We are pleased to be part of the Marienhöfe construction project, working on behalf of Hines to implement affordable housing in Berlin. CollignonArchitektur is planning to build 880 apartments, commercial, retail, restaurant and daycare facilities on the approx. 10-hectare site in Berlin Tempelhof-Schöneberg. A local heating network secures the heat supply through waste heat from a neighbouring data centre and two large heat pumps being utilised for this purpose. The construction project will be implemented by GOLDBECK with completion scheduled for mid-2028.
At the Schlichtallee project in Berlin-Lichtenberg, 158 new apartments are currently being built. The basement levels are largely completed, and construction of the upper floors using timber-frame methods is gaining momentum. We wish the project team continued success in carrying out this special project.
The Karlsgärten combine modern working practices with sustainable construction in the heart of Berlin. An office building is being constructed near Potsdamer Platz, with a focus on resource efficiency and reducing CO₂ emissions. The structure of the existing building will be retained and supplemented by a timber-hybrid construction. We look forward to working with CA Immo and all other project stakeholders.
WE ARE AN OWNER-MANAGED ENGINEERING FIRM and see ourselves as a boutique firm offering bespoke solutions for our clients. We approach every project with a high level of commitment and passion – personally and closely. This trust forms the basis for a goal-oriented partnership and leads to client-specific and efficient results. Often over many years.
PROVIDING ADVICE AND SUPPORT DURING THE ACQUISITION PHASE is something we are deeply committed to. Do you have a plot of land, an existing property, or both? In addition to providing cost estimates, we offer a full range of consulting services to help you achieve your goals successfully. Our range of specialised planning, with ability to identify risks prior to purchase or in the early stages, will help you get your project off to a solid start.
PROPERTY MANAGEMENT entails responsibilities that extend beyond mere supervision of activities. We are committed to providing you with the best possible service. In addition to identifying and documenting any deficiencies, we place significant emphasis on the implementation of a positive documentation approach. Upon request you recieve documentation of the construction process including the location of individual recorded items in plans. All building condition reports are systematically prepared so they remain readable and understandble even years later. Ultimately, no one wants to have to search through thousands of construction site photos to find a defect that surfaces later! In addition to document management, our team handles all daily tasks related to the construction site, ensuring seamless coordination with our proven experience dating back to 1993.
OUR EXPERTISE covers a broad spectrum of real estate projects: Property management, industrial development, hotels, retail, gastronomy, residential, museums, logistics, transport and mixed-use buildings. Make the most of our expertise and the professional, results-oriented collaboration with our teams and other project participants. In collaboration with project developers, architects, and contractors, we construct buildings in a goal-oriented and timely manner.
SUCCESSFUL CONSTRUCTION MANAGEMENT requires effective real-time communication between all project stakeholders. Simultaneously, solid knowledge of cost management, HOAI (guidelines for calculating fees for architectural and engineering services) service phases, standards, and the real estate market is required. We combine strong communication skills and in-depth knowledge with a clear objective: to deliver a successful final product to our clients.
COST MANAGEMENT demands meticulous attention and a comprehensive overview. In the interest of our clients, we prepare a project cost calculation for cost groups 300 (Costruction) and 400 (MEP). We are happy to provide this service starting in HOAI service phase two as a cost estimate and continue further into phase three as a detailed cost calculation. Our continuously growing DSI cost database supports this process by providing up-to-date figures based on recent tender results. During phase eight, we place particular emphasis on transparency, thus enabling both ourselves and our clients to make essential decisions without delay and with complete information.
PRE-TENDER PREPARATION for us means clearly defining the required construction scope and the interfaces with other trades. Those with the necessary expertise from the outset, when preparing the bid documents, are better equipped to manage the highly complex processes on the construction site. Regardless of whether you are seeking a general contractor or prefer to award contracts in packages or separately, we are committed to addressing your business needs. We are able to support both approaches. We rely on 2D drawings from previous service phases or model-based evaluations to determine quantities and relevant information.
