Energy efficiency of buildings

This indicator gives an impression of the energy efficiency of buildings during their use phase. That efficiency is determined on the basis of the Energy Performance Certificate (EPC), which tells us more about the energy required to meet needs.

313 kWh/m²

In 2023 the average score of submitted EPCs was 313 kWh/m2, a value which has been declining over the past few years.

What do we see?

The graph below shows the average EPC score of housing units for the relevant year of submission. Compared to 2013, the oldest year for which VEKA has data available, we see a steady improvement in energy efficiency across all housing types that have been offered for sale or rent over the years. In 2023, the average value is 313 kWh/m², a 21% improvement compared to 2013.



What’s the aim?

By 2050, the Flemish government aims for an average EPC value of 100 kWh/m². This reduction will be achieved through improved insulation and more sustainable energy sources. In the context of the circular economy transition, we know that the energy demand of buildings has a major impact on material consumption. However, there is also a large materials demand associated with building and renovation. It is therefore important to make thoughtful choices of materials and techniques to reduce the environmental impact during a building’s life cycle, and to keep opportunities for reuse and recycling as open as possible. The policy programme Towards Circular Building (Op weg naar Circulair Bouwen) proposes that a quarter of buildings should be designed or renovated according to the principles of circular construction by 2030.

What does this indicator measure?

The EPC score, or energy performance certificate score, represents the calculated energy consumption per year per square metre of usable floor area. Since 2008, it has been mandatory to draw up an EPC when selling or letting existing houses and flats. The data come from the Flemish Energy and Climate Agency (VEKA).

Discover more topics

Average age of buildings
58.8 years

Average age of buildings

This indicator shows the average age of buildings in Flanders.
Living area use efficiency
0.24 - 7.6 m² / m² plot area

Living area use efficiency

This indicator shows how much habitable area a building provides relative to the lot a building occupies.
Number of social housing units
157,504 units

Number of social housing units

This indicator shows how much social housing is available and rented in Flanders.
Number of renovations
21,077 permits

Number of renovations

This indicator shows the annual number of renovation permits for residential and non-residential buildings.
Recycling rate of building materials
96%

Recycling rate of building materials

This indicator provides more insight into the recycling rate of building materials.