Methodology & Data Policy
Every number is sourced, dated, and auditable. Here's exactly how we build the data.
We start with the Remodeling Magazine Cost vs. Value Report (published annually by Zonda/HanleyWood), which surveys actual project costs and resale value across U.S. metro areas. This gives us the baseline cost and resale return percentage for standard and high-end bathroom remodels in each market.
We then adjust for regional labor costs using Bureau of Labor Statistics data for NAICS 2381 (foundation, structure, and building exterior contractors) and NAICS 2383 (building finishing contractors). Each metro carries an explicit labor multiplier derived from BLS Occupational Employment and Wage Statistics for the relevant trade codes.
The fair range (P25–P75) represents the 25th to 75th percentile of verified project costs in each metro — the range where most homeowners land when using licensed contractors with pulled permits. The negotiation floor (P15) is the 15th percentile: the price at which 15% of contractors already complete the work. It's not a fantasy number — it's your statistically verified counter-offer anchor.
The spread (average minus floor) represents the dollar gap between what the typical contractor charges and what competitive contractors accept. Markets with more contractors show larger spreads — more competition means more negotiating room.
Resale return rates vary significantly by region. Hot Sun Belt markets (FL, TX, AZ) show 59–68% back at sale because buyers have competing lifestyle options (pools, outdoor living). High-cost coastal markets (Boston, Seattle, San Francisco) show 80–87% back because updated bathrooms are a buyer expectation, not a differentiator.
The index is updated quarterly. Mid-quarter updates are triggered by significant BLS data revisions or material price shifts exceeding 5% nationally.
No contractor can pay to appear on this site or influence their city's data. We may connect homeowners with licensed contractors in their area. Pricing data and editorial content are independent of any contractor relationships.