hi. we also just built, but in Austria. however, we decided on a prefabricated house because it is fast. the house itself was ready to move into in less than six weeks after being erected. we don’t have a basement because the benefit and the cost were not clear to me. a fully finished basement would have cost about 50,000 euros extra. my thought was that for less than half that amount I would build a carport with appropriate rooms for storing stuff that would have gone into the basement. we have now spent 280,000 euros for the plot (767 sqm), house (120 sqm), earthworks, foundation slab, turnkey, cistern for rainwater. another reason in favor of the house. if we had built solidly, we would have had to choose every tile, every door, the floor coverings. visit many hardware stores, etc. so we just went once to the manufacturer’s central office, chose bricks, gutters, windows, floor, bathroom, kitchen, simply everything, and were done in 3 hours. regards