Some renovation projects, as stipulated in the guidelines for building and sanitary work, mandate an official permit from HDB. Prior to commencing any renovation work falling under this category, securing the requisite permit is imperative. However, even if your renovation doesn't necessitate a permit, strict adherence to the prescribed guidelines remains essential; otherwise, it may be classified as unauthorised work. In such cases, HDB may require you to cease, rectify, or remove the unauthorised modifications, restoring your flat to its original state. Depending on the circumstances, administrative fees may apply. To initiate this process, it's essential to empower your chosen renovation contractor to submit an electronic renovation application on your behalf, complete with a signed acknowledgment form. Upon receipt of the submission, you'll receive an SMS notification, ensuring a smooth and compliant renovation journey.