How high can landed properties go?

A tall building in construction with metal roof extensions under a bright sunny sky

How high is too high? Depending on local council regulations, landed properties are subject to maximum height restrictions.

While there is a growing trend of revamping older homes to increase their original height, a key question remains: How high can home owners legally go with their renovations?

There also comes a point when a landed property reaches its maximum price potential. Adding another floor in the hope of increasing value could backfire and lead to higher costs instead.

While it may be difficult to determine the exact number of four-storey landed properties in Malaysia, they are certainly less common than the traditional one, two and three-storey homes.

Interestingly, two- and three-storey terrace houses accounted for the largest share of transactions in 2024, according to the National Property Information Centre.

Understandably, people want to make the most of space in landed properties, especially in bustling urban areas where land is scarce and property prices keep rising.

Adding extra storeys seems like a smart move to fit more family members in or boost the property’s value for renting or sale. But the process is not as easy as it sounds.

It comes with its fair share of regulations, structural challenges and market factors to consider.

Calculate the plots

When it comes to adding extra storeys to a building, two important factors to keep in mind are plot ratio and density. According to the Town and Country Planning Act 1976, plot ratio refers to the total floor area of a building in relation to the size of the plot of land, which is measured by boundary lines.

This ratio helps define the maximum area and intensity of what can be built on a specific piece of land.

While it does not directly limit how tall a building can be, local zoning laws often come with their own height restrictions. So, if you have a smaller footprint, you might be able to build higher.

In Malaysia, different local authorities determine their own plot ratios based on state-specific guidelines, resulting in significant variations across the country.

For instance, the Kuala Lumpur City Plan 2020 allows a plot ratio of up to 1:10 for both commercial and residential properties, whereas in Kedah, the limit is set at 1:3.

Plot ratios are managed through something called Floor Area Requirement (FAR). These FAR rules vary for commercial, industrial and mixed-use developments based on their designated zones while for residential areas, they depend on current living trends and development rates in city centres.

Generally, residential zones have lower plot ratios than commercial ones to help keep a good balance between density and livability. If a homeowner wants to go over the allowed plot ratio, they will need special approvals, which are not guaranteed and often involve a pretty long application process.

Regulatory frameworks

When someone is looking to add extra storeys to their landed home, the first major obstacle they face is navigating local planning regulations.

In Malaysia, each municipality is overseen by its own local council, which has its own set of building bylaws and development guidelines. These rules typically lay out the maximum allowable plot ratios, building heights and setbacks, all of which determine how much vertical expansion is feasible.

Building height restrictions are also a crucial factor. These limits are put in place to maintain the character of residential neighbourhoods, prevent overshadowing of adjacent properties and ensure there is adequate light and ventilation.

Local councils take into account various considerations like infrastructure capacity, traffic flow and environmental impact when reviewing applications for additional storeys.

To obtain planning permission, applicants must submit detailed architectural plans, structural engineering reports and other necessary documents to the local council. This process can be long and expensive, with no guarantee of approval.

Furthermore, any construction carried out without the appropriate approvals can lead to significant fines and even demolition orders.

Structure and extra loads

Aside from regulatory compliance, it is time to whip out the trusty magnifying glass to study the structural integrity of the property.

Are the foundations as solid as they were upon first purchase? What about the walls and supporting frames?

Adding storeys significantly increases the load on the foundation, walls and columns. A structural engineer must assess the existing structure to determine its load-bearing capacity and recommend necessary strengthening measures.

Multiple renovation sites paint the process as underpinning the foundation, reinforcing walls and columns with steel beams and upgrading the roof structure. These modifications can be complex and expensive, potentially exceeding the cost of building a new house.

In older homes, the existing structure may simply be unsuitable for vertical expansion, making demolition and rebuilding a more viable option.

Furthermore, the design of the additional storeys must consider factors like natural lighting, ventilation and accessibility. Incorporating features like skylights, courtyards and elevators can enhance the livability of the expanded home but they also add to the overall cost.

Angry neighbours

When considering the addition of extra storeys to a building, the homeowner needs to take practical factors into account.

They need to assess how accessible the construction site is, whether there is enough skilled labour available and how angry the other neighbours would get. Is it worth burning bridges for?

The construction process tends to be lengthy and can cause significant disruption, including noise, dust and increased traffic. Residents may need to temporarily relocate, which adds to the overall inconvenience and cost.

Additionally, the maintenance costs for a multi-storey home are usually higher compared to those of a single or double-storey residence.

Added value

While adding storeys can increase the floor area of a landed home, it does not necessarily translate to a proportional increase in value.

The market value of a property is influenced by various factors, including location, size, design and condition. In some areas, adding a storey might enhance the property’s appeal to larger families or multi-generational households.

However, in other areas, buyers may prefer single or double-storey homes for their perceived spaciousness and privacy. There are no four-storey gates, after all.

The cost of adding storeys should always be weighed against the perceived increase in value. If the cost of construction in no way reaches the potential return on investment, it might just be better to renovate the existing space or move to a larger property altogether.

The ideal number of storeys is not a fixed formula but a delicate balance between maximising space and preserving liveability, affordability and neighbourhood character.

When vertical expansion risks becoming a costly misstep, home owners would be better served by focusing on optimising existing space and considering alternative solutions that support their long-term needs.