They have an investment grade. 

When I was in 9th grade I took a career test to see what I wanted to do when I grew up.

IMO 5k is way to much for cabinets in a low end rental and I fix my places up to a grade or 2 above the neighborhood. 

I rented a Airbnb in the catskills and it was a bummer.. beds terrible well quite working.. just not my cup of tea.I get it though for like a ski vacation or if its a high end condo that I would get.. and since I am a business traveler I get enough points each year to take two spectacular over seas vacations on my points.. up graded to suits each stay is probably worth 10k plus and its all free.. so that to me is a major benefit. 

With 13 lots I would probably start with a survey, site plan, and grading plan.

Thanks in advance.Kevin take a look at The Ultimate Guide to Grading Birmingham Alabama Neighborhoods it should be exactly what you're looking for.

(I actually bought a commercial grade ozone generator to deal with mold - and all sorts of odors!) 

What is the cost in your area for a "Home Depot" grade renovation?

Up graded windows, siding, complete rehab of 1st floor 2 bedroom apt.

Real estate involves, at best, sixth grade math: addition, subtraction, and sometimes long division.