Now, please note, this practice is highly illegal because circuit breakers and fuses are sized based the size of wires they protect.

Thank goodness it was one of those giant-sized lots so we got LOTS of practice pulling out the pipes. 

Some of the repairs/upgrades suggested by the inspector are Central A/C (Currently window units), Upgrading the electrical breaker box & an in depth electrical inspection as there are some loose wires in the attic, pest/rodent control, and to fix a fence that is falling over.Also, can anybody help me analyze this deal?

I guess we'll find out where the ceiling is naturally, as senate bill 225 (rent control) is stalled for the time being:https://www.denverpost.com/2019/04/30/rent-control...

You gave her control.  

And then you really have no control over your investment.

So doing market research on rents independent of seller details, and then I assume, add a clause in the offer about current tenant rate that survives the transaction.Do you have any practical methodology for analyzing operating expenses if the owner doesn’t disclose?

Any best practices in situations to limit my downside risk.

Is there a hard practice that prevents this from becoming highly subjective?

I've been contemplating on refinishing the hardwood floors all together (sanding & sealing), but may just resort to a vigorous cleaning and resealing - we'll see how that works out once we take control of the property.Cheers and all the best,