I am checking a possibility of certifying a renovation of existing 3 storey old residential building in Europe under LEED 2009 NC. Is that possible? I thought buildings have to have at least 4 stories to be able to receive a certificate. Discussions on this forum makes me doubt that, people here are certifying three storey buildings in a blink of an eye as I read through posts... Straight answer to this silly question is really appreciated... Thanks.