Orientation of house

Hi. When I import a 2d floor plan and create 3d building from it how do I get the house the exact orientation. Can you change the direction of north in relation to the house? Or can you rotate the building? I need this to be precise so my shadow diagrams are accurate.

You can rotate the building to orient to the site. You could add the location to geo-locate the model and if you need to, you can install the Solar North plugin from the Extension Warehouse and set north manually.

That there, best advise, used in combination of the others in order to ease modeling requirements.