You'll have to ensure that the contribution is protected through a recorded instrument or lien against the property.   

Focus on collateral first LTV, property condition, market rent, then the payor’s story and payment history; price yield to risk and prefer clear remedies with a recorded security instrument and servicer in place.

(I should add that I understand the stock market and other financial instruments quite well from a decade of investing there, yet we are 90% in real estate today) Financial advisors do not understand real estate, nor do they want to talk about it, because there is no commission in it for them.

Six days of controlled drying (dehumidifiers + airflow) brought readings down below 15%, preventing mold.A few quick lessons from the field:Act within 24–48 hours after a leak or flood.Use moisture meters or hygrometers—don’t rely on sight or touch.Track readings until materials reach normal levels (around 8–15% MC for wood).Keep gutters clear and sump pumps tested before storm season.Anyone else tracking drying data or using instruments after storms?

The short term investment instruments are always have the highest return, but they are the riskiest as well. 

Can the owner in this case, deed equitable interest or some other legal instrument to allow myself to actually not only make repairs on the property but only pay the owner after the house is repaired and the house is actually sold?

Two of the notes have already matured and I did not receive the balloon payment as the security instrument dictated.

Unless you have a collateral assignment of leases and rents or a similar clause in the CFD or similar legal instrument, you might be opening a can of worms by signing a lease and taking lease payments from the new tenant.

It is unfortunate that it is in a senior living community and that you cannot owner coups it.  

How was your investment protected- what instrument did you use?