The three landlords currently each have a building seeking the certifications - Keppel REIT’s Keppel Bay Tower, a 386,000 sq ft office building at Harbourfront; Shaw Towers Realty’s Shaw Tower, a 33-storey building on Beach Road currently undergoing redevelopment that is managed by Lendlease, as well as PAG's 400,000 sq ft StarHub Green building in Paya Lebar.