According to various drama websites “The Penthouse” season 3 will reportedly air on June 4, 2021 with 12 episodes. Season 2 is still airing via SBS and Viu, as of writing. The drama will air its final episode on April 2, with a special episode that will air on April 3.
“The Penthouse” season 3 will air only once a week, which will be every Friday. SBS has not yet released an actual confirmed date, but they confirmed that the series will air in June 2021.
UPDATE: “The Penthouse 3” is confirmed to air on June 4.