definition
strict definition
foundation company
A contractor that builds a building's foundation system, including piles, caissons, or a mat.
A foundation company is a contractor which builds the foundations for a building whether this involves drilling piles, pouring caissons, or building a mat or other foundation system.
The work constructs the foundation system itself. The examples above identify different forms of foundation work, rather than requiring every foundation contractor to use the same method.
An excavation company moves earth and prepares the site, while a shoring contractor provides stabilizing or protective works. Building the foundation is distinct from those related groundworks.