He has extensive professional experience in private residentials, commercial buildings and mix used developments. Equipped with experience in designing for projects dealing with steep slopes and terrains, he has successfully completed many private residentials. Choo is also an active speaker and has conducted various workshops in the Malaysian Institute of Architects (PAM). He has participated in various dialogues with the local authorities. As part of the Technical Working Committee, he assisted the Ministry of Housing and Local Government to prepare ‘Guidelines on Buildings Requirements for the Disabled Persons’.