Well... the proportions just don't add up for me... 100k for the plot and 490k for the house without additional construction costs... and then "only" 167sqm. If this were a plus-energy house with 3m ceiling height, an extremely difficult foundation situation, complete house automation down to the last corner, the most exclusive bathroom fittings, huge window fronts also around the corner, a large roof overhang, all lift-and-slide doors fully electric (and connected to the KNX bus) etc., then you could somehow arrive at such a price. Or building costs in BW are actually twice as high in final price (wages + materials) as here in East Germany, which I somehow can't imagine.