### Clue: Property like flats (6)
### Answer: ASSETS 
 ### Explanation: Definition: Property
  AS(*like*, as in "as one") SETS(*flats* as the plural of a piece of scenery in a theatre, also called a set.  I'm not sure if this is correct, but I couldn't find another connection between the nouns "flats" and "sets".  I think that "flats" can only be a plural noun.)