So, as an update, being that my current unit is so small, everyone I talked to was confident that a new baby would qualify me for a larger home with FHA, duplex or not. However, after talking about this issue more with my wife, we've decided that a better alternative for us might be something more conventional.
Rather than shopping for another duplex, we're instead going to look at a more permanent single-family home that we can build equity into. Sure, we might have to put up more money if it doesn't qualify for FHA, but we might also be able to acquire something with much greater upward potential.
The general idea is to buy a large home with 2 or 3 bedrooms, convert that to a 3 or 4 bedroom property and use that increased value down the road to help up get the 3rd property. It's basically the BRRRR strategy, without the renting part.. which leads to me to another question actually.. is that possible?
I'm not exactly sure how refinancing or the appraisal process works. For example, say I find a 3 bedropm home for 80,000 and I add a bedroom. How do I know how much value was gained? I assume an appraiser would tell me that. Does that automatically add equity, or do I need to refinance? Again, I assume that I do.. maybe I'm wrong, but if I'm not, how does that process work? What do I need to know or be ready for if I want to refinance a home I've done work on that I plan to stay in long term??
Also, thanks for all your help so far guys! If I need to move this to a different section or create a separate post, just let me know!!