During the early 21st century many of the notable buildings of 'old' Treherbert were demolished; including Treherbert Hospital, Treherbert Police Station, Dunraven School (Tynewydd), Blaencwm School, Blaenrhondda School, Penyrenglyn Infants and Junior School, Treherbert Infants School and Libanus Chapel.
Businesses in Treherbert have also joined together to create the Treherbert Chamber of Trade, Commerce and Tourism.