@Monica Davies as others have mentioned I always recommend people go the MFR way or 10-plex in your case because this is where true wealth is built quicker over the long run with scalability especially if you're doing a value add property where you can force some appreciation.

In my experience, showing rental properties in person is a huge resource drain and is absolutely not scalable. 

I'm looking for a way to form an entity (LLC) that is simple and scalable. 

At some point when you make that kind of money buying individual rentals is just too slow and not scalable.

I know some investors will say thats bad and one shouldn't do it, but thats just their opinion, and I'm not passing judgment on anyone who does or does not wholesale.I am really looking for a replicate-able, scalable way to do this, as it comes up VERY often on a property you would rather wholesale than keep as a rental or fix and flip. 

Note I just created another thread on lease + contract for option.This thread I'd like to discuss a "scalable" strategy for a real estate company to focus on for a way to sell properties at a no-seller concession price and make some profit during the hold period.

You may find that you make more as a contractor doing other people's jobs as opposed to your own.Lastly, unless you truly enjoy doing the work, I think most flippers quickly realize early on that doing all the work themselves is not really building a scalable business that will make you wealthy but instead just another iteration of a J.O.B. that will keep you in the rat race.Find a way to get out of the JOB so that your business works for you.

Here's the link:http://www.biggerpockets.com/renewsblog/2013/07/11/bp-podcast-real-estate-business-scalable-clothier/ The info about how to screen PM companies is around 55:00 min-1:10 min.

You have to do a lot of them to get serious cash flow.Flipping, if you know what you are doing and can do it, will grow your net worth quicker than investing long term can, but is more work and is not as scalable.  

@Steve Rozenberg  More to Steve's point (though not the original intention of @Eric Jelen 's question) is that you have to realize the long term scalability of what you are doing.