Introduction
Construction cost estimation is your company's most important financial process. A quote that is too low eats the margin. A quote that is too high is lost to a competitor. A quote that is finished too slowly misses the deadline.
Most small construction companies suffer from all three problems at once. The reason is not bad estimators, but calculation tools that do not support accuracy or speed.
Why is cost estimation too slow in many companies?
A typical cost-estimation process without efficient software goes like this:
- Drawings are printed or opened as a PDF.
- Quantities are measured by hand or guessed from experience.
- Prices are fetched from old Excel files, emails and memory.
- The document is assembled on a Word or Excel template.
- The quote is sent by email.
This process takes days. In the rush shortcuts are taken, and shortcuts in cost estimation often mean underpricing or eating into margin.
Accurate calculation is based on your own real costs
The most common cost-estimation mistake is using the industry's general price references instead of your own company's real costs. Every company is different: work efficiency, logistics, subcontractor prices and indirect costs vary considerably.
An accurate tender price comes only from your own history data:
- What did a similar work phase cost last time?
- What was the real number of hours compared to the estimate?
- Which materials were used more than planned?
When the calculation template is based on real, realised costs, the accuracy of the tender price improves substantially, and at the same time the risk of under- and overpricing decreases.