Floor elevation differences

[WolffG]

I am doing a set of four attached two story town house units, all with almost identical but mirror reversed floor plans.
However, because of site conditions, each unit is at a different finished floor elevation, between one and two foot different from its neighbor.
What is my best strategy to develop the plans and documents without getting myself into a complete muddle with levels?

[Andre Carvalho]

You can create one model and then link that model into a site. You can copy, mirror, move up or down, rotate them and then share the coordinates and give a specific name to each. The coordinates will be saved back to the main building file.

Andre Carvalho