Here is also a 35-year-old teacher, unfortunately not a civil servant ;) I am also single and moved into my house exactly one year ago. I was lucky to have received the plot (also in the countryside) from my parents. Otherwise, my house is 155 m2 and I really built cheaply (no basement, white plastic windows but produced in Germany, no controlled residential ventilation, laminate flooring, no KNX, no electric shutters on the upper floor, etc.), had a lot of own work from my father (a trained bricklayer) and other relatives and also benefited from their contacts (neighbor did all the electrical work, acquaintance did all the tiling, etc.). Nevertheless, despite all limitations, I made sure to fulfill my biggest wishes (large window areas, wooden doors from the carpenter, my dream wooden staircase, blinds on the ground floor, etc.). So I built for €250,000 (40 minutes from Munich, between Munich and Augsburg, so not a cheap area). It will take a while until the driveway is paved, pictures hang everywhere and everything is decorated down to the last detail, but otherwise I am living in my dream house. If I had a bigger budget, I would also have real wood parquet, wood-aluminum windows and a steam oven in the kitchen, but it was important to me that I could finance everything well. Therefore, I am completely satisfied. I think it depends on what is important to you. So just be brave and good luck!