I would say that it takes more diligence in vetting the "buyer".You might also shop it to a local landlord association if there is one.

For the best way to get an answer, call your local MLS (usually the local Realtor association). 

You can then have you license held with whats called a Holding Company.Where you don't have to pay association or MLS fees, but you can legally accept commissions.    

Typically, they cannot build and cash flow where the cash flowing housing stock is...I don't see new builds as a threat. 

Many new investors fail to realize All of the expenses associated with a buy and hold investment.

@J Scott re: the human resource infrastructure and other costs associated, we are fortunate to have economies of scale as the company I am partnered with manages a very large mobile home park and apartment building portfolio so we are spreading out the overhead cost more so than a starting house flipper.

Then there is the argument by contractors that the proliferation and high cost of litigation associated with and instigated by HOA's thwarts the building of affordable housing.

Broker Associate and I don't have the time to manage other agents, training, their headaches etc.  

Every Vumber has a separate voicemail box associated with its number.

If I'm not mistaken unlike some of the other "rules" this one is based on a survey of millions of units from the national apartment association.