Sole supplier has short time to take on pool renovation in New York (8)
I believe the answer is:
monopoly
'sole supplier' is the definition.
'short time to take on pool renovation in new york' is the wordplay.
'short time' becomes 'mo' (slang abbreviation for 'moment').
'to take on' says to put letters next to each other.
'renovation' is an anagram indicator.
'in' indicates putting letters inside.
'new york' becomes 'ny'.
'pool' is an anagram of 'opol'.
'opol' put within 'ny' is 'nopoly'.
'mo'+'nopoly'='MONOPOLY'
'has' is the link.
(Other definitions for monopoly that I've seen before include "Sole seller" , "Domination" , "Situation of one company's dominance in a particular market" , "Exclusive control or possession of something" , "Exclusive (trade) control" .)