I''ve only heard of ones existing who work on large constructions projects, not small single family home investment properties.City inspectors will inspect as part of the permit process.

Quote from @Roger Paschal: Quote from @Quentin Hollis: I'm currently working on my first real estate deal and will be buying a property subject to the owners existing mortgage.

I purchased existing STRs that cash flow! 

The original goal, rightly or wrongly, was to maximize rentable units, so we rebuilt the main house from the foundation up into a 3 bed 2 Bath 1,600 sq foot main house, and added a 600 sq ft 1 Bed 1 Bath JADU, along with a 1,200 sq ft 3 Bed 3 Bath ADU.

The type of information needed depends on if the building is being constructed in the future or if the building already exists.

@Hunter Duplantis what @Gino Barbaro said is exactly what I was going to suggest.When you have vacancy is the time to experiment and apply your original thesis.I’m not trying to play Monday quarterback here but, you should be highly confident in where the rents should be well in advance of having a vacancy.That being said, after confirming competition rents on websites (I’d also recommend Craigslist and Facebook marketplace), you should be in alignment there.  

This week, two critical economic reports—the CPI inflation report (Tuesday, February 13) and Initial Jobless Claims (Thursday, February 15)—will provide new insights into whether the Fed will stay on its current path or begin signaling rate cuts.Real estate investors looking to finance new deals, refinance existing loans, or time their next acquisition should closely monitor how these reports shape market expectations for the Fed’s next move.Current Market ConditionsMortgage rates have remained stubbornly high due to persistent inflation and a strong labor market.

Without any cash it is unlikely unless you can find a 100% seller financed deal (they do exist, I just did one a few months ago).

And generally were i have seen them used is with free and clear prop not prop with an existing mortgage/trust deed..

You can either buy an existing property or flip a building and then rent it out.