To install a vanity cabinet in your HDB (Housing and Development Board) bathroom, follow these general steps:

1. Measurements and Planning: Measure the space where you want to install the vanity cabinet. Consider the dimensions of the cabinet and make sure there’s enough space for it without obstructing other fixtures or pathways.
2. Choose the Right Vanity Cabinet: Select a vanity cabinet that fits your space and meets your storage needs. Consider factors like size, style, material, and features such as drawers, shelves, or mirrors.
3. Prepare the Area: Clear out the space where you’ll install the cabinet. Remove any existing fixtures or items that might be in the way. Ensure the wall where you’ll mount the cabinet is clean and free of debris.
4. Mounting the Cabinet: If your vanity cabinet comes with mounting hardware, follow the manufacturer’s instructions for installation. Use a level to ensure the cabinet is straight. If necessary, use wall anchors for added support, especially if you’re mounting the cabinet on drywall.
5. Connect Plumbing (if applicable): If your vanity cabinet includes a sink, you’ll need to connect the plumbing. This may involve installing a faucet, drain, and water supply lines. If you’re not comfortable with plumbing work, consider hiring a professional.
6. Finishing Touches: Once the cabinet is securely mounted and any plumbing connections are made, double-check everything to ensure it’s functioning properly. Adjust shelves or drawers as needed for proper alignment.
7. Cleanup: Clean up any debris or mess created during installation. Wipe down the cabinet and surrounding area to remove any dust or dirt.
8. Decorate and Organize: Once the installation is complete, decorate your vanity cabinet with personal touches like accessories or decorative items. Organize your bathroom essentials inside the cabinet for a neat and tidy appearance.

If you’re not confident in your DIY skills, consider hiring a professional handyman or contractor to install the vanity cabinet for you, especially if it involves complex tasks like plumbing or electrical work. Additionally, make sure to comply with any regulations or guidelines set forth by your HDB regarding renovations or modifications to your apartment.