How long is registration for a Branch Office valid for? September 22, 2017 Once approved, registration for a Branch Office in Singapore is valid for one year and subject to an annual renewal. Suggested Readings As a foreign entity, should we incorporate a subsidiary or register a branch office in Singapore? Are there restrictions on the types of names I can use for my Branch Office? Can all the directors in the foreign branch be foreign? Can I set up a branch office in Singapore myself?