Electric services.

I'm a full-time active real estate investor (former engineer) in Edmonton with 32 doors, and another 24 under contract.

You think through the major systems in the house (roof, exterior or tuck pointing, hvac, plumbing, electrical, unit turns, common areas) and if they are all new you should be good for a few years (5-10). 

For example, focus on demo and structural work in month 1, plumbing and electrical in month 2, and finishing (flooring, paint, etc.) in month 3.

Lawn, snow, electric, gas, water ???

, hvac/electrical/sprinkler/ADA/etc., landscaping/signage, plumbing, google pin ownership, are there any major capex items, etc4.

A college student getting an engineering degree should consider different approaches, even if he decides to deploy some/all of the inheritance in real estate, than a high school dropout working a minimum wage job. 

Condos are starting to get condemned, which means people are having to vacate units.I'm telling you right now, I'm a JD (not a practicing attorney) in Florida whose business is being an insurance expert for carriers, working with engineers. 

One is a tech engineer, running a team.

Once we have platted lots all engineering details are done .