2006 New York Code - Construction And Purchase Contracts.

 
    §  1599-gg.  Construction  and purchase contracts. The authority shall
  let contracts for construction or the purchase of supplies, material  or
  equipment  in  the same manner, so far as practicable, as is provided by
  law, for contracts of the  village,  except  that  where  the  estimated
  expense  of  a  contract  does  not  exceed  five  hundred dollars, such
  contract may be entered into without public  letting.  Nothing  in  this
  section shall be construed to limit the power of the authority to do any
  construction  directly  by  the  officers,  agents  and employees of the
  authority.