Relying on so much help from family/friends/club mates goes wrong! All work done by yourself takes significantly longer than if it is done professionally. Then 1-2 weekends quickly become 3-4. And nobody does that! Even if you now believe that you can rely on your friends, I have to tell you unfortunately that you might be disappointed by not all, but some to many! Many have their own families/hobbies and probably even more acquaintances who will at some point build and need help. Then they quickly wave it off. Or the people have no time when you need them. "Sure, I can help you with the roof structure. This weekend? Oh no, that's bad, I have to help somewhere else then. The weekend after that also doesn't work, there's a bowling trip. Then my brother-in-law has a 40th birthday and is throwing a garden party. Maybe in 4 weeks. But ask me again shortly before, then I can tell you exactly." That’s often how it goes... ;) Then you have the choice, wait 4 weeks and let the construction site sit idle hoping it will work out, or you look elsewhere for help. Looking elsewhere for help is 90% associated with significantly higher costs compared to the calculated hand money for the buddy. Stay away from relying on friends and acquaintances when building a house! That won't work!!!