Is it allowed to build without mortar in Belgium as part of cultural heritage preservation?

Last updated on November 7, 2025

Yes. Belgium permits mortarless construction—known as dry stone building—within cultural heritage preservation projects. This practice is recognized under UNESCO’s Intangible Cultural Heritage framework and supported by regional heritage laws. Authorization from heritage authorities is required to ensure compliance with safety and conservation standards.

A Tradition Carved in Stone

Dry stone construction is not just a technique; it is a living tradition that has shaped European landscapes for centuries. In Belgium, this craft is part of a shared heritage acknowledged by UNESCO. Builders stack stones without mortar, relying on skill and balance to create enduring structures. From rural walls to terraced fields, these works reflect sustainability and artistry.

Belgium’s commitment to preserving this technique is evident in its heritage policies. Regional authorities maintain inventories of immovable heritage and allow traditional methods in restoration projects to safeguard authenticity. Dry stone building is permitted when it aligns with conservation principles and structural safety.

Legal Framework and Heritage Oversight

Belgium’s heritage protection system operates under regional legislation such as the Brussels Town Planning Code (CoBAT/BWRO) and the Flemish Immovable Heritage Decree. These laws require that any intervention on listed sites be reviewed by heritage authorities. The Royal Institute for Cultural Heritage (KIK-IRPA) provides technical guidance, emphasizing minimal intervention and respect for historical materials.

Projects using dry stone techniques typically undergo approval by expert committees like the Royal Commission for Monuments and Sites. This ensures that cultural authenticity does not compromise safety or environmental standards.

Why Dry Stone Matters Today

Dry stone construction offers ecological and cultural benefits. It uses local materials, reduces carbon footprint, and integrates naturally into landscapes. The technique also fosters community engagement, as knowledge is passed through apprenticeships and collaborative projects. In a world seeking sustainable solutions, this ancient craft resonates with modern priorities.

Practical Considerations

While heritage projects may embrace mortarless techniques, new residential or commercial buildings must comply with Belgian building codes and Eurocodes. These standards prioritize structural safety, fire resistance, and energy efficiency. Therefore, dry stone construction without mortar is generally limited to restoration, landscaping, or cultural initiatives—not mainstream housing.

Applicants planning such work should:

  • Confirm if the site is listed in the regional heritage inventory.
  • Obtain permits and expert approval from heritage authorities.
  • Ensure compliance with conservation and safety criteria.

Failure to follow these steps can result in permit denial or legal penalties.

Cultural Significance

Dry stone walls and terraces are more than functional—they are symbols of resilience and identity. In Belgium, preserving this craft means maintaining a dialogue between past and present, where heritage remains a living practice rather than a static relic.

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Sources

Art of Dry Stone Construction – UNESCO Intangible Cultural Heritage
https://ich.unesco.org/en/RL/art-of-dry-stone-construction-knowledge-and-techniques-02106
Ongoing

The legal inventory of immovable heritage – Brussels Town Planning Code
https://urban.brussels/en/articles/de-wettelijke-inventaris-van-het-onroerend-erfgoed-wordt-gepubliceerd-in-het-belgisch-staatsblad
2024-11-18

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