Nic It sounds like you should study land development.Buy a few books. It is not very complicated but it is hard to do. It sounds to me like you’re thinking about buying a lot from a subdivision with its maximum potential tied to current zoning, which could in fact render it practically useless. Do you know what that zoning is? Ask the planing department what they have coming down the line in the region . Have you checked the permissible uses? How much does it cost to exploit them? Do you know if it won’t be under eminent domain before you make your killing off of it. Also, what someone did with 400 acres in Temecula, or anywhere else, isn’t relevant in the slightest.