One should indeed consider the resale value. A friend of mine lived in a house that her parents had built, which was probably about as you imagine it, and the plot of land might roughly match in size as well. For her alone, during her studies, it was of course a dream. When she finished her studies, the house was supposed to be sold, but it was really hard to find buyers. Everyone found the house either too small or the plot of land too big. In the end, they just barely managed to sell it at the original construction cost. So better not assume that you will make a profit if you ever want or have to sell it.