Set up alerts for when a property lists that meets your criteria.9. 

I like the search features: https://www.biggerpockets.com/searchAlerts can be really helpful too: http://www.biggerpockets.com/alerts

I am doing research on a building owner and he is listed as the owner of the property but the small businesses renting each unit are listed as the taxpayer and their small business is listed on city website as taxpayer.And then it shows no number or amount for taxes paid.Can a landlord/owner put a small business as the tax payer?

Set up alerts for when a property lists that meets your criteria.9. 

I don't want to keep boring you but also check out the tax sale Charleston county makes millions a year selling properties from delinquent tax payers.

At a 17% tax rate, my cost for the $482k withdrawal (includes tax payment) comes to $82k in taxes.  

In state though, have you networked with a solid realtor and/or Property manager to see if they can set you up with alerts and off market deals?

I like the search features: https://www.biggerpockets.com/searchAlerts can be really helpful too: http://www.biggerpockets.com/alerts

I found the deal via my realtor, who alerted me as soon as it became available.

Get in touch with real estate agents, and have them set you up with automatic email alerts in your area.