Common Mistakes in Estimating Building Construction are
- Misread or misinterpreted specifications, drawing, or any other contract document.
- Takeoff omissions or overlaps.
- Missing quotes.
- Estimating by unit prices.
- Using the percentage method to establish the cost of certain systems.
- Prorating indiscriminately.
- Crumbling under pressure to procure work.
- Cutting prices to meet or beat someone else’s quote.
- Underestimating the complexity of a project.
- Expecting and excessive amount of favourable changes.
- Overemphasizing volume purchasing.
- Undertaking a project with incomplete bid documents.
