Also greet the church that meets in their house. Greet my beloved Epaenetus, who is the first convert to Christ from [the west coast province of] Asia
Actually the English word
has interesting meanings.
And this would not exclude larger facilities for a unified John 17 vision for evangelism and/or teaching. But for the Early Church the deep spiritual work of the Holy Spirit was done in the homes of those who allowed their home to be open on some night of the week for a safe place to grow in Christ Jesus.
The House Churches
listed in the New Testament are as follows.
There are no building funds mentioned in the New Testament and no buildings known as the church. All of the offerings and gifts went for supporting evangelism or helping the poor.