It was only in the last four months or so that issue started to surface.

Hi Mark, if you're pulling the carpet out I would also apply a coat of the oil base primer on the subfloor, (especially if it is plywood) in addition to the ceilings and walls, to cover any odors that have permeated that surface.

While this works and is beneficial, it barely scratches the surface.

The numbers seems to be tight and many other factors would surface as time passes.

Wash down all surfaces with TSP (walls, floors, cupboards etc.), remove all material like rugs, curtains, furniture etc. and hope for the best.

Other, buisness/investments along similar lines are golf course paractice facilities, surface parking lots, outdoor flea markets, gravel and dirt pits, christmas tree sales, and tent furniture sales.

On surface level so far it appears less than C+.What are your plans with this purchase?

A buyer is going to look at it and see only the surface but standards of practice for home inspectors nationnaly are that the inspector will take the cover off and inspect the wiring.  

It is just a quick and dirty way to assess whether the numbers on the surface will prompt you to conduct additional due diligence.Nothing more. 

It’s advised not to take a basement if yours is a creative field or else you will have to spend lots of money to illuminate the space.People spend lots of money unnecessarily on fancy ceilings, but the current trend is of no ceilings; exposed surfaces can look elegant.