These people are built to value add deals, you would have to look hard for these people in your market and probably pay them top end pricing to get your properties performing amazingly well!  

You haven't provided us with any information that would help us help you.My recommendation: do not sell a property unless you have a plan to invest it in another property that will perform better, or if selling will move you closer to your goals.If you don't have a firm plan, hold onto it until you do.

What is the experience of the group at performing this sort of development?  

You have to properly vet and perform thorough due diligence (which I didn't do a couple years ago when I first jumped in).

It is therefore extremely important for you to know how to properly evaluate and choose a SAFE 1031 Exchange Qualified Intermediary for your 1031 Exchange transaction.You should always perform a careful and thorough due diligence review before making your final selection.

I'm wondering which company buys performing loans and what hurdles I might face?

my RE income from my rentals is semi-passive of course... so less active than W2 but more active than dividends or social security.I just dont really see owning rentals as passive to me its active if your going to stay right on top of them and have them perform like you want them to ( this is specfic to owning C class low B class sFRs  Not those who might own 100 unit apartments with professional management those are passive as long as they are working good. . 

Much of my career was focused on REO properties, during which I ran a parallel small business that handled property inspections and performed BPOs for banks.

And yes, I know people will say "get her in contract if she wants the house and perform repairs" that would be the best scenario except At that point I was completely out of money.

I spend a total of 5 days a month performing maintenance related duties(replace flooring, windows, plumbing issues, ect.).