The early church ALWAYS worshiped in man made buildings. That they were someone's home is irrelevant. And the Jewish believers in Acts also met at the Temple
Also the RCC did not invent having a permanent place of worship
CHURCHES Literary evidence (
Acts 1:13–14; 2:46) shows that the earliest congregational meetings of the disciples of Jesus, for prayer, the eucharist and the agape (a love-feast held in connection with the Lord’s supper) took place in private houses. The first archaeological evidence is the community house at Dura Europos, dated to the first half of the 3rd century AD. Built as a peristyle house (Houses) with a courtyard, several rooms on three sides and a portico on the fourth, it was altered in AD 231 to serve as a meeting-place for the city’s Christian community. The reception room with benches on three sides was connected with the adjacent room, providing space for 50–60 people. In another room a baptistery was installed.
Negev, A. (1990). The Archaeological encyclopedia of the Holy Land (3rd ed.). New York: Prentice Hall Press.
Church meetings in homes was natural, just as it is when we first sent Missionaries out to other nations. The simple truth is they had to meet somewhere and it would take a long time to get the money to buy land and do construction especially in a nation that is antagonistic towards Christians...forcing them underground.
It wasn't a doctrine. It was a practice born out of necessity