Hi, I was wondering if anyone here might be able to help me out. I was entertaining the idea of expanding my patio, currently just poured cement. I was going to use 4x8 pavers, the total project area would be approx. 160 sq. ft. Right now, this area is covered with 3/4-1 inch rounded stones. Currently, the cement patio is about 4-5 inches higher than the rocks near the cement, and about 2-3 inches higher on the opposite end where the pavers would end. So now, my questions. I've read that a 4 inch base is relatively standard. If my pavers are approximately 2 1/2 inches tall, and I laid down a 4 inch base, this would be above the current patio. I live in a townhouse, and the association rules dictate that it would have to be the same height as the current patio. I was wondering if a 4 inch base is absolutely mandatory. I was going to tamp down the existing stone and work on top of that. I'm not sure how much base to lay down and what I should use. I'm hesitating to pull the stone out and dig underneath it. The ground is very hard clay, and I'm not allowed to bring any heavy duty tools or equipment back there (association rules again). For a project of this size, can anyone advise how much base I would need? Any other tips/advice/ideas/suggestions? Given this setup and these limitations, is it even worth it trying to undertake this project? I know I can pay someone to do this, but to me that takes a lot of the fun out of it, and it wouldn't be nearly as rewarding. But at the same time, I'd like it to be done right. Thanks in advance for your help.