Scott, the poles are approx. 20-25ft. tall. The reason for changing fixtures is that the existing ones do not give off enough light. They are some sort of old flood lighting, I've never seen before. There shouldn't be any cars in the parking lot if I do the job, since this is a church parking lot, and I'll schedule it during a off day of the church. I had to get the bid in before Monday, so I have already called a preliminary bid of $ 9600.00 with exceptions. I haven't done anything in writing yet, til I see if they are interested. Last year they wanted the same thing, and I gave them a bid of $ 6700.00:( This was on a different type of flood light though, but I'm glad they didn't accept my offer then. I will probably know something Monday. Thanks for all the input. Steve...