How does cohousing provide for residents of different economic means?

In some states, counties or municipalities, housing developers of multi-family housing are required by law to have a certain percentage of the new units meet a standard for “affordability.” People in cohousing usually welcome this, and as a matter of fact often wish they could make even more than the required percentage affordable. Unfortunately, unless the developer can get public or private subsidies or grants, there is a limit to how many affordable units can be built without driving everyone else’s costs sky high.