Here is a little bit what has been said in the emails and this is what made me raise the red flag: Newly updated monthly listings for January 2019: Retire in 1 year with a $4,586.00 monthly net income, and annual passive income $55,032.00 by buying 10 houses with just $167K in cash.How much in stocks or mutual funds do you need to trigger a $50K annual income?

The 187th Fighter Wing is home to the 100th Fighter Squadron, which is one of the original Tuskegee units — the famous Red Tails.Continuing the legacy, Montgomery will be getting a coveted fleet of F-35s that will be "bedding down" with the Historic 187th Fighter Wing.

No major red flags in a quick search. 

This is a big red flag to me because obviously someone in the investing game would have trustworthy contacts to do those types of things for them they wouldn't just ask some stranger on a forum.

They have a couple buildings that look good but what red flags should I look for that the broker might not be giving a clear picture on?

Syndicators who are blindfolded or put on rosy red shades "making it work on paper" to make a quick $$

Someone who is interested but doesn't want to pay is pretty much waiving a red flag.

New red flags for me with thisOriginally posted by @Jonathan M Peters:the renter is starting a property management company  If he is starting a property management company, why is he renting? 

A very transparent process, as if during that time there is a possible red flag and they still go ahead knowingly that's on them.Now while I don't charge an application fee for my time to do the above, others with more properties might attribute a cost for their time, which I also believe is fine.

Many deals are not financable (won't appraise without red flags) which means you can't buy them unless you have cashAn observation is that the HOA and association dues are killers with regards to your cash flow.