I have no construction background. Just getting into wholesaling. I hear that what most wholesalers fail on is the accuracy of repair costs. Where can I get more education on what problems to look for and how much the...

@Jamarr Lee  Fresh comps will be more accurate than the county assessment, if that is what you mean when referring to the public record of appraisal.Public tax records of a property is not an accurate value. 

I find good fixer uppers all the time, and want to be able to accurately estimate repair costs, so this way I can put together awesome wholesale packets for my investors.

Is that accurate in your experience?

You need to be able to run comps, accurately calculate rehab costs, understand the difference between fix and flip rehab costs and rental rehab costs.

It also provides basic pricing ranges and discusses the different factors that influence pricing.Next, I would compile a list of these common repairs into a spreadsheet to help you get organizedOnce you've got your spreadsheet compiled make some trips to Home Depot or Lowes to get a feel for how much materials costs for flooring, tubs, toilets, lighting, etc.As Jim suggested there are good resources for Labor costs such as RS Means, but the best and most accurate source for labor costs is to contact local contractors. 

Subtracted from the profit to show a more accurate profit? 

They will have far more accurate and helpful information than most of the people here:http://webcms.pima.gov/government/development_services/land_planning_and_regulation/Hope this helps.

Is that accurate? 

I still have North Tulsa rentals and I re-read my post up above and it still feels accurate.