Those churches are not owned by the Church. They were built by locals with their own resources. Trust me on this one ... because I have just gone through the process. Our parish purchased a former Methodist/Episcopal church that was closed and shuttered. The church had been sold to a local family on condition that it never be resold for commercial use. We used our own funds to acquire the church and our own funds to restore it. The Church gave us nothing.
Insofar as the artwork, much of it was gifted to the Church. The Church acts a a guardian. Artwork is maintained through other resources, such as Vatican Patrons.
As stated, in general I agree.
The Diocese owns those churches...In my area churches are being closed left and right.. and it is the "bishop" that closes and the Diocese that places the for sale sine and collects the money IF it sells..if not they just let it become an eye sore like a slum.. the "people who built it (as you say) have no say in that churches future or the schools building when the bishop shutters them and none of THEIR money is returned to them ...like it or not ..those buildings are part of Romes net worth
PLEASE do not cry to us about the cost of "preservation..
The church across the street was bought by a lovely group of Spanish nuns. Their order purchased it to bring more young women into their fold. It's sad to see empty churches of any denomination. In fact, the synagogue down the street closed last year and I cried!
Anyway, this is probably my favorite happy ending to a closed church: http://www.churchbrew.com