It's not unusual. If you are not comfortable tell them you are willing to do 50% upon delivery of materials, balance upon completion.
In Northern Nevada, call (775) 688-1141 or in Southern Nevada call (702) 486-1100. the completed information forms to the Nevada State Contractors Board office.
The three general categories of costs included in manufacturing processes are direct materials, direct labor, and overhead. Note that there are a few exceptions, since some service industries do not have direct material costs, and some automated manufacturing companies do not have direct labor costs.
Work to repair or maintain property valued at less than $1,000, including labor and materials, unless certain conditions apply (e.g., building permit required, type of work, contractor's license).
As a general rule of thumb your contractor rate should be at least 50% more than you'd get for the same work as an employee.
The License Monetary Limit is the maximum contract amount that can be undertaken for one client on a single construction site.