I also refinish hardwoods and put a couple coats of poly on them too if the house has floors that are in good shape.

I've had my guys sand the floors and refinish them.  

When I originally did my budget, I didn't include refinishing the floors but after months of construction they're looking pretty rough.

I would charge the customer for refinishing.

Stainless steel appliances, granite countertops, refinished hardwoods etc....We've been renting it to a group of three 20 somethings for $1,500 the last 2 or 3 years.

After vinegar, baking soda, and peroxide before refinishing the hardwoods the smell seemed to all but disappear.

Its a 3 bedroom, 1 3/4 bath with family room, den/office.Everything in this house was replaced except the gas hot water heater (it was only a couple years old), forced air heating system (same age as water heater) and the tub was refinished.

In the 13 years, I did not clean, paint, or do much there so it needed a bunch, ended up refinishing the hardwood floors and redoing the kitchen as well as paint every where inside and out.I have a current 12 year tenant, who will probably stay for more years, as their circumstance precludes moving.Another tenant I have has been there 30 years, though I've only owned the property a few years, they were living there a long time before I was the owner. 

It's good for the old balance sheet.Here's an example of one:2608 Blueberry Drive Augusta, GA 30906Acquisition ~$15,300 (got it super cheap as an REO because it was infested with fleas and difficult to show)Repairs ~ $20kish including roof, HVAC, water heater, refinish hardwoods, drywall/paint, new kitchen, and some misc.Rented Section 8 for $700/month (about to increase to 745 :)

The hardwoods are already there, just needing to be refinished.