July 2, 2025






An energy-efficient home is not only good for the environment, but also for the wallets of landlords and tenants. A home's energy label plays a crucial role in the Housing Valuation System (WWS), which determines how many rental points a home receives and, therefore, the maximum rent. A home with an A energy label can earn significantly more points than a home with a lower label, such as E, F, or G, which directly affects the rental value. In this blog, we delve into the influence of the energy label on rental points, how you can achieve label A, and why this is a smart investment for landlords. These insights are based on practical experience with sustainability and WWS optimization, as shared in guest lectures on property management.
The energy label indicates how energy efficient a home is, from A++++ (very efficient) to G (very inefficient). Since the introduction of the new energy label on January 1, 2021, as laid down in the guidelines of the national government, the label carries more weight in the WWS. A higher energy label means more WWS points, which leads to a higher maximum rent. This is particularly relevant for landlords of independent and non-independent homes, such as apartments or rooms.
Example: An independent 50 m² home in Rotterdam with energy label F (-9 points) can achieve a point increase of 46 points when upgraded to label A (+37 points), which can increase the rent by hundreds of euros per month.
Improving an energy label to A requires targeted sustainability measures that optimize a home's energy performance. Here are the most effective steps, as often discussed in guest lectures on property management:
Practical example: In a project in Rotterdam, we transformed 40 homes from energy label E/F to A by combining solar panels, insulation, and heat pumps. This resulted in a point increase of +52 per home (including label and other improvements), bringing the homes to private sector status (187+ points).
Tip: Take advantage of subsidies such as the Sustainable Energy Investment Subsidy (ISDE) and the Rental Property Sustainability Subsidy (SVOH) to reduce investment costs. In the Rotterdam project, subsidies reduced the costs from €17,500 to €13,160 per home, with an ROI of 18%.
Achieving energy label A has immediate and long-term benefits for landlords, as we emphasize in guest lectures on property management:
For non-independent dwellings: For a room measuring 20 m² (10 m² private + 10 m² shared), label A yields 0.65 points/m², or 13 points in total, while label G yields -3 points. This difference can increase the rent by tens of euros per month.
With the Affordable Rent Act (July 2024) and the national target of an average energy label B for social housing by 2030, now is the time to invest in sustainability. Homes with low labels risk rent reductions and declining value, while label A ensures:
Practical example: In a project in Utrecht, we improved energy labels from E to B, which increased WWS points and enabled mid-range rental prices. A further upgrade to label A would have yielded even more points and value.
Energy label A is a game changer for landlords who want to maximize their rental points and rental value. By investing in sustainability measures such as solar panels, insulation, and heat pumps, you can not only comply with the Affordable Rent Act, but also make your home more attractive and valuable.
Would you like to bring your rental properties up to energy label A and increase your WWS points? Contact us for a no-obligation consultation!
The difference lies mainly in the degree of insulation and the proportion of sustainably generated energy. An A label can be achieved with good insulation and an efficient installation. For A+++, more is needed: a large proportion of the energy must be generated sustainably, for example with solar panels and a heat pump.
The energy label is determined based on the fossil energy consumption of the home, expressed in kWh/m² per year. For an A label, this value is between 105 and 160 kWh/m² per year. With good insulation, an A label is easily achievable. Homes built after 1991 often already have sufficient basic insulation to fall into this category. Solar panels are therefore not necessarily required to achieve an A label.
Practical experience – reliable energy expertise and results-oriented collaboration
We help property owners become more sustainable through energy labels, WWS advice, and customized reports.
For housing associations, investors, municipalities, and anyone who wants to make their real estate more sustainable.
It shows how many points your home is worth and how you can increase the rental value in a smart way.
Rates starting at €250 and delivered within 5 business days, depending on the type of home.

An energy-efficient home is not only good for the environment, but also for the wallets of landlords and tenants. A home's energy label plays a crucial role in the Housing Valuation System (WWS), which determines how many rental points a home receives and, therefore, the maximum rent. A home with an A energy label can earn significantly more points than a home with a lower label, such as E, F, or G, which directly affects the rental value. In this blog, we delve into the influence of the energy label on rental points, how you can achieve label A, and why this is a smart investment for landlords. These insights are based on practical experience with sustainability and WWS optimization, as shared in guest lectures on property management.
The energy label indicates how energy efficient a home is, from A++++ (very efficient) to G (very inefficient). Since the introduction of the new energy label on January 1, 2021, as laid down in the guidelines of the national government, the label carries more weight in the WWS. A higher energy label means more WWS points, which leads to a higher maximum rent. This is particularly relevant for landlords of independent and non-independent homes, such as apartments or rooms.
Example: An independent 50 m² home in Rotterdam with energy label F (-9 points) can achieve a point increase of 46 points when upgraded to label A (+37 points), which can increase the rent by hundreds of euros per month.
Improving an energy label to A requires targeted sustainability measures that optimize a home's energy performance. Here are the most effective steps, as often discussed in guest lectures on property management:
Practical example: In a project in Rotterdam, we transformed 40 homes from energy label E/F to A by combining solar panels, insulation, and heat pumps. This resulted in a point increase of +52 per home (including label and other improvements), bringing the homes to private sector status (187+ points).
Tip: Take advantage of subsidies such as the Sustainable Energy Investment Subsidy (ISDE) and the Rental Property Sustainability Subsidy (SVOH) to reduce investment costs. In the Rotterdam project, subsidies reduced the costs from €17,500 to €13,160 per home, with an ROI of 18%.
Achieving energy label A has immediate and long-term benefits for landlords, as we emphasize in guest lectures on property management:
For non-independent dwellings: For a room measuring 20 m² (10 m² private + 10 m² shared), label A yields 0.65 points/m², or 13 points in total, while label G yields -3 points. This difference can increase the rent by tens of euros per month.
With the Affordable Rent Act (July 2024) and the national target of an average energy label B for social housing by 2030, now is the time to invest in sustainability. Homes with low labels risk rent reductions and declining value, while label A ensures:
Practical example: In a project in Utrecht, we improved energy labels from E to B, which increased WWS points and enabled mid-range rental prices. A further upgrade to label A would have yielded even more points and value.
Energy label A is a game changer for landlords who want to maximize their rental points and rental value. By investing in sustainability measures such as solar panels, insulation, and heat pumps, you can not only comply with the Affordable Rent Act, but also make your home more attractive and valuable.
Would you like to bring your rental properties up to energy label A and increase your WWS points? Contact us for a no-obligation consultation!
Practical experience – reliable energy expertise and results-oriented collaboration

We help property owners become more sustainable through energy labels, WWS advice, and customized reports.
For housing associations, investors, municipalities, and anyone who wants to make their real estate more sustainable.
It shows how many points your home is worth and how you can increase the rental value in a smart way.
Rates starting at €250 and delivered within 5 business days, depending on the type of home.