Basically a total renovation.  

As others have said, YMMV depending on what it actually currently looks like and your market, but for me renovated kitchens help sell rentals that are otherwise "idiosyncratic"  walkups with very small bedrooms, slanted floors, uneven walls or sometimes all of the above.

@Steve VaughanI would 1031 into a larger property so to tax

I completed a renovation (about 30k), and went to refinance.

We feel like we can remodel and renovate the properties to bring in an additional $2,000/month(by turning one of the 1 bedrooms into a bi level three bedroom by taking advantage of the large pitched roof in each property.) 

 - One interior unit will be 12,000 BTU for a large living room/kitchen space, and a smaller 9,000 BTU for the bedroom.the total system capacity has to be able to cool both inside units at the same time so 21,000 BTU or larger for the outside unit.The beauty of these is that they can be installed DIY (provided you get your 608 certification card), as long as the line sets don't need to be shortened or lengthened, as there is no brazing/welding involved, just connect the lines and purge air, etc.my dual zone costs comes in at around 2.6k to 2.8k for my 800sqft structure.

My biggest suggestion is go for larger homes.

If it's a larger organization, feel free to inquire about their different staff qualifications.2.

These people can in turn make suggestions on renovation costs, as well as recommend GC's.

I'm rehabbing a retail flip at the same time I'm renovating a two unit rental property.