The OCBC HQ building is located along Jalan Tun Perak, opposite the old High Court historic buildings. It consists of two levels of basement, two levels of Bank Branch facilities, a podium consisting of another three levels housing Bank's own departments and a five storey elevated carpark, and a ten level office block sitting above the carpark podium.

The site was amalgamated from eleven individually owned pre-war shophouses. The facade facing Jalan Tun Perak was a re-creation of the original shophouses facade and finished in a combination of polished granite and sprayed textured coating.

As the site is prone to flooding, a series of floodgates were designed and installed to protect the basement floors.