I know “C” class buildings are older and charge less rent but I was thinking maybe to renovate it and put it up to date more modern.

Bigger Pockets is a great start toward getting deals done correctly and reaching out to seasoned real estate investors.

Due to this reasoning, I am drawn to flipping the older houses in these locations to meet the growing demand of younger families.

In my opinion, buy vacation rentals at the beginning of the low season, sell just before the high season.

I couldn't turn it Additional bonus nugget: In my opinion, buy vacation rentals at the beginning of the low season, sell just before the high season (probably a no brainer).

Even seasoned pros know surprises can be hidden in the walls and attics.

He then said he believed me , due to the progression in previous pictures , and the condition in the older pictures .  

I couldn't get the owner to do financing for the 6 months needed to season the loan for a refi through a portfolio lender.

If I was located in CA and hired seasonal help during tax "busy season", even if that person was in the trade or business of providing contract admin support to many CPA firms, the #2 test would preclude me from categorizing that worker as an IC in California and I would have to run payroll and pay employment taxes... 

The seasoned companies buy many properties a year so do not value the relationships as much.