Select comma separated value from multiple column

Question

I need to select value with comma separated from more than one column.

But need to Ignore if value is NULL

this needs to be done in SQL SERVER 2008.

and getting result like

, THE PINNACLE, BUT need to ignore if value IS null (No need of extra comma)

SELECT TOP 100 ISNULL(BuildingNo, '') + isnull(BuildingName, '') AS AddressLine1

,COALESCE(BuildingNo + ', ', '') + COALESCE(BuildingName + ', ', '') AS AddressLine1

,*

FROM v_AddressList VL

Getting result like 

, THE PINNACLE,  : with extra , in first if value is null