While benefiting from a great location and solid bones, and a good rental history, there is no denying that the dearth of inventory and the general frothiness of the real estate market must have played a role. 

I would have a contractor walk around the property though to make sure that the bones are good and you don't have any unexpected expenses.

An investor in your area that does new construction should give you some ideas. i would also Google it.

You're never too young to start :) my first deal was at 18, New construction flip of a quadraplex.

I'm in San Jose working with a youth corps programs that is starting to do Tiny Home construction and we are reviewing all the regs etc for California -- the hope/goal is to make quality homes to service our homeless population then the community then eventually FEMA etc...These will be on trailers - Our approach will be to approach members in the community who would like to have the extra rental income by having on elf these on their property -- no doubt there's a lot of hurdles ahead of us but we have a record of building/construction - the challenge will be the market and regulations  which I guess always is the case....

However, lenders construct second mortgages as either home equity lines-of-credit (HELOCs) or shorter term, higher interest rate, full disbursement mortgages for homes.When selling a home, a second mortgage, regardless of the homeowner's use of the funds, reduces the seller's cash received at the closing of the sale.

That will tell you what type of construction the specific industrial zoning will allow.

I‘m Open to all constructive criticism and advice as this is my first property.

The listing says pier and beam construction, not slab. 

Personal friend is wanting to come stay in our area and learn a little construction.