You can learn from what he does for you and next time maybe DIY.

@Anthony Abruzzo while it is possible to remotely DIY manage, VERY difficult to do with zero experience.

I know someone who installs security systems.

After a thorough review of systems, we had plumbers troubleshoot and repair/replace a couple of small chronic bathroom leak issues, and electricians installed a number of end-runs back to the panels so that rooms could each have window A/Cs running without tripping circuits and other such issue.

I’ve found that as long as they’re somewhat insulated and well installed the color won’t matter.

It might help you out if you're a hammer swinger type guy who can produce workmen like quality results versus homeowner DIY results.Someone who has been in this business for awhile , and brings a lot more knowledge , and contacts to the deal we'll have a lot better chance at performing a turn around on the property then to someone who is new and inexperienced. 

I tried to estimate what a GC might cost in my calculations, but I have an uncle who does roofing and cousins with window installation and landscaping businesses, so I believe I can save some significant costs through their help and guidance. 

In a lot of cases, there was a drainage system installed but it was not properly maintained and therefore doesn't work. 

There were a few other things I believe which are destroyed including carpet which was newly installed a week before she moved in, but b/c it is 7 years, I can't do anything about it from what I read on this forum and other people asking these questions. 

Since then, he has had to replace the windows (the seals got old) and now he has to install all new plumbing.