
Not all states have licensing requirements.To determine legitimacy ask about professional license, liability insurance, Better Business Membership, etc.
If so, how many? Ask for examples. Be aware: if the investigator discloses confidential information regarding past cases can you trust him with your confidential information?\012
When does billing begin? Am I charged for travel time? Do you charge for mileage? Is there a minimum hours charge for surveillance work? Are there any other costs?\012