If you cannot estimate repairs accurately you will want to pay a contractor to look at the property and give you an estimate.

That way you can have a bit more accurate of a rule of thumb to help screen deals that will require a deeper analysis. 

I'm sure Dan would agree - way more important than which market you invest in is understanding which metrics to use, what they mean, and accurately modeling them.  

Accurate books and balance sheet. 

If your numbers are accurate, this will work very well as a BRRRR.

I'd prefer to know the information/setup I'm doing upfront is accurate, but not sure if this is overkill.

Is this statement accurate?

@Alan Grobmeier, they appear to be permitted, the public records indicate ' 3 dwelling units' on a 3-4 unit zoned loti also happened to find another almost identical property that has the same configuration, just 4 individual houses, public records also only show the 'primary residential structure' with its respective sqft, not all four, BUT the MLS data on that one accounts for the total sqft, and prices it more accurately.. so lets make this a hypothetical question -IF it is permitted, would that not be worth more?

You can also follow the sites below that will typically have decently accurate info. hudhomestore.comhomepath.comhomesteps.comhudsonandmarshall.comhubzu.comauction.comGood Luck, Hope This Helps!

Its Hard to answer your Question accurately @Avtandil G.