Common Estimating Mistakes Contractors Make

Cost estimating has to be accurate. It’s essential for the completion and success of any small business or larger construction buildingng project. The biggest challenge is staying on budget, meeting deadlines, and all resources are readily available. Clearly documenting the scope of the work and the inherentt details can be a challenge. However, even the most experienced contractors make mistakes leading to unhappy clients, cost overruns, and lost profits.

Most Common Mistakes In Estimating

True labor costs include, workers compensation, payroll taxes, benefits, training, and non-productive time. Underestimating the cost of a crew or subcontractorr will reduce your profit.

Request updated supplier quotes on volatile materials, like lumber, Steel, Concrete, and fasteners etc.

How can you seriously bid on a project if you haven’t visited the site. Soil conditions, underground utilities, and excavating costs can affect the cost of the project, if you haven’t seen it and things don’t show up on blueprints.


Every error can carry significant consequences. You have to be proactive in planning, constant reviewing of the project, and keeping on budget. Minor errors can lead to profit loss, and damaged customer relations. Sharpening up on your estimating skills is not only an investment in your career but ultimately the success of your project.

Here Are Some General Items Frequently Missed

Permits Inspections,and Officials

Never assume inspections will be on time. Visit local authorities early on when you’re planning a project. Before you get surprised, get an idea of the permit costs and compliant regulations.

Final Thoughts

Try building a consistent process of calculating all costs with checklists for each trade. Subcontractors, Suppliers, Materials, and actual costs of previous projects completed. To avoid mistakes you have to establish clear concise communication with your customers, suppliers, and other managers. hold meetings to discuss the entire project, establishing budget, project scope, and timelines.