10 HDB Renovations You Didn’t Know Were Illegal — Fines Up to $5,000

Planning an HDB renovation in Singapore? Before you start hacking, drilling or building, it is important to understand the HDB renovation rules and guidelines.

Not every renovation idea you see online is allowed in an HDB flat. Some works require HDB approval or a renovation permit, while others are strictly restricted.

Carrying out unauthorised renovation works can result in penalties and may require you to reinstate your flat. Under the current Housing & Development (Renovation Control) Rules, homeowners must engage a registered renovation contractor and obtain the required approval before carrying out works. A breach can result in a fine of up to $5,000.

Here are 10 HDB renovation works homeowners should be careful about.

1. Hacking or Demolishing Walls Without Approval

Thinking of opening up your kitchen or living room?

All demolition and hacking of walls, whether partial or complete, require HDB's prior written approval. Structural elements such as reinforced concrete walls, columns, beams and slabs must not be tampered with.

Always check whether the wall can be hacked before starting work.

2. Modifying Structural Walls, Beams or Columns

Structural elements are there for a reason. HDB does not allow homeowners or contractors to tamper with reinforced concrete walls, columns, beams and slabs. Even seemingly small modifications can affect the structural integrity of the building.

Instead of hacking structural elements, consider using carpentry, feature walls, lighting or furniture to achieve the desired design.

3. Renovating the Household Shelter Like a Normal Room

The household shelter (HS) has specific renovation restrictions. Works such as hacking the shelter walls, modifying the HS door, altering ventilation openings and certain types of wall or floor finishes are not permitted.

If you want to maximise your household shelter, always design around the existing requirements rather than modifying the shelter itself.

4. Raising the Floor Without Checking HDB Requirements

Raised platforms and platform beds may look attractive, but floor height is regulated.

HDB has specific requirements for floor finishes, screed and waterproofing. For example, the total thickness of certain floor finishes and screed is subject to a 50mm limit.

Before building a raised platform, make sure the proposed floor level complies with the applicable HDB guidelines.

5. Creating Unauthorised Platform Storage

Platform beds and raised platforms are popular in smaller HDB homes because they appear to provide extra storage.

However, using the space underneath a platform as storage is a renovation idea homeowners should avoid.

Instead, consider:

• Full-height wardrobes

• Built-in cabinets

• Storage beds

• Custom carpentry

• Vertical storage solutions

You can still maximise your HDB space without creating potentially non-compliant renovation features.

6. Making Unauthorised Bathroom or Plumbing Changes

Want to move your toilet bowl, basin or shower area? Bathroom renovation involves more than changing tiles. Plumbing, sanitary pipes, floor traps and waterproofing all need to comply with HDB requirements.

HDB provides specific guidelines for water and sanitary plumbing works, so homeowners should check whether approval is required before changing the bathroom layout.

A beautiful bathroom is not worth the risk of causing leaks or violating renovation requirements.

7. Replacing HDB Windows Without an Approved Contractor

Window replacement is not a normal DIY renovation job. HDB requires all window works to be carried out by BCA-approved window contractors.

This is especially important for high-rise HDB flats, where improper window installation can create serious safety risks.

Before replacing your windows, check the applicable HDB and BCA requirements.

8. Installing Air-Conditioning Without Following HDB Requirements

Installing air-conditioning may seem straightforward, but there are specific requirements for HDB flats.

HDB states that air-conditioners must be installed by a BCA-trained air-conditioning condensing unit installer. There are also requirements covering electrical loading, installation locations, condenser weight and pipe routing.

For example, air-conditioning pipes must not be embedded in reinforced concrete slabs, columns or beams.

9. Carrying Out Electrical Works Without the Right Professional

Adding power points, lighting and electrical appliances is common during an HDB renovation.

However, electrical works should be carried out by an EMA-licensed electrical worker where required. HDB specifically advises homeowners to engage a licensed electrical worker for electrical works.

This helps ensure that your home's electrical installation is safe and compliant.

10. Renovating Without a Registered HDB Contractor

One of the most important HDB renovation rules is choosing the right contractor.

HDB requires flat owners to engage a contractor registered in its Directory of Renovation Contractors (DRC). This applies even to renovation works that do not require HDB approval.

Before signing your renovation contract, always verify that your contractor is properly registered.

Carry Out Unauthorised HDB Renovation Works?

Illegal or unauthorised renovation works can result in more than just a fine.

Under the current Housing & Development (Renovation Control) Rules, homeowners who breach the requirements can face a fine of up to $5,000. HDB can also require unauthorised works to be removed and the flat reinstated.

That means you could potentially pay for:

Renovation → Removal → Reinstatement → Renovation again

This is why it is always better to check the HDB renovation requirements before work begins.

Planning an HDB Renovation?

A good renovation is not just about creating a beautiful home. It is also about making sure the design works with the existing structure and HDB renovation guidelines.

Before you hack, build or relocate anything, check whether approval is required.

At E+e Design & Build, we help homeowners plan practical and functional HDB interiors while considering the relevant renovation requirements.