Ourcurrent approach involves identifying possible contact information for thelisted owners and calling multiple numbers, but this process is time-consumingand yields limited results.

I'm in Steubenville, Ohio a small town with limited resources.

From my understandingYou can build an ADU of max 1200 and then convert current space in your main house as JADUFew things that has not been clarifiedDoes the 1200 Adu space limited to total space between ADU and JADu?

The government of Costa Rica has a policy to limit development and doesn't invest much in infrastructure to bring tourism.

Actually the IRS does not tell us what we can invest in, only what is disallowed (life insurance contracts and collectibles).Allowable investments for SDIRA investing include the following:Residential real estate, including: apartments, single family homes, and duplexesCommercial real estate Undeveloped or raw landREITs (Real Estate Investment Trusts)Real estate notes (mortgages and deeds of trusts)Promissory notes Private limited partnerships, limited liability companies, and C corporationsTax lien certificatesOil and gas investmentsPrivate stock offerings, private placementsJudgments/structured settlementsGold bullion Factoring investments

Base the amount of podcast I watched, I know it's very possible but with limited finance, it seems out of my reach.

The influx of tech jobs, manufacturing, mining, and Californians there is a strong population and combined with limited to no multifamily new construction we expect a severe housing shortage.

I would need to learn more about my options though as my experience is limited to podcasts and a few articles on that subject. 

In my state the standard contract used by realtors addresses this issue by allowing the agent to check a box specifically to limit the seller to keeping the EMD as opposed to going after "liquidated damages" like that.

Next, your using limited visual range photos.