They're not connected to the electricity grid and don't have air conditioning or amenities.

@Ryan LudwickStart your real estate investment journey by leveraging engineering skills to analyze markets, spot trends, and build a team.

For instance, one property seems to have an extra bathroom that is not listed in the county records.I plan to make some modifications, including removing a closet wall to expand a bathroom and taking out a kitchen island that contains electrical outlets and a switch.

Quote from @Brent Thomas:@Adam Reilly I would assume you are civil engineer based on this last response.

Make sure your plans are engineered from someone reputable (don't trust the builder's guy unless you can verify their trustworthiness). 

I don't remember their names but people from the War College helped us redo the electrical and plumbing for cost which was amazing.

I would probably find another engineer.

The system must be large enough to meet the building's annual electricity usage. 

Some of that has to do with things like electrical service being available in needed amounts for the types of structures that will be there.

Our engineering team finishes in roughly 2-3 weeks with no major modifications required to our initial architectural plan.