ACS (International) has been completely renovated and new building blocks added since its establishment in January 2005. All rooms are air-conditioned and equipped for both wifi and hard wired computers.
Administration Block: The partial two-storey building houses the General Office with a conference room and a dining/meeting room, among others. The 500-seat Oldham Chapel, on Level 2, is used by both the school for Chapel and large meetings, and by the Holland Village Methodist Church as its place of worship on Sundays.
Foo Hee Lim Block, and Old and New Blocks: In addition to general classrooms, the school features 16 Science laboratories that face Jalan Hitam Manis.
Music Centre and Canteen: Two specialist music classrooms plus one music technology computer laboratory and four music practice rooms occupy Level 2. A 550-seat canteen serves Chinese, Western and Vegetarian cuisines, and snacks. A Student Centre, extended from the canteen, is a popular meet-up space for project discussions and get-togethers.
Library Block (Darren Loh Block): The six-storey building houses two storeys of library space and two floors of general classrooms, one floor for three specialist art rooms and one computer laboratory, and one floor for Drama/Theatre. The Drama floor contains one Black Box, one kiln room, resource space and general classrooms.
Sports Hall, Sports Block and Sports Field: A modern Sports Hall, fully air-conditioned, contains two basketball courts and a climbing wall. A gymnasium with weights and treadmills, a medical centre and the Holland Village Methodist Church office are housed in the Sports Block. The artificial Astroturf, which covers a full-sized football field is a popular venue for curriculum, co-curricular activities (CCAs), lunch time and after-school activities. Two tennis courts are also available.