There is no active electric and where the breakers were taken out of the breaker box.

Each of the 5 warehouses on this campus will require updates (construction of offices/bathrooms, roof repairs, paint, siding repairs, new penetrations for doors, updates to electrical, insulation, and extension of water and sewer). 

The vast majority of electric dryers run on 220v.

Whether that is most contractors, hiring an engineer, or getting self-educated.

The property does have heated radiators through out each unit. everything is separated for each unit electricity, gas, and window units in each property.

Then I would speak with a land surveyor or civil engineer to get a sense of what it would take to obtain all the entitlements and bring in the utilities, etc.     

Next time I'll start with the engineer.  

The problem is the foundation is sinking, the outdated polybutylene pipe is leaking in the crawl space and the electrical is outdated.

Engineered cost segregation studies is an area in which many people have a lot of questions about.

No, DIY is not the same as a virtual site visit or a study done by engineers @Dana YobstAs @V.G Jason said, you could very likely cost yourself more in time and money.