Do you Need a cdl for a ford f700?

Depends. It is often sold and registered as a 26,000 lb. GVWR vehicle (the actual GVWR is 24,500 lbs). So, by itself, it would not require a CDL. However, if this vehicle is towing a trailer which puts it at over 26,000 lbs. Gross Combination Weight Rating, then a CDL would be required (Class B if the trailer is under 10,000 lbs. GVWR, Class A if the trailer is over 10,000 lbs. GVWR).