I am an ambitious DIYer and have upgraded every part of my personal home in some capacity. 

We do some cosmetic improvements to bring homes to our standard, typically carpet and paint, upgrade lighting etc.

I got a very good price on the building (about $25k per door), but it was a ton of work as in addition to tenant issues, there was TONS of physical distress (foundation repairs, sewer line and water line repairs, electrical upgrades, new roof, and apartment renovations needed for all units). 

What that turned into was places that should rent for $750 (for example) getting $1300 or more in rent and section 8 put their foot down and said, if you want top end rents your property better be upgraded top end.

Quote from @Devin James: Quote from @Jay Hinrichs: for us we do very little marketing we rely on MLS what we do to compete is spend an extra 10k or so per house with upgrades other builders simply wont do..

Will just have to upgrade every 3 years as Intuit closes down certain things such as the ability to connect bank and credit cards. 

If you flip your flooring upgrades and appliances will probably need to be of higher quality vs a rental.

We have minimal resources as far as money goes, but we have a relatively long list of upgrades (window treatments, hardware, light fixtures, paint, etc).

I just upgraded from the free trial to full sub of rentalhero.io to manage 7 properties with room to grow.

I get upgraded on 80%+ of my flights when I don't directly buy business/first which is a bonus of the status.I've been following the points guy for a few years now.