> But that doesn't solve the monthly mortgage cost. The space can be rented out to someone else to cover the cost, possibly at a profit to the remaining owners

> But that doesn't solve the monthly mortgage cost. The space can be rented out to someone else to cover the cost, possibly at a profit to the remaining owners since the renter isn't taking on any risk. The bigger risk in this arrangement is to the party that is leaving since a share of a house is illiquid.