Also note that the cost of commercial grade washers / dryers is much higher then residential grade.One more thought, are your tenants asking for this or are you trying to use it as a differentiator.

I don't know if and when this one has been up graded so some of this stuff might have been improved.

I can get a house cleared in the $5-10k range, higher being for a slab on grade brick, lesser being a raised house with wood or vinyl siding.I would look at new construction costs and add a bit for the demo.  

As of lately I feel more and more people are trying to give property and neighborhoods a grade just like you were grading a high school paper and you received a C+ or B-, heck even an A!!!!   

Stainless fasteners must be used below grade.

Only above grade levels get included as living area by appraisers.

There is a negative slope grading issue that allows water to flow towards the basement.

Then they get all butthurt because I wont' grease their hands, and try to find ways to backdoor me with someone in the building above my pay grade to try to force their way into my portfolio.

In my opinion, MLS listed multi-family in good neighborhoods in Sacramento are not investment grade property.

I found that there is no p-trap, either in the wall or below grade in the crawl space.