And while nothing is foolproof the most consistent method of finding good vendors is relying on OTHER real estate investors that have worked with those vendors.

Wanted to chime in as I have jumped into numerous courses & attended seminars as well. 

Also, it often helps to connect with a local agent/do extensive due diligence on renovated/new construction properties to see what the property may sell for or appraise for (if doing BRRRR method) as that can impact the price you should pay.

I wasn’t trying to be long winded, with too much detail, in my initial post but I actually did this method on a fix and flip.

I can think of a lot of reasons a particular business initiative might fail other than flawed data, and these indexes are more fundamentally part of their core business that seems to have done quite well.

First, deep relationships with people so that you know them well, they know you well, and relationship continues for many years.  

Perhaps this is their argument as well?  

Your plumber/GC should/should have definitely know(n). 

You can even plan vacations that are written off if using the sandwich method by doing work on Friday and Monday for real estate and the weekend is there so you do vacation stuff so all lodging and travel can be written off. 

Hello everyone,I am from Alexandria, VA located at the border of Washington DC and Prince George County, MD working for a kitchen and bath remodeling company since 2017 known as European Granite Design that also fabricates granite, quartz, marble and quartzite countertops since 2003.I'm experienced Sales and project manager also designs kitchens & bathrooms for remodeling.Using my expertise and connections I want to start working for myself flipping old condos or houses in the Washington DC, Maryland and Northern Virginia (DMV) area.