Guide to Letters of Assurance in BC Building Code

This guide provides detailed information regarding the Letters of Assurance as stipulated in the BC Building Code 2024 and the Vancouver Building By-law 2025. It outlines the purpose of the guide, which is to ensure the appropriate and consistent application of these letters. The document describes the roles and responsibilities of various stakeholders involved in the execution of Letters of Assurance, including registered professionals and owners. It also explains the process for completing and submitting these letters, addressing changes in registered professionals before and after a building permit is issued. The guide further clarifies the scope of Letters of Assurance, detailing what they are and what they are not, as well as the components not regulated by the Building Code or Plumbing Code. Additionally, it discusses the application of these letters to various parts of the building code, including structural design, environmental separation, and plumbing services. This comprehensive guide serves as a resource for understanding the regulatory framework surrounding Letters of Assurance in British Columbia.