Companies that charge percentages in my area typically do not charge leasing fees due to their higher monthly fees. 

I offer to fund a flip of there house, they would get the number they were seeking for their house plus a percentage of whatever the profits are after all expenses, holding costs, realtor fees etc..have been paid.

And second what is a good percentage or share to give him since he will be the one there managing the actual flipping?

I think the impact would come from the loans that were previously modified at ridiculously low 2-3 percentage interest.It's hard to compare apples-to-apples without knowing which kind of notes the fund you're referring to is investing in (or creating)

I did add a high maintenance percentage to cover any direct damage.As part of the town rules there needs to be an onsite property manager.  

The reality is, investing in private investment opportunities is how a large percentage of the rich get rich and stay rich.

Thanks @Verle BaileyThe house was $130k needs $35k-$40k in work and should comp out for $220k-$250k.I do have some other GC's that would do the work, but my hope is to build a partnership out of this.Not sure what percentage a GC normally gets.

As mentioned above by a few people, the owner occupancy percentage makes it conforming or not conforming(meaning, it satisfies Fannie/Freddie guidelines).  

Meaning if it appraises at 575k then a conventional loan will use that as the value it bases the loan off any sale price higher than that would require the buyer to bring cash to the table on top of what ever percentage is required based on the loan type.  

Both provide good service as custodians and have flat fee-per-service models, rather than a percentage of account value, which makes much more sense for what you are doing.