If you have a single family home, they will already need to be on the lower end of that range, because a single family has 5 exposed surfaces, as compared to a townhome or apartment with shared walls.  

I'm very familiar with SFR, but have surface knowledge of expectations when it comes to multifamily.

Ultimately doing a timely and reasonable job of protecting tenants by clearing snow and salting the surface area is what matters most. 

I.E, clean with a strong degreaser, scuff the surfaces lightly, and use a high quality paint like Sherwin Williams Emerald line. 

I would at turn over endevour to take all carpet out and replace with hard surface flooring.. also depending on the size of the company and man power it could be hard to get instant communications.running rentals or running PM's is not a set it and forget it thing. you have to be diligently engaged

No surface was left untouched.Also made it a smart house.

If you don't care how it looks you could put it in conduit and surface mount the conduit and paint it to match the wall color.I would get someone to tackle this immediately and communicate with your tenants so they know you are working on the problem.I would make sure your heat is handled first if this is affected.Then work on any other 240VAC circuits such as dryers, stoves and hot water heaters if applicable.Then get the lights last.I would try and do this without moving tenants out.I just had a 2 story house rewired and it took a week but they worked around the one guy that was living there and he was very understanding of the situation.

On the surface, the corporate tax rate of 21% may be lower than the UDFI tax rate.

What you need to do to fix this is a surface drain around the section of the building that lower than the house and divert it away.

Take the cost of it from her security deposit.If it wasn't in the lease and you're footing the bill, then wipe down all the surfaces including the ceiling with vinegar or ammonia mixed with hot water.