At what point do you need a GC?

[Bienes Raices]

I'm a little unsure about when you would use a GC vs. not.

As a hypothetical example, if the house needed painting, new carpet, cleanout, and had some holes punched in the walls that needed to be repaired, would it be better just to hire individual turnkeys for these jobs?

Is a GC just for when you have a group of major things that need to be done?

On my first property, I was planning to use a GC, but I don't know whether I'll just be needlessly overpaying if I use one for a bunch of non-major improvements.

Thanks.