I own a towing company and want to start towing cars off private property what do i need?

what type of paper or forms do i need to make it legalI own a towing company and want to start towing cars off private property what do i need?
Lots of parking lot owners have a deal in place with tow companies, they pay a fixed quoted price to have illegaly parked cars towed.I own a towing company and want to start towing cars off private property what do i need?
You'll need the owner's permission - in writing.

And depending on the year of the vehicle and the state that you live in, you may also need the title.I own a towing company and want to start towing cars off private property what do i need?
Lots of parking lot owners have a deal in place with tow companies, they pay a fixed quoted price to have illegaly parked cars towed. Apartment complexes, shopping centers, businesses that draw traffic, even some cities sub-contract the towing.