There is another way... Does it have to be a new build? I also spent several years going back and forth, calculating and gathering a lot of information. In the end, I came to the conclusion to buy a "finished," meaning used, house and have not regretted it. Expanding and adding on etc. is always possible afterwards - if you want and need it. The house was only a few years old but still had quite a bit to do (starting with the exterior plaster), because the previous owner had not progressed due to health and financial reasons. The fact is, I paid only 50% of what a new build would have cost me. And you can definitely manage that. You just have to be patient and look at as many properties as possible. With every house you visit, you get smarter and realize what really matters. Also talk to craftsmen who know the effort involved in construction and renovation - including the costs. The location is also extremely important. With existing buildings, you usually know that the surroundings will remain as they are, which is often difficult in new development areas. The more you have seen, the clearer your idea will be of what is an option - and then "strike." That's how I did it. Better to take things calmly than to dive into a financial adventure and then have to give up everything. Always remember: life is full of surprises.. At your age, you still have plenty of time anyway. Wishing you good luck!!