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In addition to understanding the nuts and bolts of the project, it is important to evaluate the codes applicable to the project. Perhaps even more important than knowing the codes is understanding how the local inspectors interpret the codes in that area. A challenge by a code official can drastically affect a project and can slow the progression of the job. As one of the first elements of a project, the concrete foundation is crucial and a slow down here could result in scheduling challenges. As such, it is often advantageous to hire a foundation contractor who has experience in the geographic area of the project because they will understand how local code officials historically interpret the codes.

"It is important to evaluate how codes are interpreted for a project," Lange says. "One city may apply the code differently than another, so the estimator must account for these alterations when developing the bid. Forgetting these differing interpretations can result in pricing a project too low."

Architects also play a crucial role in the development of an estimate. It is essential to have thorough and accurate plans from the architect that clearly outline the project. These plans provide a clear picture of the house and provide critical information for the foundation contractor. Establishing strong relationships with architects is important because the foundation contractor may be able to offer insight about the best way to construct the foundation. It is much easier to make these revisions before the project begins rather than after construction is underway.

Why foundations are different
One of the most common mistakes made in the construction industry is simply pulling up an estimate from another project, changing the project name and contact information, and sending it on to the new potential client. This is especially true when estimating a concrete foundation.

"Basements and foundations have so many different variables," Lange says. "You need to consider how far the house will stick out of the ground, size of porch and garage walls, ground conditions, the addition of wine cellar or safe room, time of year that construction will take place, as well as code requirements. Not properly accounting for any of these factors can result in an inaccurate estimate."