Interest in projects certainly always exists here, but what does that have to do with the 2 plots of land? Are you planning the development of these 2 plots of land for your employer? Since you have only built multi-family houses so far, are you not familiar with the single-family house sector? The house shown so far is rather special – if a private person justifies here why certain things are chosen for their own house (e.g. the bay window, the many walls at a 45° angle), it can be understood. For a sales object – if you absolutely want to develop it yourself before selling – functional standard floor plans like Town & Country Flair or similar would be better suited for later sale, as it is ultimately the most sold house in Germany. Also, a house type that can be built (almost) identically on both plots would at least further reduce planning costs.