What just came to my mind when I looked for plots in Naunhof plus 5km at an internet provider. Sometimes house sellers/house building companies simply "attach" themselves to the tenders of the municipalities on their municipal websites. Some/many municipalities do not publish on internet platforms but only on their websites and in their official bulletins/municipal newsletters. That means if you see on an internet platform that a house building company has listed one or more plots (the location is usually always indicated), you can check on the website of the respective municipality whether it is a municipal plot or a new development area of the municipality. Just additionally, to save a little work. Small restriction: Since some municipalities sell their plots/development areas directly to house building companies, there are also cases (I don’t know how often) where you are tied to a specific developer. It just caught my attention because in Naunhof two house sellers offer several plots.