But any plumbing or electrical I don’t know what’s code 

The roof, HVAC, plumbing and electrical are done. 

We both have some home repair skills, but would likely need to hire out larger work such as electrical, plumbing, roofing, siding, etc.Thanks for the help!

I would need to add plumbing for the kitchenette sink and electrical for appliances but I'm not sure if my breaker has enough room for another 240v for the stove. 

New plumbing, electrical, well, - shouldn't have any cap x expenses for a while!

Infact, it's advertised online with the Realtor.com site showing all the amenities of my apartment, the electrical, the plumbing, the windows, the door, the shower and toilet and even the kitchen sink so obviously it must be legal because I can't see an agent of his caliper risking his career and livelyhood for undisclosed info.

For example, an experienced plumber may suggest putting hammer arrestors on a plumbing system, to help alleviate potential water hammer problems (knocking noise) and prolong the life of components/fixtures/appliances, but the local building code may not require them.It would also depend on what you are doing the work for and how the deal #'s pencil out.

I also layout that as a landlord, I am responsible for major repairs, including HVAC, mechanical, and plumbing.

For a more complicated job like floor warping and plumbing he would have gotten bids on.

So I basically would want a person who looks at the whole house and gives me the appraisal cost, the areas that need fixing (ex. kitchen cabinets, tiles, bathrooms, plumbing, electricity, etc.), and how much the cost would be.Then this way, I could decide to proceed or not based on the assessment.