Much of traditional theology denies this, but the Bible reveals it. We therefore urge every believer in Christ, every regenerated child of God, to return to and affirm the revelation of the Triune God in the Word of God. In order to know the Father's house in this verse, we need to consider the previous mentioning of the Father's house in John 2. At that time the Father's house was the physical temple in Jerusalem. Now the temple of God, the Father's house, is the Body of Christ.
Abodes is the correct translation here.
The same word is used in the singular in verse 23 where the Lord said that He and the Father would make an abode with the one who loved Him. In the Father's house, the Body of Christ, there are many abodes, many dwelling places. Each member of the Body of Christ is an abode, a dwelling place, of God. God dwells in each of us who have received Him in Christ. And if I go and prepare a place for you, I am coming again and will receive you to Myself, so that where I am you also may be.