HDB Interior Design Singapore: Hacking Walls Legally

HDB interior design Singapore renovators often ask which walls they can tear down. The rule is firm: load-bearing walls, beams, columns and slabs cannot be hacked, and HDB must issue a renovation permit before any works begin. Get this wrong and you face stop-work orders plus the cost of rebuilding the wall.

Know what HDB counts as structural

HDB treats the following as off-limits for hacking: load-bearing walls that carry the floor above, beams and columns, and the concrete slab itself. The Bomb shelter or household shelter is also protected. You may only add light fittings and laminated flooring inside it, and the door must stay. Treat any wall marked with a hash pattern on your floor plan as structural until an engineer says otherwise.

A common mistake is assuming a short wall between the kitchen and living room is free to remove. In many HDB layouts that wall holds a service riser or a structural return. Check before you quote.

How to check your flat's plan before hacking

Do not guess from memory. Work through these steps with your HDB Licensed Renovation Contractor.

1. Request the official floor plan from My HDBPage or your sales paperwork. The structural walls are shown with thick lines.
2. Compare the plan to the as-built wall on site with a laser measure. Renovated resale flats sometimes hide pipes inside a hacked wall.
3. Mark every wall you want removed in red and every wall you want to keep in green on a printed copy.
4. Ask the contractor to submit the plan to HDB's structural check, or engage a Qualified Person if the wall is unclear.
5. Wait for the renovation permit. HDB processing takes about two weeks, so book your hacker after approval, not before.

Build your HDB interior design around safe walls

Once you know the fixed walls, design the open feel you want with legal moves. Many flats gain a brighter living room by removing only a non-structural stud wall, not the load-bearing one. Your HDB interior design Singapore layout should keep the kitchen sightline open while leaving the structure intact.

Non-structural partitions you can move

HDB accepts lightweight, non-ceramic partitions for non-structural dividers. These are framed in aluminium or timber stud and clad in laminate, so they add little weight to the slab. Use them to split a 5-room flat of about 110 sqm into a study, or to close a storeroom without touching concrete.

• Lightweight laminate partition: cheapest, fastest, easy to reconfigure later.
• Aluminium-framed glass: keeps light flowing between rooms, good for a home office.
• Sliding panel on a top track: no floor channel to trip on, useful in a 3-room flat.

None of these need a structural check, but the works still go under the same HDB renovation permit, and the contractor must be in the Directory of Renovation Contractors.

Apply for the HDB renovation permit the right way

The permit is not optional. Follow the order below so you do not pay for works that get stopped.

1. Engage an HDB Licensed Renovation Contractor from the HDB Directory of Renovation Contractors.
2. Agree on the scope in writing, listing each wall to be hacked and each partition to be built.
3. The contractor submits the permit application through HDB's system with the floor plan attached.
4. HDB reviews structural safety and may request changes; this step takes about two weeks.
5. On approval, post the permit at the flat and start works only within the allowed noise window.
6. Keep noisy hacking and drilling to weekdays 9am to 6pm; no works on Sundays or public holidays.

Removing the right wall can transform a 90 sqm 4-room flat, but the permit and the structure come first. A whole-house customization team plans the hack, the new partition and the carpentry together, so you open the space without crossing HDB's lines or paying to rebuild a wall you should never have touched.