in general for LEED ND-Plan, must the architectural plans submitted for LEED review be approved by local councils already or may they be still in the planning stage? 

Is it enough to show, for instance for water conservation, that the legally approved blueprints for the neighborhood include conditions for a building permit that list maximum water usage for each type of fixture (e.g. toilets with water usage of less than 4 liters per flush) - or must the detailed plumbing plans for each building be submitted?

I have the same question for several of the credits - because we are planning a green neighborhood, but each building will be built by a separate contractor. We were hoping to draft a master plan for the project that each contractor could be obligated to adhere to - we are unable to control the execution timeline for all the buildings. 

thanks for any help!