Some don’t report their off-market business like FSBO sales for MLS stats as it’s not required and many don’t care about stats.

Talk to a few F&F lenders about % of ownership requirements to be the guarantor, and if there's a % of ownership which REQUIRES you to be a guarantor on the loan. you can avoid this headache by being strategic as to how the loan (and the LLC) is structured while you wait for your scores to improve again. 

Moving out of state, moving closer to work, school or moving into a bigger home due to expanding family like "pregnant" and/or requiring additional rooms or larger GLA.If you purchase a 2-4 unit and try to purchase another 2-4 unit if they are not "Common" to the area you will have a hard time.

Investors are desperate to find "deals" and buying at auction feels like a deal, even if it's not.I've been to auctions where people pay market price for a home that is clearly a fixer-upper, meaning they will be under water after renovation, even if they don't consider the cost of their own labor.

You’d require a license for both of those.

My friend has a property but I think he is unsure about the STR regulations/requirement and that's why he is not considering STR arbitrage, but would be open to MTR. 

@Theresa Harris the ruling require exclusivity to the listing agent’s listings… one just becomes a client of the agent, who you happen to meet at one of their listings.  

I also think you should be required to be licensed.

Something like that where you are paying a la cart fees that are applied at close under the buyer-broker agreement and commission agreement.Its going to be fun to figure out this year and next, I’m building basically a subscription based brokerage right now anyways where they sign up for the “plan” that suits them which will require the mandated buyer-broker agreement and commission schedule. 

Some may also require 12 month seasoning