Construction of the public areas at the Offenbach Innovation Campus gets underway
26.05.2025 – Since the beginning of April, the development plan has provided legal certainty as to where roads and paths will run on the Innocampus in future. The city-owned INNO GmbH actually wanted to be able to start awarding construction contracts immediately on the day the plan became legally binding. However, at the beginning of March, the general planner who had been commissioned for this purpose up to that point unexpectedly resigned due to a lack of staff. INNO reacted immediately and is now making progress.
Following the termination, the award procedure for a new general planner was initiated immediately. Following the evaluation, the engineering company Schüssler-Plan was commissioned with the further general planning for the Innovation Campus on March 24. The office will also be responsible for supervising the construction of the public areas on the Innovation Campus. INNO has now been able to set the deadline for the submission of the necessary tenders for the upcoming development measures on the INNO site on May 7, 2025 together with the newly commissioned general planner. Construction work on the final development measures is expected to start in the third quarter of 2025.
"What sounds very technical will have highly visible effects both for the companies located in the area and for the citizens once all the procedures have been completed: The core of the construction services now to be awarded are not only underground sewers, but subsequently also the so-called "innovation strip" above ground. This is the name given to the avenue that will be the main development axis for the site with a connection to Mainstrasse in the north at the end of 2026 and a major junction with Mühlheimer Strasse in the south at the end of 2027," says Lord Mayor Dr. Felix Schwenke.
Lord Mayor Dr. Felix SchwenkeCompletion in its final form of public development is scheduled for 2027. "Almost 140 new trees are planned in the "innovation strip" section alone. That will be a big difference compared to before, when the area was completely sealed
The 36-hectare former Clariant site, the largest contiguous inner-city development area in the city of Offenbach, is being developed into an attractive location for future-oriented companies. The municipal council and city council approved the resolution on the site's statutes in March, making the development plan legally binding. This means that there is now also a legal basis for the specific location and construction of the new public sewers, roads and trees. This could not be started before. The situation was different with the building permits for Samson AG. These could be granted by the city in advance of the development plan because the private building plot itself was already adjacent to the surrounding public development areas and therefore met all the approval requirements. The main aim of the city and Lord Mayor Schwenke is to create an innovation campus on the 36-hectare site, which has been vacant for around ten years, as an interface between business and innovation with new, highly qualified jobs.
"Historic opportunity for Offenbach"
"The Innovation Campus is of particular importance to us in terms of economic policy," emphasizes Mayor Schwenke. "It offers a historic opportunity, and that's no exaggeration. With the establishment of Samson AG, we are bringing large-scale industry back to Offenbach for the first time in decades, as the construction activities on site impressively demonstrate. And with BioSpring, a major company in the highly crisis-resistant biotechnology sector is coming to Offenbach for the first time. When BioSpring has also built its new production facilities, more people will be working there than in the heyday of the chemical industry in the 1970s," explains Schwenke, Head of Economic Affairs and Lord Mayor of Offenbach. "The business park combines competitive production and innovative products from both industry and biotechnology. At the end of the day, there is a real opportunity for long-term growth. This growth trend is already evident today with just over 52,000 jobs in Offenbach - that's more than 50,000 jobs for the first time in 30 years. This growth in Offenbach is happening in the middle of a recession in Germany."
The owner of the former Clariant site is INNO Innovationscampus GmbH & Co KG, a real estate company of Stadtwerke Offenbach, which is developing and marketing the site together with its sister company OPG Offenbacher Projektentwicklungsgesellschaft mbH on behalf of the city.
This construction was a strategic decision, as OPG had also successfully taken on this task for the former Offenbach industrial port - for the revitalization of which it was awarded gold in the New Urban Quarter category by the German Sustainable Building Council. Now this expertise is flowing into the next mega-project for a city in transition.
Sustainable concepts for mobility and rainwater
"We have been commissioned by the City of Offenbach to develop the site on the basis of the realization contract and development plan," reports Božica Niermann, INNO Managing Director and Head of the Office for Economic Development and Real Estate. "The contract contains all the necessary regulations for the development of the project, such as the framework redevelopment plan, mobility, green and rainwater concept. The quality of life in the public areas, the permeability of the district, connections to the adjacent districts and to the Main also play an important role here." The thoroughfare, including cycle infrastructure, is being expanded with north-south and east-west connections, and the Innovation Campus is also well connected to public transport.
The water purified in the groundwater remediation plant is discharged into the River Main, and investigations are currently underway to determine whether the purified water can be used to irrigate public green spaces in Offenbach, for example. There is an innovative concept for rainwater. The requirements in the framework remediation plan rule out direct infiltration in order to avoid groundwater recharge on the partially contaminated site. Nevertheless, private and public green spaces are to be used for "rainwater management": Among other things, this involves collecting the water in cisterns, allowing it to run off again in a targeted manner or using it as irrigation water. On private properties, green roofs are planned wherever possible, unless they are excluded by other regulations, and solar panels should also be installed wherever possible. In public spaces, trees in integrated infiltration trenches collect the water. These measures contribute to Offenbach becoming a "sponge city". In this way, the natural water cycle is also more closely integrated into urban planning.
