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July 2, 2025
Making an apartment more sustainable is a smart investment for landlords and homeowners. Not only does it increase the value of your home and the rental points via the Housing Valuation System (WWS), but it also reduces energy costs and contributes to a more sustainable future. In 2025, with stricter regulations such as the Affordable Rent Act and the target of energy label B for social housing, sustainability will be more relevant than ever. In this blog, we discuss how you can make an apartment more sustainable, what costs are involved, and what benefits this brings, such as higher WWS points and CO2 reduction. These insights are inspired by practical experiences shared in guest lectures on property management.
Making an apartment more sustainable offers multiple advantages, both financially and socially:
Example: A 50 m² apartment in Utrecht with energy label F (-9 points) can earn 46 extra WWS points when upgraded to label A (+37 points), which increases the rent by hundreds of euros per month.
Making an apartment more sustainable requires targeted measures that improve energy performance, as often discussed in guest lectures on property management. Here are the most effective options:
Total costs: For an average apartment of 50 m², we estimate the costs at €21,000–€31,000 for an upgrade from label E/F to A, depending on the condition of the property and the measures chosen.
Subsidies: Take advantage of the Sustainable Energy Investment Subsidy (ISDE) (€1,500 for heat pumps) and the Rental Property Sustainability Subsidy (SVOH) (up to €3,000 for insulation). These can reduce costs by 20-25%, as in a Rotterdam project where we reduced the cost per home from €17,500 to €13,160.
The investment in sustainability pays for itself through higher rents, increased property values, and lower energy costs. Here is an overview of the benefits, based on practical experience:
Example: In a Rotterdam project, we upgraded apartments from energy label E to A, with an investment of €13,160 after subsidies. The rent increased by €400/month, resulting in an annual income increase of €4,800 and recouping the investment in less than 3 years.
With the Affordable Rent Act (July 2024) and the target of energy label B for social housing by 2030, sustainability is essential. Apartments with low labels (E, F, G) risk rent reductions by the Rent Assessment Committee and falling market value. Sustainability to label A offers:
Practical example: In an Amsterdam project, we upgraded an apartment from label F to A, which increased the WWS points by 46 and brought the rent to mid-range. This increased the market value by €45,000.
Would you like to make your apartment more sustainable and increase its rental value? Contact us for a no-obligation consultation!
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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
Making an apartment more sustainable is a smart investment for landlords and homeowners. Not only does it increase the value of your home and the rental points via the Housing Valuation System (WWS), but it also reduces energy costs and contributes to a more sustainable future. In 2025, with stricter regulations such as the Affordable Rent Act and the target of energy label B for social housing, sustainability will be more relevant than ever. In this blog, we discuss how you can make an apartment more sustainable, what costs are involved, and what benefits this brings, such as higher WWS points and CO2 reduction. These insights are inspired by practical experiences shared in guest lectures on property management.
Making an apartment more sustainable offers multiple advantages, both financially and socially:
Example: A 50 m² apartment in Utrecht with energy label F (-9 points) can earn 46 extra WWS points when upgraded to label A (+37 points), which increases the rent by hundreds of euros per month.
Making an apartment more sustainable requires targeted measures that improve energy performance, as often discussed in guest lectures on property management. Here are the most effective options:
Total costs: For an average apartment of 50 m², we estimate the costs at €21,000–€31,000 for an upgrade from label E/F to A, depending on the condition of the property and the measures chosen.
Subsidies: Take advantage of the Sustainable Energy Investment Subsidy (ISDE) (€1,500 for heat pumps) and the Rental Property Sustainability Subsidy (SVOH) (up to €3,000 for insulation). These can reduce costs by 20-25%, as in a Rotterdam project where we reduced the cost per home from €17,500 to €13,160.
The investment in sustainability pays for itself through higher rents, increased property values, and lower energy costs. Here is an overview of the benefits, based on practical experience:
Example: In a Rotterdam project, we upgraded apartments from energy label E to A, with an investment of €13,160 after subsidies. The rent increased by €400/month, resulting in an annual income increase of €4,800 and recouping the investment in less than 3 years.
With the Affordable Rent Act (July 2024) and the target of energy label B for social housing by 2030, sustainability is essential. Apartments with low labels (E, F, G) risk rent reductions by the Rent Assessment Committee and falling market value. Sustainability to label A offers:
Practical example: In an Amsterdam project, we upgraded an apartment from label F to A, which increased the WWS points by 46 and brought the rent to mid-range. This increased the market value by €45,000.
Would you like to make your apartment more sustainable and increase its rental value? Contact us for a no-obligation consultation!
Practical experience – reliable energy expertise and results-oriented collaboration
I have experienced Renewable Partners as a reliable and professional party in the field of sustainable energy. They think along well, are transparent in their communication, and deliver customized solutions that really meet the need.
Professional and readily available for questions. I am very satisfied with the service and can recommend the company. Kind regards,
While my energy label doesn't matter at all, new residents are going to renovate the entire house, Nik has still made a thorough and clear report of my old farmhouse. TOP job. Thanks
The energy label inspector is a highly skilled professional who knows his trade. We were helped well and quickly with his advice. The reactions of this company are praising the price, the lowest, and the service, downright TOP!
The recording was done carefully. All documents and construction dimensions were checked/recorded by the advisor Ronan van der Loo. And good advice was given. He finished the recording within 2 hours.
