You'll find a wide range of experts and experience levels.

Any nation wide companies you recommend or is it best to find the top notch ones locally? 

I sell STRs on the Emerald Coast, and you can get a lot of rental data from awning.com's Airbnb Estimator if that's your direction.Insurance is going to vary widely, depending on where you are looking. 

So can somebody please explain why we use the first formula (above) instead of the widely acceptable second formula?

Prices will vary widely and you need to know why that is.

Lead paint was widely used before 1978 in cities all across the US. 

Hi Kevinn,It's good that you were specific and mentioned multifamily.You need to take it a step further and talk about deal size.For example there might be many brokers for multifamily but some deal in quad's for 500k and others deal in 100 unit apartment buildings for 6 million etc.So there is a wide range there you need to narrow down further.

We do deal analysis, local economic/market updates, and cover a wide range of topics from flips & airbnb to house hacking & wholesaling.

Cap rate, short for capitalization rate, is a metric used to evaluate the performance of an investment property; and is a widely accepted metric in the real estate industry used to compare the potential returns of different properties.

If it works, its gonna be a pretty decent wide open concept building.