Well this actually is reference to the Jewish bridegroom customs. After the engagement the groom to be would leave and start work on some kind of new dwelling, which might be a new house, but often it was building some kind of an extension room or flour to the existing house of his father who he was living with.
So both literally and metaphorically Jesus is doing that for his entire Church aka the body of Christ. We get more than just a room, a floor or some new "house" that in today viewpoint is only a shack. We get a full blown Villa type mansion, at least metaphorically speaking in the Life to Come.
By the Way this also has a lot to do with Him coming back in the last days "As a thief in the Night", and the saying "no man no knows the hour" (of the day of the Lord) The Jews also had surprise wedding celebration custom, where the Bridge groom came back in the middle of the night or some other time not expected to take the bride away to the wedding celebration that was planned.
Amen!
Revelation 21
Then I saw “a new heaven and a new earth,” for the first heaven and the first earth had passed away, and there was no longer any sea. 2
I saw the Holy City, the new Jerusalem, coming down out of heaven from God,
prepared as a bride beautifully dressed for her husband. 3 And I heard a loud voice from the throne saying, “Look! God’s dwelling place is now among the people, and he will dwell with them. They will be his people, and God himself will be with them and be their God. 4 ‘He will wipe every tear from their eyes. There will be no more death’ or mourning or crying or pain, for the old order of things has passed away.”
And he carried me away in the Spirit to a mountain great and high, and showed me
the Holy City, Jerusalem, coming down out of heaven from God. 11 It shone with the glory of God, and its brilliance was like that of a very precious jewel, like a jasper, clear as crystal. 12 It had a great, high wall with twelve gates, and with twelve angels at the gates. On the gates were written the names of the twelve tribes of Israel. 13 There were three gates on the east, three on the north, three on the south and three on the west. 14 The wall of
the city had twelve foundations, and on them were the names of the twelve apostles of the Lamb.
15 The angel who talked with me had a measuring rod of gold to measure
the city, its gates and its walls. 16
The city was laid out like a square, as long as it was wide. He measured
the city with the rod and found it to be 12,000 stadia in length, and as wide and high as it is long. 17 The angel measured the wall using human measurement, and it was 144 cubits thick. 18 The wall was made of jasper, and
the city of pure gold, as pure as glass. 19 The foundations of
the city walls were decorated with every kind of precious stone. The first foundation was jasper, the second sapphire, the third agate, the fourth emerald, 20 the fifth onyx, the sixth ruby, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth turquoise, the eleventh jacinth, and the twelfth amethyst. 21 The twelve gates were twelve pearls, each gate made of a single pearl. The great street of
the city was of gold, as pure as transparent glass.
22 I did not see a temple in
the city, because the Lord God Almighty and the Lamb are its temple. 23
The city does not need the sun or the moon to shine on it, for the glory of God gives it light, and the Lamb is its lamp. 24 The nations will walk by its light, and the kings of the earth will bring their splendor into it. 25 On no day will its gates ever be shut, for there will be no night there. 26 The glory and honor of the nations will be brought into it. 27 Nothing impure will ever enter it, nor will anyone who does what is shameful or deceitful, but only those whose names are written in the Lamb’s book of life.