Depending on the contractor you will find that drilling a well is priced either as a package price or on a per foot basis. Even packages will have a set drill price beyond the package depth. Though the drilling is the same for any type of application for the well. With residential wells they need to cover what is required by the local and state laws for production purposes.
Commercial applications generally require larger amounts of water such as for cooling equipment or used for a public water supply. In these situations, the well will need to put out large quantities of water. Sometimes larger diameter holes are dug to help suffice the anticipated demands. Also, well development or hydrofracturing may be necessary to pick up more water when the drilling alone did not find the necessary gallons per minute required.
Contact one or several of our well drillers and they can assist you in your specific water well needs and discuss your individual situation.