FSSL, I believe you may be talking about the hospital building in Paxton, Illinois. Grace Baptist Church met in a corner of that building and I attended services there on one occasion. It was supposed to be used as a conference center attracting folks from around the state, but that never happened. It turned out to be the proverbial "white elephant" - the building was disposed of somehow, and Grace Baptist moved to a smaller, more practical facility on the south side of town. As far as I am concerned, you were right to vote "Nay!"
The church plant you mentioned in Chicago, was that River North Baptist Church? They were meeting in a loft in a place with very difficult parking, and as far as I can determine, that plant fizzled out pretty fast.
I have nothing against house churches - I'm all for them and if they work, great. But I question the practicality of having a church meeting in a house or place that is difficult to find or access, there is no church sign, they may violate local codes, and nobody can find out, on the Internet or anywhere else, that the church even exists.
For years I attended a house church in Normal, Illinois - we met in the basement of a home, then for a while we met in a motel conference room with no sign and no publicity, then back in a house. Nobody had any way of knowing the church was there, and after limping along for many years, that church fizzled out. Seems to me that starting a church in a house is fine, but there needs to be a plan to quickly get into a building or storefront with visible sign and parking, and there needs to be a good web site. Otherwise, they are probably not going to get anywhere. Even if there is a thriving fellowship meeting in someone's home or apartment, I'm not sure what kind of impact they have if nobody knows they are there.
I donated large sums of money to a black Baptist house church in Chicago - when I visited their services, attendance was basically just the pastor and his family, there was no church sign (the pastor told me that his garbage collection by the city would be canceled if he put up a sign) and there was no publicity or any way to know that a church was meeting there. This church eventually fizzled out and amounted to nothing. I think that any proposal for a house church needs to be analyzed to see if it is practical, and if after a reasonable period of time they are not getting anywhere, then the plug should be pulled.