I had a pretty successful career doing that and made good money but, it was not my passion, I love real estate and everything about it the good and the bad.

Generally speaking, have any of you invested in this area and been successful?

I have a relative that has some flipping experience (2 successful flips) kind of mentoring me along.

Unless you have $5 - 10k MONTHLY to spend on marketing this is what you need to do to have any chance for success with wholesaling.  

I quit my corporate job in 2001 for a career in Real Estate Investing!  

I've managed a number of successful rehabs and put a lot of sweat into them as well.

What's the highest success percentage method to find a previous tenant's new address for this? 

It’s not a place where you can just buy anywhere and expect success.

Thoughtful upgrades and efficient project management made this a successful venture, highlighting the strength of our partnership and commitment to delivering high-quality results.

If you're going to run a successful business renovating houses, ultimately you being proficient at/and or managing said proficiency in estimating will be a crucial part of your underwriting.Google "how to estimate house remodeling" your hard work will be rewarded.