- managing real estate investment -

More than 30 years' experience – for your investment in the future


- managing real estate investment -

More than 30 years' experience – for your investment in the future


- managing real estate investment -

More than 30 years' experience – for your investment in the future


- managing real estate investment -

More than 30 years' experience – for your investment in the future


- managing real estate investment -

More than 30 years' experience – for your investment in the future


- managing real estate investment -

More than 30 years' experience – for your investment in the future


- managing real estate investment -

More than 30 years' experience – for your investment in the future

Managing real estate investment

More than 30 years' experience – for your investment in the future.

German and international investors rely on Calliston’s real estate expertise. We offer experience, reliability and integrity – values that are critically important in the field of property investment.

Calliston was founded by Trammell Crow in 1974, and took its present form following an MBO in the mid 1980s. We are proud to look back on more than 30 years' business success. We were the first to introduce commercial and business park concepts in Germany, and have developed over 1 million sqm of office and commercial space. Almost all our properties were speculatively developed. We achieved large increases in value through farsighted planning.

Decades of successfull projects

We have developed and managed commercial property with a capital value exceeding 1.5 billion euros. Discover a selection of our national and international real estate projects:

Enhancing your investment returns

Calliston offers investment solutions which are both sensitive to market conditions and consistent with the requirements of the investors. Supported by a broad network of partners and service providers, our in-house expertise provides a one-stop service solution for investors in commercial property.

  • A strategy for high performance

    Our extensive knowledge and experience enables us to optimise the performance of our investors' portfolios. We advise our investors, represent them, and undertake comprehensive management of their property and tenants. Our services to investors include:

    → Strategic management: Acquisition and management of single assets and portfolios

    → Structuring and financial management: Co-ordinating a network of specialist advisors and service providers in the fields of taxation, accounting, legal services and finance

    → Systems management: Operating superior information systems and analyses and offering comprehensive and accurate financial controlling and reporting of assets and portfolios

    → Portfolio and asset management: Repositioning of assets and portfolios to ensure optimal results

  • See opportunities, seize opportunities

    Since 1974 we have helped investors acquire and develop office, service and logistics properties, all the way from the search for suitable land, through construction of buildings, to the conclusion of lease agreements. We apply the experience gained from more than 70 projects to recognise new investment opportunities and to translate them into success. Our services to investors include:

    → Comprehensive due diligence

    → Analysis of the market

    → Development of a project concept and strategy

    → Coordination and management of all aspects of the project: environmental, planning, construction, legal, tax, leasing etc.

    → Profitability calculations, project budgets, financial controlling

    → Subcontracting and supervision of construction work

    → Lease coordination

  • Changing for the best

    A property must respond and adapt to the market's changing demands. For this reason, buildings and their leasing structures need regular review, and where necessary modification. We keep a constant eye on the requirements of tenants and their local business environment, enabling us to reposition buildings advantageously. Our services to investors include:

    → Market analysis

    → Monitoring of the business environment

    → Agreeing and implementing a strategy: lease extensions or new tenancies, renovation, refurbishment or conversion

    → Coordination with real estate agents

    → Negotiating lease agreements with prospective tenants

    → Managing the tenant relationship

In good hands at Calliston

More than 400 companies have already been satisfied users of the properties we have developed, including:

  • Nokia
  • L’Oreal
  • Techem
  • Sun Microsystems
  • Lufthansa
  • Pepsi
  • General Electric
  • Siemens
  • Allianz Versicherung
  • Celanese
  • Bosch
  • Hudson Advisors
  • Lone Star
  • AHBR Bank
  • Jones Lang LaSalle
  • Wincor Nixdorf
  • Casio
  • R+V Versicherung
  • Konica Minolta
  • Deutsche Bahn
  • IBM
  • Energizer
  • NEC
  • SMS Demag
  • UPS
  • DHL
  • Tomra Systems
  • Deutsche Rück

Get in touch with us

  • How to reach us:

    Calliston GmbH

    Oberkasseler Str. 26

    40545 Düsseldorf



  • Imprint

    Calliston GmbH

    Oberkasseler Str. 26, 40545 Düsseldorf

    Phone: 0211.585860-0

    Fax: 0211.585860-13


    General Managing: Karl G. Homberg

    Trade Register: Amtsgericht Düsseldorf

    Register No.: HRB 4334

    VAT-ID: DE 10357170221

    All texts, photos, and elements of design included in this website are – unless otherwise stated – copyrighted by Calliston GmbH. Any use exceeding the strict copyright limits require the prior written consent of Calliston GmbH and is, if such consent has not been priorly obtained, unlawful.

