In fact, if you qualify as a sole proprietor (real estate agent, broker, small business owner), you can have something called a solo 401k and use that to purchase property.

Experience Purchasing from Non-ProfitsPurchasing property from non-profit organizations often involves additional considerations compared to typical transactions:Decision-making process: Non-profits often have a board or committee that must approve property sales.

Yes, Spain is one of the countries in which banks will lend to non-residents (they generally don't) but Spanish banks are much more conservative than US banks so it's more difficult to qualify, especially if you don't earn W2 income.

If they only make $2000 and know their income has to be $3000 or higher to qualify, they can apply elsewhere and save the $30 application fee.

Also have a arcade and shuffle board in the loft area.

The only way they would seriously consider a higher offer from an unqualified buyer is if they have no offers from better qualified buyers and their back is against a wall. 

Improvements on property you own do not qualify.2.

. $50k sounds like a lot to you but with the price of materials and of qualified labor, it does not go too far.

This would probably allow me to qualify for the FHA loan if this is true since the giant loss is throwing off my DTI. 

Glad to hear that you have actually done a partnership like this, or any partnership in fact, therefore you're qualified to share your opinion unlike some of us who have not done a partnership and should not be allowed to comment.Despite investing through through the tech bubble, Argentine currency crisis, the shale boom, through the GFC, through global markets, through polar vortex's, through the oil drop in 2014 with Russia, there's no way I could qualify to come up with a legitimate and qualified response to such a partnership.