Operations and property portfolio

Castellum’s business model is built on investing in and developing commercial premises managed by a decentralized and customer-focused organization. Castellum is focused on cash flow and only engages in activities with a minimal financial risk.

Castellum owns 552 properties in Sweden, Copenhagen and Helsinki, encompassing 3.8 million square meters of office and logistics space. Property locations range from city center sites to well situated working areas with good public transportation and services. Castellum works with a long-term perspective; its strategy for growth includes continually refining and developing its property portfolio by investing in new construction, expansions and reconstructions, as well as making new acquisitions. The purpose of the investments is to improve cash flow, thereby increasing the value of the properties. New projects are gradually added through acquisitions of both development properties and unutilized development rights.

Our operations comprise three different areas:

Property management

Through management, in close relationship with customers, that is built on good business conduct, sustainability and innovation, we enable our customers to reach their business goals.

Project development

Castellum will continually invest in existing portfolios and develop new portfolios, resulting in a quality shift to a more sustainable and stable portfolio, as well as increased earning power. In addition, Castellum will be an active player that promotes urban development and growth.


Continual development of Castellum’s property portfolio in order to strengthen the company’s position as the leading player in Nordic growth cities.


Welcome to Castellum’s world. We are one of Sweden’s largest property companies for commercial properties. Every day more than 250,000 people go to work in our properties, and make a difference. In our properties, deals are made, goods and flows are optimized and transported to end consumers, and people feel at home in workplaces where they can grow and develop.