I got a ton of good info and great idea with starting separate posts for different topics. 

While on the topic, are there other companies that do stuff like this??

Education on this topic is free and abundant because it doesn't have that much value.

You must have missed this recent thread in which we beat this topic to death over 6 colorful pages: https://www.biggerpockets.com/forums/24/topics/1143427-gener...It really depends on the type of project, scope of work, and whether you're dealing with a real professional GC or more of a handyman/laborer type situation.

I spent the last three weeks scraping data on this very topic. 

Here are a few of the old threads, to get you started (and probably more confused).https://www.biggerpockets.com/forums/51/topics/1164339-what-...https://www.biggerpockets.com/forums/51/topics/1177752-capital-gains-on-partial-releasehttps://www.biggerpockets.com/forums/51/topics/1200256-tax-implications-of-holding-period-for-property-flip-in-floridahttps://www.biggerpockets.com/forums/51/topics/1184208-self-employment-or-long-term-investment-income

.: @James Wisehttps://www.biggerpockets.com/forums/21/topics/1191462-colum... 

Here are some BP topics on this: https://www.biggerpockets.com/search/topics?

Here is a link from an older post on the same subject with some options.https://www.biggerpockets.com/forums/52/topics/262681-rent-recovery-serviceIt would be good to get a collection on the persons credit report to help the next landlord even if there is no $$ recovered.

https://www.biggerpockets.com/forums/925/topics/1080912-is-m...Also you can contact Property Management Companies which Manage MTRs in the states that you are interested in and they can be of help, also local realtors who are investor friendly and know the lay of the land.Example  https://www.biggerpockets.com/forums/925/topics/1129689-mtr-...