Lots of greenery and an almost CO₂-neutral energy supply
If rainwater remains in the area for as long as possible, cooling effects can also be achieved - in line with the climate concept. The climate report states that the area is currently heating up due to its high level of sealing and that the new development can counteract this with simple measures: For example, the innovation strip and other streets are to be greened to support the formation of cold air. In total, more than 200 additional trees will provide shade after the development measures. Existing basements will continue to be used where possible to store rainwater and contribute to cooling. Sustainability is also a focus in other areas on the innovation campus: land recycling on the former industrial wasteland avoids new sealing in the city and region. In addition, the connection to the district heating network directly on site ensures that the energy supply can be almost CO₂-neutral. Samson AG is also contributing to the goal of reducing CO₂ emissions and is planning to use photovoltaics and electrical energy storage systems to make production as CO₂-free as possible.
State-of-the-art key technologies settle here
The fact that progress is already being made on many levels has long been visible on site: Samson AG began work on its new company headquarters on the Innovation Campus at the end of 2023 - the electronics production facility of the global industrial company in the field of measurement and control technology is scheduled to go into operation there in the fall of 2025, with full completion planned for the end of 2026. With its "factory of the future", the company is investing around 400 million euros in buildings, machines and systems. According to Samson, this represents one of the largest privately financed investments in industrial production in Germany.
"The master plan originally outlined a smaller-scale innovation area. After we succeeded in reaching an agreement with Samson AG to relocate its headquarters to Offenbach and acquire 14.3 hectares of land here, we had to virtually start our planning from scratch again from 2021 onwards for this pleasing reason," explains Offenbach's Lord Mayor. "Municipalities normally spend two to three years preparing the planning for such a site. Only then do they start marketing the previously fixed areas. In order to be successful, we have done everything differently than usual here. We first marketed the sites that best suited the companies and then planned them. For example, the two building applications for the Samson plant were each approved by the city in just 10 weeks, so that they were able to start implementing their project as quickly as possible. To ensure that this works, we have also promised that all of the companies' projects, above all Samson AG, which will be completed first, will be able to operate and reach their plant with us at any time. We are keeping this promise by creating interim closures," says Mayor Schwenke.
Completion of the final stage of the public development measures, which will then also include access to the innovation strip for the public, is planned for December 2027.
The biotechnology company BioSpring is also planning to build a high-tech production facility and other production units on the innovation campus, which will create up to 1,500 new jobs when completed. Planning for the first construction phase is currently being driven forward at full speed. In 2025, the company intends to submit the BImSch application (an application under the Federal Immission Control Act) to the regional council for the construction of the first production facility. In total, the company has acquired almost 4 hectares of land on the Innovation Campus. This means that two modern key technologies are settling in Offenbach.
Development measures have priority
Those responsible agree: the implementation of the upcoming development measures on the Innovation Campus have absolute priority until the complete relocation of Samson is completed, probably by the end of 2026. The work during the new construction activities - and not before, as is usually the case - is of essential importance for the site and the entire city. Schwenke and Niermann are convinced: "We will find good solutions in the interests of everyone involved." The city of Offenbach is working closely with Samson to play its part in this courageous entrepreneurial success story. Just in time for Samson's planned start of production in Offenbach this fall, temporary developments from June 30 will ensure the accessibility and supply and disposal of the Samson AG site.
In the future, the site, which used to be hermetically sealed, will also be made accessible to the public at other points. "In order to plan this safely on a former chemical site, we need a lot of capacity that is still tied up elsewhere on the Innovation Campus," says the mayor, making it clear that things will happen step by step and not all at the same time. Therefore, for pure capacity reasons, further planning, such as for the Grüner Haus and the Dreibogenhalle as well as for the planned Niederwiesen, can only be pushed ahead after Samson has moved and the Innovation Belt has been completed. "The timetable for this will be made when the development priority is successful," says Schwenke.
The former bathhouse is a partial exception: It currently houses the Parkside studios as an important temporary cultural use as well as smaller commercial units. In order to preserve the existing building and maintain its use, a partial roof refurbishment is planned for 2025. This expressly does not mean a comprehensive refurbishment, for which no funds have been budgeted. For capacity and financial reasons, it is exclusively about maintaining a functional substance. With its wet rooms, the bathhouse is a relic from the old days and illustrates that the chemical industry was at home in the east of Offenbach for more than 100 years, says Schwenke: "Now the site stands, both real and symbolic, for the city's resurgence from a long economic valley: "We are developing the new heart of industry in Offenbach here."