In Jamaica, the regulations regarding home extensions vary depending on the scope of the project and local zoning laws. Generally, minor extensions or alterations to your existing home may not require a new application for planning permission or building consent. However, significant extensions or modifications that affect the structure or appearance of the property typically necessitate approval from the relevant authorities. It's essential to consult with local planning offices or a qualified architect to determine the specific requirements for your proposed extension and ensure compliance with regulations.