You can't compare that, as it depends on the ground. Without additional land costs, we had budgeted 40,000€, but it has ended up being 45,000€ because our ground isn't that great. We were still lucky, it could have been 10-15K€ more if things had gone badly. Additionally, we have a hillside location, which is always a bit more expensive.
Outdoor areas can cost anywhere from 5K to infinity. An acquaintance has just built on 1700m² and is budgeting 100K€ for the outdoor areas!