The property does need a good amount of work, but 90% of that work is outside cleanup, dump runs, and new fencing to make it look great.

Have your sister check with her broker, as well as the rules with your state's real estate commission before paying anyone anything outside of a structured title company closing.As a wholesaler, who is a licensed agent, she has disclosure requirements that take priority compared to where you, as a team, were before your sister obtained her license. 

Outside of handling the RE contract paperwork, i can't think of much I've learned from agents. 

I am currently in the process of creating my own investment fund for outside partners.

Someone posted a very great mention about staying slightly under comps (as this helps keep up the good relationship with the tenant---because they feel they are getting a good deal) and it also gives you room to go up if you need to (for reasons outside of regular rental increases that sustain with inflationary demands).

I am looking to buy a 4 plex that is about 30 minutes outside Knoxville and there are no multi-unit comps that come up when a pull a title report from my title company.

The outside has definitely seen better days, Wood sidings need at least a new coat of paint, perhaps need to be replaced completely, but it can wait some years. 

Beginning to explore how to manage STRs in numerous geographies outside the U.S., curious what people's experiences have been? 

@Adrian WydmanskiLiving in the Boston area I personally opt to rent and invest in the more-affordable markets outside of the city.

rural area outside of Milwaukee.