It's definitely worth investigating.Yes, you can install motion-sensor cameras to monitor vacant rentals, but they require some paid service to monitor remotely (wifi, hotspot, etc.) 

Glue-Down: Click-lock is DIY-friendly.$1.5-3 per sf.

Cost $18,000 when installed.4.

Some insurance companies are asking to see the home inspection report in order to give you insurance or to install a $750 water shutoff valve if the home is older than 20 years old.  

In regards to having a EV charger, Id seen a lot of people install the outdoor rated ones in their STR and it helps to draw the people that may be renting a EV during their trip. 

- How can I estimate expenses for installing utilities and creating roads, sidewalks, and drainage systems?

Are you installing new smoke alarms?

Lol.....Maybe I should develop a business model that installs them...for a slight additional fee. 

The forums are full of self-managing landlords who make little mistakes that turn into big mistakes that cost them years of cash flow (or more).If you want to be a DIY landlord, I recommend books, blogs, classes, or other resources to educate yourself quickly.

Additional Context:- I'm usually a DIY everything guy because I grew up doing construction and farm work.