John Mattson has received a positive planning decision from the City of Lidingö to assess the development of a new residential care home (SÄBO) on the property Sjöjungfrun 2 in Larsberg, Lidingö. The project comprises approximately 100 care places and represents a strategic step in the company’s ambition to increase the share of self-developed projects and broaden its property portfolio.
The proposed development comprises a five-storey building with two care units per floor, with the option to include LSS housing unit at basement level. The project is planned for the northern part of the property, primarily on land that is already developed. The location in Larsberg offers proximity to nature, water, public transport and local services.
John Mattson intends to own and manage the property on a long-term basis. The project forms part of the company’s return to new production, with the objective of gradually increasing the volume of self-developed properties and a long-term target of construction starts of approximately 250 homes per year. The initiative also supports the company’s strategy to complement its core residential rental portfolio with additional property segments characterised by strong societal value and stable, long-term cash flows.
This project is an important step in our strategy to grow through new production while further diversifying our property portfolio. A residential care home in this attractive location contributes both to societal benefit and long-term, stable earnings. In addition, the development will strengthen Larsberg by contributing to a more vibrant and safe local environment through increased activity throughout the day and night,” says Per Nilsson, CEO of John Mattson.
The City of Lidingö has assessed that the site is well suited for a residential care home and that the project can be reviewed within the framework of a detailed development plan process. The detailed development plan is expected to be adopted at the earliest in 2028.
The positive planning decision means that the municipality intends to initiate the planning process; however, it does not constitute a final approval of the project. Within the detailed planning process, factors such as design, placement, environmental impact and the overall need for residential care facilities will be evaluated.
Lidingö, 13 April 2026
John Mattson Fastighetsföretagen AB (publ)
For further information, please contact:
Per Nilsson, John Mattson
072-224 90 28, [email protected]
Ludmilla Brandt, projektutvecklingschef, John Mattson
08-613 35 07, [email protected]
About John Mattson Fastighetsföretagen AB (publ)
John Mattson is a residential property company with 4,255 rental apartments as well as commercial premises in the Stockholm region: Lidingö, Sollentuna, Stockholm, Nacka and Upplands Väsby. As of 31 December 2025, the property value was SEK 14.5 billion. The focus of the company’s strategy is on property management, adding value, densification and acquisitions. Our vision is to create great neighbourhoods across generations. This means we make daily life easier for everyone through a holistic management perspective and close tenant contact, as well as by developing safe and attractive neighbourhoods and local communities. John Mattson’s share is listed under the symbol JOMA on Nasdaq Stockholm, Mid Cap. Read more at: johnmattson.se/in-english.
Published on February 12 2026
