Suppose a person just walks into a Century 21 to start looking for a house, how does the broker decide who gets that lead?

Suppose a person just walks into a Century 21 to start looking for a house, how does the broker decide who gets that lead?

For traders, the Dutch Tulip crisis centuries ago. 

Are you looking at smaller brokerages or the bigger brokerages like Coldwell, Keller, Century 21, etc? 

No one is walking into a century 21 office asking for available Lots?

Wait a second here, @Vince Lucas aren't you a Realtor working for the Century 21 Homestar team?

Grandfathered in generally comes from properties built like a century ago and the zoning or building codes changed through the decades but the city decided to allow the ones that have been in existence for decades to remain the same.  

That seems like the deal of the century.

Case shiller lists LA as the 2nd best in nation for buy n hold return for this century.   

It still on very rare occasions is done, and also on rare occasions for retrofit/modification work, you may still look for opportunities to support your structure/joist systems etc with the masonry - however sometime in the early 20th century pure masonry started going out of favor, for structures being built entirely with their wood/steel, and the masonry you saw was then basically an aesthetic detail that was 'tied' to the structure holding everything up.