How the estimate works
How we calculate the estimate
Room measurements determine the quantity. Published prices, local service rates, and clearly labeled assumptions determine the range.
Last updated August 17, 2026
Material ordering
Carpet is calculated from feasible roll cuts. Laminate is calculated by adding the stated layout allowance and rounding up to whole cartons. Both methods can produce an order quantity above the measured floor area. The estimate shows that difference before purchase.
Laminate floor preparation
A laminate total covers floor preparation only when the selected condition includes a labeled allowance. An unchecked floor keeps preparation separate. Moisture, movement, rot, active cracks, hazardous materials, and structural work require an on-site assessment before a combined price can be calculated.
Sources and estimates
Published prices and specifications, calculated amounts, and service estimates are kept separate. Evidence grades identify the source behind each figure. Forecast accuracy can be measured only after written quotes and final invoices arrive. Low, midpoint, and high mark budget boundaries; they are not statistical confidence intervals.
Quote comparison
The checker compares a quote after every required line item is confirmed. Missing work stays unpriced. The result locates a comparable total within the range. Assessing contractor fairness remains outside its scope.
Results and version history
Each market model carries a date and is frozen before its estimates are compared with written quotes and final invoices. Any recalculation receives a new version, preserving the earlier result.