basically what wheatie said, but slightly different. Here is a copy paste from a post of mine a couple years ago.
http://forums.biggerpockets.com/viewtopic.php?t=3243&highlight=
Posted: Thu Jul 13, 2006 9:22 am
Personally i would take a few BASIC steps, and one of them is NOT "just buying the land and hoping to get zoning and a LDP for I want"
1. ZONING- can you get what you need, density?? style of housing?? ect ect TALK to you county commissioner and/or one of the zoning heads about your intents (talk them to lunch, visit their office, give them flowers lol, just anything to get the county on your side)
2. COMMUNITY- will the community support this type of housing (talk to other developers, visit projects of similar nature preferably in the same area and price bracket).
3. PRELIM LAND PLANNING- do a preliminary layout, please remember stream buffers, specimen trees, ANY jurisdictional waters (its a good idea to have you county water systems guy come walk your property with you to verify any jurisdictional water systems and what the required state and county buffers are for those systems). Also, flood maps are great for prelim, GIS mapping, and FLUM (Future Land Use MAp) are a must look at. Also, verify ALL utilities (don't believe that dang Realtor for one min Wink ) go to the county for sewer and water. Call elec to verify that can increase capacity to withstand your development.
3.a. - Know what the county likes. Get a development standards book so you can understand what and why a engineer should do something. And just because another developer got approved for a certain style project near by doesn't mean you will. Remember standards are changing constantly, and just because that subdivision has this construction feature in it, doesn't mean you can too (doesn't mean you cant either). Did that make any sense at all?
3.b. - COE Core Of Engineers.. These people are a pain in the arse, get a good Environmental company to do your Phase 1 and any permitting you might have to do for stream crossings, wetland compensation, ect. Also, your enviro. company will delineate wetlands for you and transfer the info to your civil eng. There is some type of Core approval the company needs to delineate wetlands, not sure what it is, sry. Your civil eng. will delineate floodplain for you. If your stream free, you SHOULD be able to sleep at night :Wink:
Ok thats very basics, off the top of my head. Im not a writer, so i have my fingers crossed that it makes sense.