They're a lot cheaper and easier to maintain than a traditional home.

It depends how big your assets are and how expensive it is to maintain LLC's.

Yes you have to disclose that you are a real estate agent.All documentation regarding your rental has to be maintained in your brokerage transaction files.Whether your brokerage requires you to pay yourself on the transaction depends on what your independent contractor agreement states.

Not all companies are created equal.How a cleaner is compensated is unrelated to how well a property is maintained, nor how it is cleaned. 

But one thing has not changed - after those repairs and the house is resold, the investor doesn't have to maintain it.

The fund is the investor as far as the syndication is concerned, but the folks in the fund have the liquidity to move in and out of the fund as long as the fund overall maintains its portion in the syndicate.This was a long winded way to answer your initial question:  It does not matter how many units (whether 10 or 5000) because you can set any deal up in any way you choose.  

Just know that success doesn't happen overnight and that it is important to maintain a "growth-oriented mindset" along the way.

Your HOA will also take care of the grounds by hiring landscapers to cut the grass, maintain gardens, and trim bushes.What is the cost overlay on a property  HOA vs outside maintenance? 

Since you've already set aside the funds for retirement, learn about how to maintain the advantages with an IRA provider that allows you to invest in multi-family real estate without taking the tax hit.

In this case we maintain the property to the highest standard (clean/touch up daily) and wait.