PARTICIPATION IN THE AWARDING PROCESS for us means working closely with the client to clarify the final technical aspects and prepare the contract award in a goal-oriented manner. During this phase we provide a consistent and comparable evaluation of the submitted bids. In all technical clarification discussions meetings our experienced team is happy to take the lead and ensures that all open questions are resolved efficiently. Finally, we present you with our recommendation for awarding the contract.
WORKING AT DIETE + SIEPMANN means teamwork. We are a cohesive team, committed to supporting one another in all aspects of our work to ensure the best possible outcomes for our clients. We have the right specialist to answer any questions you have about the execution of specific construction work. We use templates and guidelines that are continually revised.
Should there be any questions regarding our overall collaboration, we provide straightforward answers and are also willing to discuss them informally.
JOINING OUR TEAM at Diete + Siepmann means embarking on a new journey. The opportunity to become part of a cohesive and versatile team that is committed to ongoing development and enhancement through an internal training programme. We are continuously developing our expertise in classic technical skills and exploring new digital opportunities, with the goal of delivering optimal solutions for our clients.
We have been working with many of our employees for years and we inspire each other to evolve and develop. In our company, this process involves allocating specific tasks and roles, as well as providing opportunities for professional progress and growth. We are always open to questions or topics from our team, even outside of our daily work routine—while jogging, at a football competition, or over a cold drink outdoors. Would you like to join our construction management team and expand it? Then we look forward to recieving your application!
IN THE HEART OF THE RHINE REGION. The main headquarter of Diete + Siepmann is our office in Kaarst. Strategically located in Düsseldorf, we enjoy a prime position within North Rhine-Westphalia. The Ruhr region, Cologne and the Benelux countries are all within easy reach. The area’s accessibility is enhanced by its proximity to the A52 highway and comprehensive public transportation network. The rooms in the old town hall provide the perfect setting for focused and relaxed work.
Rathausstraße 3
41564 Kaarst
Phone +49 2131 979813
kaarst@diete-siepmann.de
Germany
AT THE HEART OF POWER. The address “Marienstraße 10” in Berlin-Mitte is a particularly central location. Directly nearby the government district of the German capital with the Spreebogen and Friedrichstraße station easily accessible on foot. Here we combine a prestigious address with urban life and a calm working atmosphere. You’ll find us—and a little style never hurts—in the building with the striking golden gate.
Marienstraße 10
10117 Berlin-Mitte
Phone +49 30 2756 2000
berlin@diete-siepmann.de
Germany
AT THE HEART OF ST. PAULI. In the office space at our Hamburg location on Budapester Straße, you can’t miss the fact that you are in one of the two main centres of Hamburg’s football scene, especially at the weekend. We work right next to the Millerntor Stadium, where FC St. Pauli play. Fortunately, it’s much quieter during the week, while still offering excellent transport links. Here, we have everything we need, great facilities and a really good work environment.
Budapesterstraße 47
20359 Hamburg
Phone +49 40 63270781
hamburg@diete-siepmann.de
Germany
IN THE HEART OF THE METROPOLIS. Our Frankfurt office is located in a dynamic environment, that combines economic vitality with international appeal. Situated in close proximity to the financial district, with excellent access to the main train station and downtown, we offer a prime location with urban energy, short distances, and a work environment that fosters both focus and collaboration. Located in a charming side street, you will find us in a building that immediately stands out with ist clear architectural style.
Opernplatz 14
60313 Frankfurt am Main
frankfurt@diete-siepmann.de
Germany
WE CONSIDER SUSTAINABILITY to be a matter of responsibility towards the environment, society and our industry. With the EcoVadis Sustainability Rating, we are committed to upholding the highest standards in the areas of the environment, labour practices, and ethical conduct. At the same time, as a supporting member of Immoebs e.V., we are committed to the development of young real estate professionals, with a view to actively supporting the next generation of experts in the field. This is how we combine economic success with sustainable progress, for a responsible future in the construction and real estate sectors.
