I plan to do some data analysis on the area to better quantify this.As a wholesaler, how can I best present rehab costs to buyers?

If there's a hole, it may be a red flag.b) sensitivity analysis: I examine all the assumptions, and make sure I can live with the worst case scenarios.c) "Stall and see": if they are getting money over multiple years, and there is no penalty for investing later, I would usually wait so I get some real performance data, versus having to look at theoretical pro forma information.d) Recession stress test: I will not invest in anything, until I subject it to recession level stress and see if I can live with the result.

Just some data I crunched recently to get an idea of the seasonal price fluctuations:

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You are diluting your data.  

@Leah Bonner  Hi,  take a look at the information on City-Data.  

Have you driven around the area?

You can even export the table to Excel if you want to.Keep in mind this will be list price per sq ft, and not actual sold price/sq ft.The other thing you could do is request comparable sales data from a realtor for a specific area.

The future is data.

The problem here is that he didn't give me a reason why my data was not considered.