Seto's House

Seto's House is the home of Seto, Koji, and Juzo Magami. It was more than likely built by Juzo himself given that it's outer appearance is based on the Photon Power Laboratory.

Internal Structure
Despite the laboratory-like outer structure, it is a relatively normal house with a living room and bedrooms for its dwellers (although only Seto's room is seen). It is likely to have a place for Juzo to create his androids and special equipment given his nature and exploits.