Since you have had no vacancy for 10 years the cost is negligible to renovate.Based on the size of your unit and the upgrades you listed warranting $875 in rent I would target pushing your rent to the top of the market. 

Fist of all I will check if there are any leakages from your negligence of maintenance.

I did not issue a lease violation due to negligence.

It may be cheaper than a professional inspection and I am not a big carpet fan, so you get that out anyway (especially if near end of useful life) and get to see the sub-floor, investigate thoroughly, and treat it if necessary (bleach/water, Mildicide, etc), and explore if there is a source (leak) or not, or if it was tenant negligence....Then you could go from there and call in professional help if needed and explore who should bear the costs, if any.I agree, there is some risk of rewarding the behavior (the complaint, by giving a new floor), but you mitigate it some by making the tenant remove all items from the room and endure some inconvenience.

Yes they can sue you for damages to the property as you agreed to keep the property in good condition, not allow waste or its value to decline by your negligence. 

As a GC I can verify that is 100% true, it would be Negligent Homicide.

The last thing you want is to be sued (in my case scenario) because of negligence on the tenants part I.e.

It basically comes down to if you are negligent yore responsible regardless of what you have it in.

Jeremy, i simply don't want the liability of potentially being personally accused of 'id theft' and the likes of 'negligent enablement' thereof in today's highly litigious America where it seems like 50% americans are prescribed some sort of psychiatrics drugs and the other half on recreational ones; and the average civilian being practically a professional 'crisis actor'. frankly, and im not even kidding, 10-20 years ago it used to be that young adults wanted to be rock stars. now its practically like every one wants to be 'lawyer'?

It really is negligible but it ticked me off since I only had 2 rentals at the time.