The Church Gathered in Houses:
Romans 16:5 Likewise greet the church that is in their house. Salute my wellbeloved Epaenetus, who is the firstfruits of Achaia unto Christ.
1 Corinthians 16:19 The churches of Asia salute you. Aquila and Priscilla salute you much in the Lord, with the church that is in their house.
Colossians 4:15 Salute the brethren which are in Laodicea, and Nymphas, and the church which is in his house.
Philemon 1:2 And to our beloved Apphia, and Archippus our fellowsoldier, and to the church in thy house:
Jesus Preached To Crowds Assembled In Houses
Mark 2:1-2 And again he entered into Capernaum, after some days; and it was noised that he was in the house. And straightway many were gathered together, insomuch that there was no room to receive them, no, not so much as about the door: and he preached the word unto them.
Pentecost Came To a Church in a House
Acts 2:1-2 And when the day of Pentecost was fully come, they were all with one accord in one place. And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
Paul had his own hired (rented) House
Acts 28:30-31 And Paul dwelt two whole years in his own hired house, and received all that came in unto him, Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.