And even though my wrestling career was limited to only wrestling in high school, as I was watching some of these elite athletes, I thought to myself that I can contribute much of my success in real estate, with my family, and in life in general to the sport of wrestling when I was a teenager.

All I’m simply suggesting is that although there is low hanging fruit,as with any industry or niche, there are stressors or motivating circumstances that would lead a B class neighborhood to sell me their homes (outside of the current recovery efforts due to natural causes).InheritedDivorceJob lossTax delinquency To name a fewSome stressors are more prevalent in the areas you mentioned BUT C+ , B and A are not exempt.

Hopefully, a recovery ensues and values continue marching north.  

In our case our rehabbed triplex was receiving a lower appraisal than every triplex that had sold (most of which had not been rehabbed).I tell everyone in the San Diego market that recovery of finances on BRRRR in this market is difficult not because it is hard to add the value but because it is virtually impossible to get the refinance appraisal to indicate you added the value (if you sold the appraisal would come in very near the negotiated price).Do not expect different for your next BRRRR in San Diego. 

It was still in recovery mode.

The expense is real, and also a tenant billable, so it's got to be paid from some account until and if there's a recovery for the expense from the tenant. 

So it’s certainly not a cure-all, but it does help recovery if they burn down your house.

Thus, real estate owners can benefit from both the gain deferral under section 1031 for real estate exchanges and the enhanced cost recovery deductions of the cost segregation study.

@Rebecca Shine , If you want to slow your depreciation, please look into  Alternative Depreciation System (ADS) recovery periods. 

Hire an attorney to deal with recovery of lost rent and damages.I also think you should consider hiring a property manager.