About ST Inventar

ST Inventar is your specialist in the development, production, and delivery of high-quality interiors for the education sector. We have been doing this since 1950 - So you probably know us already because you yourself sat in our chairs at our tables in the classroom, made smoke in one of our school kitchens, or were creative in one of our woodworking rooms.

Even though many years have passed, we still value traditional values such as quick delivery, high-quality products, and not least personal and competent advice. At the same time, we focus on keeping up with developments so that you can always get furnishings that meet your demands and wishes.

The many years of experience mean that you get exactly what it takes to create innovative and inspiring spaces with attention to detail.

Through our own production and partnerships, you get furnishings and solutions for both renovation and new construction - of course, always with a focus on service, design, ergonomics, and durability. You get interiors that meet applicable legal requirements for safety and the environment, as well as the Danish industry guidelines on risk factors in education.

Get a strong partner

Are you looking for a solid partner with many years of experience and your facilities in focus? Then you have landed in the right place. ST Inventar is the safe choice.

With professional advice, we ensure that you get a nice and practical interior solution that can last for many years to come - And even at Denmark's perhaps best prices.

Today, we have furnished more than 50,000 spaces - and we are proud of that! Will your project be our next? Then contact one of our 60 dedicated employees in Denmark, Norway, and England at phone 9737 1188 or email info@stinventar.dk.

The story of ST Inventar

Our story goes back to 1949, when Christian Søndermark founded Søndermarks Møbelfabrik in Tarm. The idea was to produce tables and chairs for schools in wood.

Just three years later, production of fixed furniture began, and from there the development progressed rapidly. With a particular focus on specialized classrooms, strong competencies, and an extensive reference list, we are today a market leader in total solutions for education.

We continue to develop the best furnishing solutions for the education sector, and today ST School Furniture is also represented in schools in Norway and England.

1950 - Søndermarks Møbelfabrik is founded by Christian Søndermark.

1955 - School furniture and school inventory become the primary focus, which we install ourselves in school kitchens, physics rooms, woodworking classrooms, teacher's lounges, etc.

1963 - The existing factory had become too small after significant development. A new factory of 1,600 m² was built.

1973 - Founder Chr. Søndermark retires, and son-in-law Mogens Jørgensen, who had been with the company since 1953, takes over.

1983 - New director and later co-owner Knud Pedersen joins the company.

1993 - The company name is sold to a trading company consisting of four employees: Knud Pedersen, Knud Erik Strandbæk, Aksel Poulsen, and Bent Nielsen. This trading company then purchased the products from the production company led by Mogens Jørgensen.

1994 - The four co-owners also take over production. Sales assistants Kim Dengsø Nielsen, Tarm, and Christen Jespersen, Lystrup, join as co-owners when Bent Nielsen retires, and Knud Erik Nielsen sells his share.

2003 - ST School Furniture becomes part of Continental Investment Company A/S, while continuing to operate as an independent company.

2008 – ST School Furniture strengthens its market position through partnerships with architects and main contractors. The focus is on integrating furniture as an active part of the overall learning strategy of the building rather than just a delivery.

2014 – Increased focus on sustainability and total economy. ST develops solutions with long lifespans and low maintenance, reducing operating costs for customers.

2018 – ST expands its portfolio to also include custom-designed solutions for nursing homes and dormitories – focusing on safety, ergonomics, and flexibility.

2021 – Sustainability becomes a central strategic focus. ST works systematically with material selection, certifications

2023 – ST establishes itself as a total supplier of furniture environments – from idea and concept development to production, delivery, and installation.

2026 – ST changes its name from ST School Furniture to ST Inventar. Our DNA remains quality and customer-tailored solutions. The name change reflects our development, our innovative strength, and the growth we are already well underway with. We strengthen our position – and open the door to new and broader collaborations.

2026: ST Inventar acquires the furniture and inventory company Thorsø A/S (market leader in, among others, the efterskole segment), as part of a strategic investment to strengthen its position in
furnishing solutions for schools, institutions, and other professional environments in a market where the demand for cohesive furnishing solutions and robust quality solutions is increasing. Read more about Thorsø furniture here: www.thorsoeinventar.dk