@Allison Hodges, I don't have a ton of experience with this but have been through the process of installing LVP on floors that aren't flat/level. 

Should I avoid places where appreciation is flat or close to zero?

They charge a flat fee and have a 100% rent collection rate during COVID.

I have an out-of-state landowner who is wanting to sell a large parcel and has asked me to help market the property for them (put sign up, handle phone screens, show people the land) instead of listing it with an agent.

So, tenants would have a $110 (for example) flat utility fee collected alongside rent each month, which covers their share of the averaged-out utility costs.

The costs in TurboTenant are the background checks a new tenant would have during the screening process, which the prospective tenant pays for as well as a small charge to have Digital signatures on documents that I store online (it's $9 and also charged to the tenant).Beyond that, I use google docs (mostly sheets) for my underwriting/review process.The only item I pay for is Quicken, which has a yearly fee now.  

This being said you can still screen the tenant like you normally do a market rent tenant, and you should.

How much can I get involved in screening/selection of the tenant?

My wife and I wanted to get into real estate investing and were living in San Diego, CA where buying a SFR would make us house-poor as properties with an ADU (accessory dwelling unit/granny flat) were incredibly difficult to find and expensive.Therefore we researched other out-of-state markets and decided to visit Colorado Springs, CO.

Go to NETWORK at the top of the screen.