If your home builder is not familiar with contractors that install residential fire sprinklers, you still have several options.
Most contractors have Web pages describing their capabilities. You can also look in your local Yellow Pages under “Sprinklers, Fire”
Ask your local or state fire marshal if contractors in your state are required to be licensed. If they are, contact the state licensing board for a current list of licensed contractors.
Contact fire sprinkler contractor associations for names of residential sprinkler contractors in your area.
Any professional fire sprinkler contractor can install sprinklers, but for best results look for a contractor that specializes in residential fire sprinklers or one that has a residential sprinkler installation unit within the company.