Are there going to be banks involved, creative seller financing or all cash? 

Proof of funds would be a bank statement or some other document indicating the liquidity you have.

I don't think rent to retirement can vet a deal any better than anyone else or you, they just have a bit of a system. but the new builds in Lehigh acres, Cape Coral, north port, etc are all garbage. septic systems, poor economics, low rent to purchase price ratios, you are banking on appreciation and buying at market. building direct is going to give you a competitive advantage on a 3 unit let's say worth 600,000 you are going to be 120k ahead than if you bought it through them. that's my analysis. if you are super lazy and too busy to make money and have millions to throw around then I'd recommend not thinking much about investing. but you can also invest in funds and be way omre passive than buying a new build from far away. but if you want to add real value then get involved and make it happen. getting wealthy isn't easy. you work hard for your money and there are build to rent developers like us that try to answer and add value to start buiding relationshipsl

;(- if as-is value is less then the balance on the mortgage + arears OOOPS you need to have the owner work with the bank, you as the investor buyer AND a short sales expert often an agent work the tedious and usually failing short sale process. 

OTA business doesn't exist without the hosts and screwing hosts will be the last thing they would do.

Fellow STR host.

I have a bank locally that will use DOT as collateral for loans.

I also liked that they are US based as I had issues with my bank with the Finland based Hostaway.Finally, I highly recommend PriceLabs.

The bank will make you leave 25% equity in the property - but you also still want the property to at least cash flow some - so be careful how much equity you pull out / new debt you take on.I would do a cost benefit analysis of what your actual gain is in cash-flow on buying a new property with a (currently) higher interest rate (if financing), versus just holding on to the current appreciated property and enjoying that cash flow.All the best!

All interest rates and payment plans are custom made to work for both parties therefor creating a win win scenario.As far as partnering with the banks goes.