I have been investing my attention to the resources of real estate investing since summer 2019 when I graduated from Dartmouth College with a bachelors in electrical engineering.

Make sure your DD process includes, at a minimum:-A full property walkthrough, including every unit-Property condition assessment (PCA)-Environmental site assessment (ESA)-Roofing/Engineering/Pest/Mold inspections as needed-A Detailed scope of work based on the findings Happy to connect with you 1-1 if that would help

Social engineering is worth something too.

Then, you have three more floors at $120K a pop or so (holding costs $3400/month, 8 to 10 months construction, engineering, architect, interior designer costs, new water service/sewer at $30K) That is if you delegate everything.

My company is looking to hire a structural engineer for current and ongoing renovations + development projects.Please be local to the Greater Phoenix area.Feel free to contact me for more details.

I talked with my county briefly, and they explained that since I'm on septic and want to add another bed/bath, I would have to get a perc test to see if I can add another septic when mine fails and have a engineer draw up those plans.

What does county planning say about the time frame to start and what engineered plans are filed?

I dropped engineering my first semester and am setting my eyes on a finance degree.

You could bring in a structural engineer to see if the foundation is still usable but being that it's almost 100 years old and how far technology has come in building practices, it doesn't seem to be the best option. 30K for a new foundation is a lot better than a whole new house when the old foundation can't handle the new stresses upon it. 

@Zev Jankovic Yes, we provide Engineered cost seg studies!