If it is then spend the time getting the RIGHT education, building capital reserves, making contacts, and arranging financing options.  

you have to look at your building code and talk to GCs who have done it.

My goal is accumulate properties while I’m still living at home, to eventually be able to fund building my own house with the cash flow from the properties.

Beyond that, most self storage only being 8 1/2 foot tall or so wide, a 10 x 30 or 10 x 40 storage unit can't handle RV's and boats.Recreation areas/cheaper land:  The way you beat your competition is to build closer to the Recreation areas or on routes to them, from the populations.

Derek,Just pay a realtor to run the comps for you and build a relationship with the realtor and show the realtor you will use the them to close the deals and then the realtor will know you are for real and then the realtor will be happy to run comps for free.Joe Gore

I'm looking at infill lots in south miami dade county in areas like florida city, homestead, etc for joint venture projects with investors to build single family homes and small multifamily homes. 

Moreover, neither party seems very interested in my goal to build my RE portfolio. 

Go to BUILD YOUR TEAM at the top of your screen, and you can search for other MEMBERS or LOCAL MEETUPS.

My concern is the HOA and state of the building. 

Total build costs of 600k )this includes lot, soft/hard costs, and 60k overhead recovery to my construction companyAmortize @ 20 years, all expenses equal gross rents so break even cash flow.