Their minimum for install is the lowest as well.I hope this helps -- I trust these folks and would use any of them again & again on future renos. 

My original plan was to flip houses but I do not trust the Illinois market right now with single family homes.

(I didn’t trust cc’s, so I avoided them) but my score is improving slowly.

Those are run by trusts and non profits.  

Although I have already read about the laws related to security deposit matter in CA Civil Code Section 1950.5, I would like the property owners with similar experiences to me consider my situation and advise me regarding the following items1- How to calculate their security deposit and provide an itemized list, while I do not have any invoice in my hands. 2- As my tenants have not left any forwarding address, shall I contact and ask her the new address for sending the itemized list?

That should help insure some sense of priority and trust to find the right "investment." 

There are a TON of deals I've done where if I used the 70% rule I would have never considered the deal yet they made me 30k or more.One of the most trusted investors I know who is making 100k a month in passive income has a rule of $200 per door and 10% maintenance/management, insurance cost etc...Write out the numbers and see what it comes out to.

Thanks  Paula, it feels good to know that I'm not the only one who has put to much trust in a Contractor. 

Trust yourself and don't let other people's valuation sway your decision.

So lesson learned- now rifi, move on, and next time get an inspection and/or add language in your contract that addresses this type of potential issue.