The most common is leaning on your agent for their expert advice.

I specifically want to call out one of their Senior Accounts Associate, Charlotte Cunningham, who helped me through the process on my first purchase as I needed to buy a sizable amount of furniture quickly and she was able to help me make moves quickly...and didn't make me feel bad whatsoever when I pulled back a few items at the last minute I was able to find them cheaper elsewhere.

However if I was an agent, broker, GC, etc I do not feel that it would be my responsibility to verify the underwriting.  

Feel free to DM me. 

My second house was under contract before it was even listed, but the combination of my GC disappearing and having to restart the permitting process for the carport in March right at the start of Corona lock downs dragged that out and eventually feel out of contract.

With the cost of utilities and the level of comfort people feel is mandatory now there is no way I would want to be on the hook for it. 

@Martti Eckert I live in Los Angeles and have done a handful of BRRRRs in Missouri so feel free to reach out with any lending related questions to pulling off BRRRRs in Ohio. 

I feel where you are coming from.  

You should invest where you feel you have a competitive advantage.

Feel free to reach out for more details.