Housemon

Housemon is literally a giant house, and is a minion of the Dark Master Puppetmon. In the original anime, it is not a Digimon but rather a "toy" that Puppetmon made himself.

Digimon Adventure (anime)
When Puppetmon loses his hammer and is forced into a corner, he transforms his house into a massive humanoid construct to cover his escape. It proved to be a difficult opponent against the DigiDestined, despite being attacked by WarGreymon, Garudamon, Angewomon, Angemon, and MegaKabuterimon. After Puppetmon is defeated by MetalGarurumon and Matt, his construct falls apart as well.

Digimon Adventure (manga)
In the TOKYOPOP adaptation of the anime series, Puppetmon's mansion is a Digimon called Housemon. Housemon proves to be a powerful adversary, driving the DigiDestined back. Puppetmon had used it to attack the DigiDestined when he had lost his hammer. It is destroyed when Puppetmon is defeated by MetalGarurumon. The other DigiDestined realize that Puppetmon was defeated after his section of Spiral Mountain disappears.