At that time, only the samurai residences of affluent persons could have home baths, and basically it was prohibited to have a home bath from the viewpoint of disaster prevention in Edo, where fires often occurred.
また、当時は内風呂を持てるのは大身の武家屋敷に限られ、火事の多かった江戸の防災の点から内風呂は基本的に禁止されていた。