Lots to build on (5)
I believe the answer is:
sites
(Other definitions for sites that I've seen before include "Is set (anag)" , "Is set among building locations" , "Locations or positions, as for building" , "Spots" , "Locates" .)
I believe the answer is:
sites
(Other definitions for sites that I've seen before include "Is set (anag)" , "Is set among building locations" , "Locations or positions, as for building" , "Spots" , "Locates" .)