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Why do banks finance shared construction as mortgages instead of financing it directly and selling the apartments in a building?
Historically, Banks are mandated to take relatively safe risks with their money.  In exchange, they gain a de-facto permission to invent new money.  They have regulations about what mix of assets they are permitted to own.  Real estate speculation will be in a different category than a mortgage to someone with good credit. Second, mortgages with a secured asset are pretty safe almost all of the time.  That person might stop paying their mortgage, but it is secured; when that happens, the bank gets the secured asset (the right-to-apartment or house or what have you). In a sense, the bank loses only if both the person paying the mortgage is less creditworthy than they look, and the secured asset cannot recoup their losses. In comparison, the person paying the mortgage loses if the secured asset cannot recoup their losses. The bank is buffered from risk two fold.  What more, the bank uses the customer to determine what to invest in. Deciding what to do with money is expensive and hard.  By both having a customer willing to put their good credit on the line and doing due diligence on the apartment, the Bank in effect uses you as a consultant who decides this may be a solid investment.  Much of the risk of failure is on you, so you have lots of incentive to make a good choice. If the Bank was instead deciding which apartment where worth buying, who would decide?  A bank employee, whose bonus this year depends on finding a "great apartment to invest in?", but the consequence of a bad choice doesn't show up for many years?  The people selling the bank the apartments? Such a business can exist.  There are real estate companies that take money, and invest it in real estate.  Often the borrow money from Banks secured against their existing real estate and use it to build more real estate.  (Notice the bit about it being secured against existing real estate; things go south, Bank gets stuff). The Bank's indirect investment in that apartment in the current system is covered by appraisals, the seller, the mortgage holder, and the system deciding that the mortgage holder is creditworthy. Banks sell risk.  They lend you money, you go off and do something risky with it, and they get a the low-risk return on investment of your loan.  Multiple such low-risk investments provides them with a relatively dependable stream of money, which they give out to their bondholders, deposit account customers, shareholders or what have you. When you take a mortgage out for that, you are buying risk from the bank.  You are more exposed to the failure of the investment than they are.  They get less return if things go really well.