estimate = (room area × cost per sq ft for that room type) + material grade multiplier. Kitchen and bathroom remodels use higher per-sq-ft rates than bedrooms or living areas.

📊 Data Sources

HomeAdvisor and Angi verified contractor pricing data; Remodeling Magazine Cost vs. Value annual report.

⚠️ Limitations

National averages — actual costs vary by ZIP code, contractor availability, and material grade. Structural repairs, permit fees, and unforeseen issues not included. Always get 3+ contractor quotes.

🕐 Last Reviewed

June 2026. Methodology is reviewed quarterly and updated when underlying data sources or industry standards change.

🚫 Disclaimer

This tool provides estimates for informational purposes only. Results are not financial, legal, or professional advice. Always consult qualified professionals and obtain multiple quotes before making decisions based on these estimates.