AirDNA just released an article on this that I'd highly reccomend reading.

If you're looking for a real estate book, I highly recommend "Estimating Rehab Costs" by J.

If they are a high producing broker, they should be able to provide you with an abundance of insights related to that market.

Or maybe rates stay high and he starts feeling the squeeze with his investors if/when he has to refi at 6% or sell at a price I would have paid today.Back to Bjorn's point, keep reviewing and underwriting deals.  

I highly recommend starting by tuning in to the BiggerPockets podcast.

Since interest rate is now high, then IO product becomes interesting.When interest rate is above 6% ; the principal portion of the first 5-8 years is so low that it almost has no point of having principal, so IO loan product becomes (g00d)  product, BUT.....this is the but:1) if i plan to hold the house longer than 10 years hence it's better if I add principal which will reduce cashflow2) but if you plan to house longer than 15 years, and your home appreciate more than 5% yoy, just for the sake of 100 dollar cash flow, then you miss the bigger thing which is appreciation.

Another clause that I would highly recommend since you are licensed is a buyer's disclosure stating that you are a licensed agent but you are acting as a principal. 

Low vacancy rates equate to high cash flow and ROI on rental properties.Downtown areas (Clifton/OTR/Pendleton/etc.)     

I don't see how building a fourplex would be any different (at a high level), assuming you have an experienced builder lined up to do the construction. 

The price was too high, initially wanted to combine the units to make a duplex.