Hi again and thanks for reaching back out. To be quite honest, I cannot really see the block issue well enough to know if it was done to correctly or not. Typically, block or masonry is not anchored to the structure since it is in its own right, structural. In other words, a block wall is built on a footer. Then, if the inside is "finished", metal studs or wood studs are built inside independent to the block, i.e. the bottom track or floor plate is shot or tapconned to the concrete slab. What I do see in the second picture are metal studs installed in front of a window which is questionable. The insulation work is haphazard at best obviously. Regarding the bathroom, it should be of minimum size to be able to accommodate a wheel chair since it is being leased as a commercial space and, yes, it must have an exhaust fan vented to the outside per code. Certainly running water is required. Regardless of municipality code, OSHA, a federal agency, has requirements for bathroom facilities in the work place. Here is a sample of the requirements specific to your question...
Restroom Structure Requirements
Separate facilities must be available for each sex, unless the toilet rooms themselves can be occupied by no more than one person and can be locked from the inside.
Each water closet must be a separate compartment. Each must have with a door and must be separated from the next by partitions.
Sinks for Handwashing
Hand-washing facilities must be provided. They must offer hot and cold water, or tepid water. Soap and hand towels must also be available.
I hope this additional information has helped in answering some of your concerns. Clearly there are deficiencies in the work that was done, not to mention it is clearly incomplete. Thanks again for using JA!