stimating operating costs for a short-term rental (STR) in a new construction can be challenging but here are some general rules of thumb and methods to help you get a ballpark figure:Research Similar Properties: Look at existing STRs in the area you're considering.

Once you connect with them, try to feel out what method they prefer.

Of the 20 rental homes I personally own, I did purchase them all using a hard money little to no money out of pocket method. 

Most paramount was - I can’t trust trust @Kris Thomas let me ask you this for clarification.. is the preferred method to tie up property and then flip the contract or double close thereby not  using any of your own money or very little and making the Delta..

Another method would be to talk to your tax person And attorneys, and let them know what you're looking for.

Don't forget to use the Enemy Method for things that AirDNA can't tell you!

Strategy is to continue to using the BRRR method, but I am doing it using my VA benefits which allow me to purchase for zero down no PMI.  

This completely changes the nature of the property rights.

I personally have 12-doors there and focused on the BRRRR method when I was building my portfolio.

I have been planning on using the B.R.R.R.R method but was wondering if maybe I should leave that alone and find a different way to get my next property.