I've done this in Portugal, but on a smaller scale and pretty much with only my own labor. I purchased 6 hectares (15 acres) for mid-5-figures. I've built an A-frame studio house for around €10k (excl tools), and installed a 5kw solar system for about another €10k. The house has air conditioning and underfloor heating (water-based, heated using wood from the land). I've also brought a 50-year-old tractor and started…
One question I always have when people build houses with large windows: don't you worry about someone smashing the windows and stealing stuff when you're away?
That said many stores have big glass windows and their best goods out front. But on the other hand, other stores also have security doors that enclose everything when it’s closed. I might be being too paranoid, but the same concern applies to even locking your door. A locked door only keeps the honest folks out is what they say, so should we do away with locks completely? Obviously people find some utility in them despite their inherent weaknesses.