His first position was as a District Engineer however as a result of his involvement in a number of government buildings in Colombo and his architectural qualifications he was entrusted with the job of designing and supervising the construction of the GPO.

160,000 over the original construction budget)[5] with the steelwork fabricated by Walker Sons and Company and the granite sourced from quarries in Ruwanwella and Ratnapura.

[5] The building was constructed in a typical Colonial renaissance architectural style, with its 775 m2 (8,340 sq ft) basement designed along Doric lines, the 1,721 m2 (18,520 sq ft) ground floor incorporating Ionic architecture whilst the matching upper floor features Corinthan influences.

[18] The GPO was moved in May 2000, for security reasons during the Civil War to the current Sri Lanka Post headquarters,[11] a modern nine storey building, at 10 D. R. Wijewardene Mawatha (formerly McCallum Road), which also hosts the Postal Museum.

[21][22] In June 2017 the United Postal Trade Union went on a three-day strike in order to stop the government's plans to sell the Nuwara Eliya, Kandy and Galle Fort post offices to private developers, and seek the re-location of the Colombo General Post Office back to its original building in Colombo Fort.