Here are the common exceptions:Relocation for Work: If your job requires you to move a significant distance from your current property (usually over 50 miles), you may qualify for a second FHA loan near your new workplace.Increase in Family Size: If your household has grown, and your current property no longer meets your family’s needs, you may qualify for a second FHA loan to purchase a larger home.Co-Borrower Separation: If you co-signed on an FHA loan and are no longer living in the property (e.g., after a divorce or separation), you may qualify for a second FHA loan for your primary residence.Non-Occupying Co-Borrower: If you were a co-signer but did not occupy the original property, you may qualify for another FHA loan as the primary borrower.Important Note: FHA guidelines typically require you to demonstrate that the current property will not meet your needs or is no longer feasible as your primary residence.2.

So as an example, if the hose sells for 90% of market value then it is doubtful you will get an added 20% on the table with your discount.

Is the house hack strategy off the table? 

My numbers on that property are good now, although it took a year for me to sort out exactly what we wanted to do with it. 700k duplex, single story, about 2,500 sq ft total building size. 1500 sq ft for the 3 bed/2 bath with pool and 1,000 sq ft 2/1 small private yard on the other. 

You'll most likely find your staffing costs to be in the neighborhood of $1,200 to $1,900 per unit per year, depending on property size, class, and market. 

•Which unit size would rent faster and have higher demand in this area?

Even though it doesnt cashflow well asap, the potential would be its proximity to Las Olas, downtown and the size of the lot, different development options. 

Most important is lot size, and basement  ceiling height.  

I ended up buying a SFH home on a nice-sized lot and I am building an ADU on the property.

Only rental cabins catch on fire and not primary residences.In all honesty, though, I would agree that something that size should be treated more as a commercial property any way and the sprinkler system makes sense to me.