There are a few options for platforms that an agent should be able to market your property to get it in front of the right type of buyers who are looking for assumable loans.

House hacking is probably your best option.

The agent turned down a seller financing option - although it was not ran by the seller - because the agent said the seller is so done with the property that she wants nothing to do with it at all.

This is typically HIGHER than option one. 

If they Counter, you have the same 3 options to respond. 

I've been at this a while and have over 70% equity in my combined portfolio, and I'm over 50 years of age, so I don't look at creative financing options. 

Hard money lender/DSCR - both are good options.

OC California is very expensive so investing out of state can be a good option.

They should have the option to install a security alarm at their own expense.

I can get prime-0.51% on a HELOC but I don't love the risk to my monthly payments if rates rise - that is why I like the fixed second mortgage option.