LTc4 and buildable land

Hi,

I am following a project of a hotel complex located in the Italian alps.

We are aiming at achieving points from LTc4 opt. 1 and I am a bit confused about density calculations.

If I intended correctly, both combined and separated calculation are referred to buildable land as defined by LEED glossary: “the portion of the site where construction can occur…”

My interpretation is that we have to consider only the portion on the 400-meters range from project boundary where construction activities can “legally” occur referring to local city planning regulation.

In my case, I have:

1. A portion of forest where only preservation activities are allowed;
2. A portion of farmlands where the city planning allows for a small density (0,03 cubic meters /sq m) but also affected by a hydraulic constrain that prohibits new constructions; therefore only small additions to existing building (up to 10%) can occur;
3. A very few lots inside point 2 area which currently have building and could actually build some small addition;
4. A sport complex with soccer fields but without any buildings which is almost 100% pervious;
5. A former railway area which is now decommissioned to become a regional bicycle-way where construction activities are not allowed but a few buildings are present;
6. An area identified for public facilities such as town hall, police station, church already developed;
7. A cemetery.

I would like to ask your opinions on which of these land portions are applicable within the buildable land definition and credit scope.

Thank you very much!