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Systematic development

To develop and improve our sustainability initiatives, Castellum continually and systematically analyses both positive and negative impacts of the operations on its business environment from the perspective of the economy, the environment, society, and human rights.

People sitting around a table in a greenhouse.

Castellum has an impact on, and is impacted by, various stakeholder groups. The stakeholders who have been identified as the most central to Castellum’s operations are:

  • Tenants
  • Owners
  • Lenders
  • Suppliers
  • Employees


Castellum is routinely in dialogue with the company’s stakeholders to facilitate surveying and adapting key sustainability issues to requirements and expectations in its business environment. Stakeholder involvement allows Castellum to better understand both which sustainability issues the stakeholder groups regard as material in relation to Castellum, and the significant impact that various sustainability issues have or could have on the business environment and specific stakeholder groups. Dialogue is held in various situations and through various channels, and issues are routinely addressed. In addition to the routine dialogue, recurring interviews are held with selected stakeholders who are experts in sustainability in the property industry or are considered as having a major impact on – or are impacted by – Castellum’s operations.

Three people on a roof terrace.

Materiality analyses

Castellum routinely conducts materiality assessments to identify, prioritise and establish the company’s material sustainability issues. The latest materiality assessment was conducted in 2021. In 2023, Castellum reviewed the assessment and concluded that the issues identified remained the most relevant for the company.


The analysis is based on Castellum’s various sustainability issues, stakeholder dialogues, business intelligence, and industry analyses, and is intended to assess what significant impact the different issues have on the business environment from the perspective of the economy, the environment, and social and human rights. The analysis also takes the impact of changes in the business environment on the company and its various sustainability issues into consideration, and also looks at how these in turn impact Castellum financially over both the short and long term.

Materiality matrix

The results of Castellum’s materiality assessment are presented in a matrix. All sustainability issues in the matrix are considered important for the company, but they are evaluated from the perspective of low, moderate or high relevance and impact, respectively. The colour-coding of the sustainability issues indicates which of Castellum’s four overall sustainability areas the specific issues fall under. Vertical text: Relevance for stakeholders in relation to Castellum Horizontal text: Castellum’s impact on its business environment from a perspective of the economy, the environment, society and human rights.

Castellum’s material sustainability issues

  1. Attractive workplace
  2. Offer successful and sustainable workplaces
  3. Healthy premises
  4. Environmental and climate risks
  5. Renewable energy
  6. Minimise climate impact
  7. Efficient use of resources
  1. More sustainable building materials and installations
  2. Diversity and equal opportunity
  3. Partner with customers for increased sustainability performance (e.g. through waste management and green mobility)
  4. Sustainable financing
  5. Adapt the properties for climate change
  6. Develop local communities (e.g. through apprenticeships)


  1. Occupational Health and Safety
  2. Sustainability certification of buildings
  3. Ensure sustainable supply chains
  4. Increased circularity
  5. Biodiversity and ecosystem services
  6. Good business ethics and anti-corruption