legal deposit limit.
I had a building contractors license in Calif and there was a legal limit on how much deposit money you could collect. I worked for one guy that would take his left over materials to a new job and collect a materials delivery charge from the unknowing home owner. AND HE FINally went broke. I know one guy that teaches Auto at the college and also works out of his farm shop. He collects the first month's space rental then every week e mails picts of the work he has done and sends the bill. If there is no payment the space rental applies and the lein procedure starts after 30 days. . the guys that want a big deposit are usually going to rip you off.