The PCUSA holds the deed to a church property even though an individual Congregation pays for it. I encountered this in the 90’s when I was a church elder. It is how the PCUSA maintains control of individual Congregations. Several former PCUSA congregations have bought themselves out through the years.
Presbyterianism is a system of connectedness and democracy. WE are all part of a larger entity. When the liberals took over the process of determining church dogma that broke the connectedness with the many, many small hometown conservative churches. That is why there have been over 200 congregations leave in the past year.