好项目啊。 简介在内

水边的话会有code to regulate the boundary of building limit, 比如wetland分级，最少要75 feet，多至200ft. 如果湖边就是shoreline protection regulation to find the buffer. zoning requirement 网上看zonging map即可，但是在水边大约要subjects to regulations identified in local shoreline master plan. 

需要找consulting company 去与市政打交道。 可以自己到市政问一下，认为有戏可以下offer that subjects to the Feasibility Study - say, 6-month long. During the period you can hire a development company to conduct the conceptual plan, file a pre-application meeting (while submit the conceptual plan so the City staff can comment and bring all the detailed requirements during the meeting).  Based on the comments from the meeting with City Staff, you revise the conceptual plan and see if the land can still afford 50-unit developments.  Your engineer will provide a quick & rough cost estimates on land, permitting, utilities & roads, survey & recording - that gives you the cost per lot.  Or you may talk back with the seller to re-negotiate the price (据说在地产还不是大热的时候买家还可以与卖家讨价还价的）.  Sounds like a SEPA process inevitable in order to obtain the "preliminary" approval.  好项目啊，流口水ing， 我们这里要天价了。