I know that the general guidance is that emergency funds aren't to be invested, but given our financial security and the fact that we already have a personal e-fund in a safe, non-volatile location, would it still be crazy/unwise to invest this 15k in an S&P500 index fund in a brokerage? 

@Chris Seveney @Nathan Gesner The owners offered to cancel their lease and return their security deposit in full.

With the future being so uncertain I realized there was a need to do more than just rely on my job for financial security. 

Yes, very interested in investing and would love to own a few multi family properties, here in state.My immediate goal , so far, is finding investors to secure my proposed properties.What's your strategies?

Loan Security: The property will serve as collateral for the seller-financed loan.

They want to secure housing before they arrive.

I believe the code says "if a veteran holds legal title to a property secured by a VA loan but does not possess equitable title, this situation is considered 'not a disposition."

Buy your flips with soft created Paper secured by a flip you’d like to keep.  

Our lease contains a clause stating the security deposit cannot be used for the last month's rent. 3.

Separate accounts per property incurs a lot of overhead, such as minimum balances or fees for missing the minimum.I use separate accounts for each tenant's security deposits.