Housing nonprofit charter
Capitalism does a decent job of allocating limited resources based on a balance of want/need/contribution - but this is a trait of currency rather than actual capitalism. The problem with capitalism is, when a limited resource such as real estate becomes more in demand than supply, the difference in its price goes into the pocket of someone not making contributions of comparable value - which then unbalances their ability to claim further resources.
The goal of this entity is to provide housing with the same resource allocation benefits as under capitalism, but without the exploitation or profiteering.
In support of this goal, the following rules for a new financial entity are established. In order to establish an actual entity, a generous benefactor would be required to seed either the funds or the property holdings of the entity. (Perhaps as a bequeath.)