Gouda eases rules for energy-efficient upgrades to historic monuments
Owners of Gouda’s 1,200 monuments can now more easily install solar panels and insulate windows, cutting energy costs while preserving heritage. The new rules simplify approvals, helping residents contribute to the city’s climate-neutral goal by 2040.
| Key Data Point | Details |
|---|---|
| Number of monuments | 1,200 in Gouda |
| New regulation effective | March 2026 |
| Key changes | Easier solar panel approvals, streamlined window insulation guidelines |
| Zones for solar panels | Zone A: Historic heart (panels not visible from street) |
| Zone B: Other areas (panels allowed under conditions) | |
| Processing time | Faster administrative approvals for insulation |
| Climate goal | City aims for climate neutrality by 2040 |
| Support for owners | Monument advisors at Omgevingsdienst Midden-Holland (ODMH) |
The municipality of Gouda oversees the preservation and sustainable development of its historic monuments, balancing heritage protection with modern energy efficiency goals. This regulation reflects its role in facilitating upgrades while ensuring compliance with national and local sustainability policies.
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Making monuments more energy-efficient made easier
Gouda is making it easier to make monuments more energy-efficient. For private owners, this means broader opportunities for installing solar panels and applying glass and window insulation. Gouda has around 1,200 such monuments.
This week, the college of mayor and aldermen adopted the new Heritage and Sustainability Regulation after the municipal council had already given its approval. The renovation of monuments and buildings within the protected cityscape will now be simpler and more feasible, while preserving historical values.
The previous (current) regulation was introduced in 2020. Gouda was one of the first municipalities in the Netherlands to implement such a regulation for monument owners. An evaluation by an external agency led to several recommendations, including easing restrictions and improving feasibility. The adjustments now in place were developed following discussions with residents, monument owners, experts, and the Heritage & Sustainability sounding board group, which also includes Energiecoöperatie Gouda.
Relaxation of rules
“We are opting for a phased approach,” says alderman Thierry van Vugt, responsible among other things for Heritage and the City Centre. “This means the relaxation of the rules initially focuses on areas where owners have the greatest need: installing solar panels and applying glass and window insulation.”
The current roof map, which often made solar panels impossible if they were visible from the street, will be replaced by a new zone map. The protected cityscape will be divided into two zones: Zone A, the historic heart of Gouda and the most important monuments, where solar panels must not be visible from the street; and Zone B, the remaining parts of the city centre, where solar panels may be visible from the street under certain conditions, provided they are well integrated into the cityscape.
With this new division, the municipality expects more applications for solar panels to be approved.
For glass and window insulation, new implementation guidelines will be introduced, based on those used in Leiden: simpler, more transparent, and easier to implement. If an application meets the guidelines, it can now be processed administratively without advice from the Environmental Quality Advisory Committee (AOK; better known as the aesthetics committee). Alderman Van Vugt: “This significantly speeds up processing time and provides greater clarity for owners.”
Significant gains to be made in usage
According to alderman for Sustainability Judith Sargentini, the updated regulation also contributes to the ambition of making the city climate-neutral by 2040. “Due to the long-term use of raw materials and construction products, monuments are inherently sustainable thanks to their age. However, their usage is not sustainable. There is still much to be gained. It is therefore excellent that making monumental buildings more energy-efficient is now easier. This way, we ensure that Gouda’s unique heritage is preserved and ready for the future,” says Sargentini.
Anyone wishing to make their monument more sustainable would do well to consult the monument advisors of the Omgevingsdienst Midden-Holland (ODMH). On the webpage about making monuments sustainable you can find more information about the new regulation.
Photo: Astrid den Haan