Get one tenant out, renovate that unit and see if one of the tenants wants to move in to the upgraded unit at a new price.

If you want to reuse your VA loan in the same area, it has to be a "substantial upgrade".

You can get up to $35,000 for renovations/upgrades/improvements.   

I upgraded the whole house which was 70s house.retiled entire houseupgraded all 3 bathroomsupgraded the entire kitchenredid the pool, patio What was the outcome?

I'm looking to upgrade to a flooring option that will look nice, hold up over time, be easy to repair, and not break the bank.

Three places I look to upgrade flooring, kitchen, and bath.  

Over the corse of 4 years, values increased and also completed some cosmetic upgrades.

We upgraded the kitchen cabinets, sodded the yard, added a sprinkler system on the well and raised the rent by $200, from then on the renters were quality renters that paid and we were able to steadily increase the rental income.

We installed a new kitchen (fixtures, appliances, some plumbing upgrades), new baths (wall/floor tile, vanity, fixtures) and paint/minor carpentry.

Additionally, you have to run the refrigerant lines to each indoor unit and allow for a place to drain the condensate.Electrical service: If you only have 50-amp service, for example, you'll need to upgrade.