Look at their marketing strategy.

@Dave Rav - I agree with the others that there is no really good way to estimate insurance costs, but I've found some consistency within a particular market/zip code if the rebuild costs and deductibles are the same.

If not, and if these are homes that are in a market where dispositions are not too daunting you are likely best served selling these homes and re-investing in properties that can lead to additional equity.  

I'm thinking about ramping up my marketing and having agents send me deals with their criteria.

I have searched online and found no company or market for this type of transaction.

That is a very general question and each area has its own market conditions so what works well in one area may not in another.

.- Just be careful as many companies are offering flat fees, but do NOT tell owners they may only be putting their rental on Zillow and their website, but NOT the MLS.Renewal Fees typically are flat-fee based and another one-month fee is unreasonable. 

Sat on market for 4 months before they dropped to $125k.

Historically real estate and markets are nearly identical over a long period of time. 

I have already watched so many videos and read so many websites but it just keep opening up more possibilities.