I heard somewhere that as a general rule of thumb a developer has to get about 60% of units pre sold for them to get bank financing for a project. I am not completely sure on this though, so if anybody else has an idea or comment, that's cool. Regarding the penthouse, has anybody else noticed that the two bedrooms will have a 'mansard' style roof and so the useable square footage of the rooms will be lost to the slope of the roof, if I am interpreting the renderings correctly?