A "house" is essentially a container -- for a person, a family, several families or even a large group with shared interests (think of the term "houses of worship.") In the Bible, a "house" is also a container, but for spiritual things rather than natural things. In various uses a "house" can represent part of the mind, the whole mind, a whole person or even a church. The other nuance to the word "house" is that it is generally used in regards to our affections and desires rather than our thoughts and principles. This makes sense; we tend to engage our thoughts and rationality when we are out in the world doing our work, but when we are inside our houses we are driven most by love for our families and the desire to be good to those we love. So "house" tends to represent the things we want and care about -- which are ultimately the things that define us.

In Exodus 21:10, this signifies materially-oriented knoweldge which supports man's external life. (Arcana Coelestia 9003)

In Exodus 40:14, this signifies the appearances of truth investing divine good in the heavens and the truths of that good. (Arcana Coelestia 4677, 9946)

In Ezekiel 16:10, this signifies to instruct in truths. (Apocalypse Explained 240[4])

In Matthew 6:30 and Luke 12:28, this signifies the progress of divine providence in man's reformation and regeneration. (Divine Providence 332[2])