Hopefully you did not pay too much for them but basically your best bet isto let them go to tax sale again and eat your losses. 

Any one with experience dealing with fire alarm control panel replacement, any insight is appreciated.I have done some research basic model is around $500 to $2000, advanced is $2000 to $5000, more sophisticated system is 5000- 10k the sophisticated system is meant for buildings with multiple elevator, our building only has one elevator, the quote seems on a high end. 

I’m not sure what a basic contract is, @Steve Balinski.

Some people swear by high-end tracers like TLO or BatchSkiptracing, while others get solid results with a service like DealMachine which offers unlimited skiptracing with their basic package.

VRBO and Airbnb have all the basic communications that I use.Thanks James.

With all of that said, I'd say your idea is basically a step toward investing in unsecured debt (on the spectrum of secured to unsecured).

It covers resetting breakers, tightening hinges, unclogging basic drains, replacing smoke alarm batteries, and resetting garbage disposals.

Quote from @Ibrahim Mansaray:  Hey everyone, my name is Ibrahim and I’m new to real estate — just getting my feet wet in wholesaling.I’ve spent the last couple months learning the basics, building my knowledge, and putting in some work.

We are not a non-profit org or flipper advocacy group to teach them basics of economics 101 and investment strategies.

I'm looking to basically rinse and repeat.