Philemon
Although it’s not clear if it was Philemon’s home, there was a home church that Paul was writing to. A home is merely a dwelling where people can live in family relationship. In a family, the parents are the authority. In a church, the qualified elders [Titus 1] are in authority. When a church building is not available, someone’s home will do just fine. All you need is spiritually hungry and committed people, God’s Word and someone to expound upon it, and a guitar or piano to help lead the singing of praise songs … or a cappella … very sincere and unpretentious.
It’s possible that seekers will be more open to learning about the Lord in a home setting than a church building with all its unfamiliar cultural trends.