Ima business consultant that opérate in real estate  Investments im THE creo AND chairman of Walker Enterprize im TYRONE to get my company booming 

My interest these days is purchasing low-cost land in economically booming areas and building modular triplexes on that land and then renting them.

As pointed out some liens may not be on County record so you need to call those departments, such as sewer and water and possibly tax collector.

Basically to dumb it down in 2005 my father bought four properties right around the boom before the bust.

Below is Everett another city outside of Boston filled with multi family homes.Below is Chelsea a city next to East Boston which is seeing a huge boom in property families for the multi families.

Cash out refinance on one property to pay off the mortgage of another entirely, and boom you now have 1 fewer financed property.

I don't know anything about Atlanta, but it's probably pretty similar to Charlotte - a nice secondary market that experiences booms in the good times with job growth and lending via our big banks.

Sugerland seems to be booming. 

Does empty land price undergoes boom and bust like property ?

I may have found it, but not sure...On this counties' tax collector site, you are able to search "Deed Status" and sub search, "Applied".