I can't speak for contractors, but as a DIYer, I know even the most basic kitchen renovation may end up costing me 10k if I were to do it myself. 2-3k for cabinets. 1k for plumbing and fixtures1k for electrical and fixtures2-3k for granite countertops1k for tiling/flooring1k for miscellaneous like painting, etc. 

New sewer, electrical, electrical panel, mini split, tankless water heater, plumbing, flooring, kitchen, bathrooms, turf, driveway, hardscape, etc.

I cannot tell you after buying a property how many things come out of the woodwork like roof repairs, electrical repairs, new hot water heater etc. 

He was considering my house a remodel even though I stated everything in the home is original and that I was only repairing damage from the foundation and making some minor updatesHe required that I get an electrical permit for 5 new lights I had an electrician run for me.

Expense your electric, water, sewer, internet, shovel, water hose, etc. 

Is this just a cosmetic rehab or are are there problems you have to fix in electrical, plumbing, utilities, etc?

Electric company put leans on the owner. 

Also for the area I reside in you don't even need a vehicle, you can walk to everything anyone could possibly think of and when I do need to go further I have my own electric scooter..

The issues seem to be Baltimore Gas and Electric takes forever to do an inspection - 3 months sometimes. 

I understand the feeling of getting the real estate "bug."