What is your interpretation of House of Leaves?
House of Leaves by Mark Z. Danielewski is built on layers a house larger inside than outside, a blind man writing about a film he cannot see, and an editor annotating that writing while falling apart himself.
The most honest interpretation: the house represents the unknowable void inside the human mind. The darkness is not a monster it is the absence of meaning. When characters measure the house, it keeps changing. Some things resist being pinned down, and trying to understand them deepens the dread.
A second reading: it is about grief and trauma. The house expands when relationships collapse. The darkness grows when characters are most fragile. The horror is internal, not architectural.
A third reading: the entire novel is an unreliable document. Nothing can be trusted not the footnotes, the appendices, or the narrators. The question Danielewski poses is: how do you find truth in a text that actively deceives you?
The house is whatever you are most afraid to look at directly.