After meandering through the home, I think it’s pretty obvious that this building used to be a church that was (poorly) converted into a warehouse and mail order business. The bathrooms with multiple toilets, a very large kitchen with a sliding divider, and the bath that is a poorly disguised baptismal font kind of give it all away.
Most likely the pastor and his family lived in the ‘home-like’ area at the front, with the back building being the main church proper, along with the large parking lot in back for parking on Sundays.
Probably the guy who bought it got it for really cheap when the church went bankrupt (happens a lot), but did a haphazard and half-assed job trying to convert it for his crappy online order business. Also probably a combination of hoarder, complete inability to clean and throw away things, and toxoplasma infection to boot. The place is almost certainly full of rats and other vermin.
Personally I’d want a full gas mask with filters before I walked in the place, I’d be afraid of a hantavirus infection.
