If so, I'd suggest joining the local Real Estate Investors Association there; I am a member myself.

I would suggest researching the going rates for STRs in your location with something like Mashvisor or AirDNA.

What would you suggest?

But if I can't sell quickly, I could rent them and have multiple cash flow (because of the different income sources of the different tenants in the same unit) and wait for the market to recover and then sell the unit.Please let me know your comments and suggestions about this information.Thank you everyone!!

Borrower short on a variable rate (HELOC), borrow long with a fixed rate.I can potentially do either for you but would suggest a fixed rate either first or second mortgage. 

Thank you for that suggestion!

He suggested that we also seal the brick with a waterproof sealant like a clear Drylock just for that additional level of protection.

@Kalei White, I agree with those suggesting househacking here in San Diego.

Now, let’s say you partnered with someone on a 50/50 basis, as you suggest.  

I personally can't stand residential but that is just me.