[Sangetsu]

Zoning is almost non-existent in Japan. In many other parts of the world, neighborhoods and cities are zoned into residential, commercial, and retail areas. In Japan this is not the practice. You can find factories, houses, restaurants, and stores all within the same block, some even sharing the same building.

Many shop owners have apartments attached to (or located behind) their shops. This is common practice even in factories. No one will see your living in a warehouse as abnormal. You might even have neighbors living in the warehouses surrounding you, so you'll likely want to keep the noise down.