I completed the trio of 1x1 live/work units. It ended up being only two different units-a 2 bedroom and a 1 bedroom loft. I used the combination of them to create a small street of live/work units.
Here they are: The Old Mill Live/Work Units (named after the image they're based on)
These are the original units, I made them as if they were the middle units. I figured that it's easier to delete the extra hanging wall than to add it. They would make decent apartments as well, but I didn't see the purpose since they're only a single living space. However if you wanted your sim to live above a small store or shop and not have to run the store or shop OFB style, then you could easily add the store there and change the door into an apartment style door.
The work part of the live/work unit. A small washroom and open area ready to be transformed into whatever your heart desires. The seperate entrance for the unit is also on the ground floor.
Living space with plenty of space
Two bedroom unit
One bedroom loft unit
View of the units in my hood
Some interior views of the units
Download one bedroom loft or the two bedroom unit