We mostly think of our individual bodies as being the temple of the Holy Ghost. But when I read the following verses, it seems to me that we are collectively the temple of the Holy Ghost.
If a family wanted to be a "house church" by themselves, I mean just Husband, Wife, and Children, is it possible for them to be: "the building fitly framed together groweth unto an holy temple in the Lord: In whom ye also are builded together for an habitation of God through the Spirit."
It seems that we would have to include all who are filled with the Spirit as part of the household of God. It seems that denominations are against the spirit of this passage.
Of course there is the part about being built on the foundation of the Apostles. I suppose that could be used to exclude others who are Spirit filled but aren't build on the same doctrinal position as we believe the Apostles taught.
Ephesians 2
13But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
14For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;
15Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
16And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby:
17And came and preached peace to you which were afar off, and to them that were nigh.
18For through him we both have access by one Spirit unto the Father.
19Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God;
20And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone;
21In whom all the building fitly framed together groweth unto an holy temple in the Lord:
22In whom ye also are builded together for an habitation of God through the Spirit.