(Also worth noting, because when am I not being long winded in this post. All

Your value is really determined by location here and the size of the lot.Nashville changed the building codes 2 years ago and it allowed you to take a side yard and build a house on it.  

JamesCalifornia has very spicific laws I would look at California Civil Code 1965, 1980 to 1991 those statues spell out in detail the procedure for disposing abandoned personal property.My apologies for not being clear in my first post but I went back and read this question from another site I read.  

When the inspection turned up knob and tube I wanted to make sure this was taken care of given this is a rental and the electric was not up to code.

Hey @Redgy Saint-Germain , The very first article of the Realtor Code of Ethics states that agents are to a "pledge themselves to protect and promote the interest of their client" (you).

If you don't see ANY signs out, its a good sign that your city is actively picking them up and enforcing the code. 

Are you saying I approach the appropriate town office as if I were a contractor hired to remedy any code violations the property may have?

City code enforcement had already started gunning  for these properties and now all I can afford to do cut the grass and clean up the exterior.

It's a lockbox so one would need to know the code to open it to get the key.

Specifically: Property condition - properties in poor physical condition, that have code violations, or structural/pest issues are viewed poorly by lenders.