What does it cost to hire a private investigator or detective?

Typical private investigator rates fees run between $ 45.00-$ 250.00 per hour depending on the agency. This is paid whether it is for investigative work or simply for time spent traveling to and from the job area. Then there is also usually a fee per mile on top of these fees that range from .20 cents per mile up to as high as .75 cents per mile.