Hacking without a permit can cost you dearly. Here is when approval is required and how the process works.
When a permit is required
Yes — hacking works require necessary approvals. For HDB flats, a renovation permit is required for works such as removing or hacking walls, hacking floor finishes, and altering bathrooms or kitchens. Condominiums require MCST approval, and some works in private property may need professional endorsement.
What can and cannot be hacked
The fundamental rule: structural elements are untouchable.
- Non-structural partition walls: generally can be hacked with permit approval
- Structural walls, columns and beams: cannot be hacked, ever
- Bathroom floors in new BTO flats: restricted for the first years due to pre-installed waterproofing
- External walls and facade elements: not allowed
How the application works
HDB renovation permits are submitted by an HDB-registered contractor through the official system, with floor plans marking the proposed works. Approval timelines vary; simple hacking approvals often come through within days to a couple of weeks.
We assist with permit applications where required as part of every project — identifying what needs approval, preparing the submission and scheduling works around the approval date.
The cost of skipping it
Unauthorised hacking can lead to fines, mandatory reinstatement at your own cost and serious complications when selling the flat. The permit is not bureaucracy to dodge — it is the record that your renovation was done safely and legally.
Unsure whether your plans need a permit? WhatsApp us a marked-up floor plan and we will advise for free.
Planning a renovation?
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