Now I haven't studied for the entire 2 years, life tends to catch up and I get pulled away for bits of time, but I always come back to the books and looking up forums and posts from people.

Would a Cost Segregation Study work well for an SFH?

Study the market.

My accountant told me there are two ways to get a cost segregation study, one being the expensive route where an engineer comes onsite and does it.

There may be an opportunity but you need to study the market.

There are studies done reporting the majority of guests would prefer to book with a management company knowing they will receive a professional service.For those who are interested in profitability and returns, not just a hobbie or supplemental rents,I think the misconception is hiring a property manager will result in less money because of the percentage charged. 

In your case, the city will require a fault trench study to determine the precise location of the fault line.

....if not, I strongly suggest studying up on that topic.I'd also definitely suggest reading up on the risks of funding a rehab with credit cards--especially  if you've never done a rehab using credit cards, and especially if you don't have the cash reserves to stay afloat if things don't go according to plan. 

So just a lot of thoughts, a lot of studying, and trying to come up with the right decision. 

Over the past couple of months, I have been studying and learning the real estate game.