I think the 15% rule is a pretty good starting point for the $ end of things, and there are occasionally MLS deals here that will pencil out.  

The average for active full time agents is higher because many licensees only do an occasional deal (part time agents, partially retired agents, property managers who hold their license just to manage, investors who use their license just for their own deals, etc.).

Occasionally I will see properties at 1%. 

I am a fan of checking in occasionally to make sure the cleaner is on top of things and to do a walk through to check safety things like deck boards and steps, railings etc.

While I occasionally have a tenant complain about being in the downstairs units, it is rare. 

Occasionally this presents investors with an opportunity to avoid a formal mortgage qualification process and obtain their mortgage privately from the seller(s) directly.

Only occasionally is there a REALTOR involved.The people who suck at numbers and are  “parasites” actually don’t close deals and eventually get ignored by most.

(And if you think they'll update the language, I have a bridge to sell you...)Next, it has triggered occasionally and we send out a reminder that we are a smoke-free property which usually works.

Occasionally I will ask a contractor before I get a property under contract for a rough estimate on certain things if I am just not sure what it would cost, but I usually send along a video walkthrough or pictures.

And I think that type of situation, or the occasional in-law suite, are the most you're likely to find.