    Privacy policy

    The responsible person in terms of data protection laws, in particular the EU General Data Protection Regulation (DSGVO), is:

    Karl G. Homberg (contact details as above)

    Your data subject rights

    You can exercise the following rights at any time using the contact details provided for our data protection officer: Information about your data stored by us and its processing (Art. 15 DSGVO), correction of incorrect personal data (Art. 16 DSGVO), deletion of your data stored by us (Art. 17 DSGVO), restriction of data processing if we are not yet allowed to delete your data due to legal obligations (Art. 18 DSGVO), objection to the processing of your data by us (Art. 21 DSGVO) and data portability if you have consented to the data processing or have concluded a contract with us (Art. 20 DSGVO).

    If you have given us consent, you can revoke this at any time with effect for the future.

    You can lodge a complaint with a supervisory authority at any time, e.g. the competent supervisory authority in the federal state of your residence or the authority responsible for us as the controller.

    A list of the supervisory authorities (for the non-public sector) with address can be found at:

    Collection of general information when visiting our website

    Type and purpose of processing:

    When you access our website, i.e. when you do not register or otherwise submit information, information of a general nature is automatically collected. This information (server log files) includes, for example, the type of web browser, the operating system used, the domain name of your internet service provider, your IP address and the like.

    In particular, they are processed for the following purposes: Ensuring a smooth connection setup of the website, ensuring a smooth use of our website, evaluating system security and stability as well as for optimising our website.

    We do not use your data to draw conclusions about your person. Information of this kind is statistically evaluated anonymously by us, if necessary, in order to optimise our website and the technology behind it.

    Legal basis and legitimate interest:

    The processing is carried out in accordance with Art. 6 (1) lit. f DSGVO on the basis of our legitimate interest in improving the stability and functionality of our website.


    Recipients of the data may be technical service providers who act as order processors for the operation and maintenance of our website.

    Storage period:

    The data is deleted as soon as it is no longer required for the purpose for which it was collected. This is generally the case for data used to provide the website when the respective session has ended.

    Provision prescribed or required:

    The provision of the aforementioned personal data is neither legally nor contractually required. However, without the IP address, the service and functionality of our website cannot be guaranteed. In addition, individual services and services may not be available or may be restricted. For this reason, an objection is excluded.

    Withdrawal of consent:

    No option for a simple opt-out or blocking of data transmission is currently offered by the provider. If you wish to prevent tracking of your activities on our website, please revoke your consent for the relevant cookie category or all technically unnecessary cookies and data transfers in the cookie consent tool. In this case, however, you may not be able to use our website at all or only to a limited extent.

    SSL encryption

    To protect the security of your data during transmission, we use state-of-the-art encryption procedures (e.g. SSL) via HTTPS.

    Information about your right of objection according to Art. 21 DSGVO. Individual right of objection

    You have the right to object at any time, on grounds relating to your particular situation, to the processing of personal data relating to you which is carried out on the basis of Art. 6(1)(f) DSGVO (data processing on the basis of a balance of interests); this also applies to profiling based on this provision within the meaning of Art. 4 No. 4 DSGVO.

    If you object, we will no longer process your personal data unless we can demonstrate compelling legitimate grounds for the processing which override your interests, rights and freedoms, or the processing serves to assert, exercise or defend legal claims.

    Recipients of an objection

    Karl G. Homberg (contact details as above)

    Changes to our data protection policy

    We reserve the right to adapt this data protection statement so that it always complies with the current legal requirements or in order to implement changes to our services in the data protection statement, e.g. when introducing new services. The new data protection statement will then apply to your next visit.

    Questions to the data protection officer

    If you have any questions about data protection, please send us an e-mail.