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Bundesimmobiliengesellschaft

Austria’s state-owned real estate company and central property provider for federal public services.

Last updated August 25, 2026

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Overview

Bundesimmobiliengesellschaft, commonly known as BIG, is an Austrian state-owned real estate company responsible for managing a substantial part of the Republic of Austria’s public property portfolio. Established by law in 1992, it was created to centralize and professionalize the administration of federal buildings that had previously been handled by several public construction and buildings administrations. Its remit covers the provision, development, operation, maintenance, renovation and disposal of real estate used by public institutions. BIG is the principal property partner for a wide range of Austrian federal functions. Its portfolio includes schools and universities, ministry and administrative buildings, courts, prisons, police facilities and other specialized public-sector properties. Rather than simply holding buildings as a passive asset owner, the company operates an internal landlord model: public bodies occupy BIG properties and pay rent, while BIG is responsible for maintaining the buildings, undertaking refurbishment, arranging new construction and, where appropriate, developing replacement facilities. This model was intended to make the cost of space more visible to government departments and encourage more efficient use of public buildings. The company is organized as a Gesellschaft mit beschränkter Haftung, or GmbH, and is wholly owned by the Republic of Austria. Its ownership and strategic role are closely connected to federal policy. A transfer of ownership would require a change to the legal framework governing the company. Although BIG operates in the real estate market and undertakes commercially structured development and management activities, its operations are restricted to Austria and its principal customer base is the Austrian public sector. BIG’s business combines several activities: leasing property to federal users, constructing new public facilities, modernizing existing buildings, maintaining and managing real estate, providing facility-management services, selling surplus buildings and land, and developing properties that may later be sold or used for private purposes. It also has responsibilities connected with the restitution, sale or compensation of certain properties confiscated from Jewish owners during the Nazi period and still held by the Republic of Austria. The company occupies a distinctive position in the Austrian property market because many of the facilities it manages are purpose-built assets with few direct substitutes. Federal schools, universities, prisons and courts require specialized buildings, and the public authorities that use them are therefore highly dependent on a reliable national property provider. BIG’s role is consequently both commercial and infrastructural: it manages real estate assets while supporting the continuity of education, justice, policing, administration and other public services. In this sense, the organization functions as a central real estate platform for the Austrian federal government rather than as a conventional consumer-facing property brand.

History

Bundesimmobiliengesellschaft was established in 1992 through Austrian legislation intended to reorganize the ownership and administration of federal real estate. Before BIG was created, public buildings were managed through a fragmented institutional structure. The Federal Buildings Directorate in Vienna handled responsibilities in the capital, while Federal Buildings Administrations performed comparable functions in the other Austrian provinces. This arrangement placed property responsibilities inside or alongside individual administrative structures and made it more difficult to compare the cost and efficiency of space use across government. The reform introduced a centralized property company and an internal landlord-tenant system. Under this approach, federal ministries, universities, schools and other public institutions use buildings owned or managed by BIG and pay rent for the space they occupy. The economic logic was that departments would be more likely to rationalize their building use if accommodation appeared as an explicit cost rather than as a largely invisible administrative resource. Underused or unnecessary properties could then be reassigned, redeveloped or sold, while new investment could be directed toward facilities with continuing public value. BIG was constituted as a Gesellschaft mit beschränkter Haftung, the Austrian form of a limited liability company. Its sole owner is the Republic of Austria. The company’s legal and ownership structure means that it is not an independent private landlord in the ordinary sense: its strategy and operating environment remain linked to federal policy, public budgets and the government’s long-term requirements for schools, universities, justice facilities and administrative buildings. At the same time, BIG is designed to operate with commercial disciplines, including property accounting, rent-setting and investment evaluation. Over time, the company’s activities developed beyond basic ownership and leasing. BIG became involved in the construction of new buildings, major renovations, redevelopment of aging facilities, property maintenance and technical and operational services. It also manages the disposal of federal buildings and land that are no longer required for public purposes. Some development projects can involve the creation and sale of properties intended for private use, allowing surplus public assets to be converted into other forms of value while reducing the state’s holding of unnecessary real estate. The portfolio has a strong concentration in specialized public infrastructure. Schools and universities form the largest broad category, while prisons, police stations and court buildings represent another significant group. Residential and miscellaneous properties make up smaller portions of the portfolio. This composition distinguishes BIG from diversified commercial property companies: many of its assets are designed around public-sector requirements and cannot easily be substituted by ordinary office, residential or retail space. BIG also has a historical and social responsibility associated with property seized from Jewish owners during the Nazi era. Where relevant properties remained in Republic of Austria ownership, the company’s activities can include restitution, sale or compensation processes. This part of its remit places property administration within the wider framework of Austria’s efforts to address the consequences of Nazi persecution and unlawful dispossession. The organization’s economic position is unusual. It can participate in the Austrian real estate market and use market-oriented methods, but it operates only within Austria and receives most of its rental income from public entities. The government, in turn, depends on BIG for purpose-built facilities such as educational institutions and prisons. This creates a close relationship between the company and the federal administration, combining the functions of asset owner, service provider, developer and public infrastructure manager. BIG therefore represents a structural reform of Austrian state property administration as much as it represents a real estate business.

  • 2008

    Reported real estate portfolio valuation

    [1]

    The company’s real estate portfolio was reported as having a book value of approximately €4.15 billion, with schools and universities representing the largest category.

  • 1992

    BIG established by federal law

    [1]

    Austria created Bundesimmobiliengesellschaft to centralize the management of federal real estate and introduce a more transparent, cost-conscious approach to public-sector space use.

Products and positioning

A state-owned, Austria-wide real estate partner focused on providing and managing specialized buildings for the federal public sector.

  • Real estate leasing · 1992

    Public-sector property leasing

    BIG provides buildings to Austrian federal institutions through a landlord model. Users include schools, universities, ministries, courts, prisons, police facilities and other public bodies. The arrangement makes accommodation costs visible to occupying institutions while leaving ownership, major building decisions and much of the property lifecycle with BIG.

  • Public infrastructure development · 1992

    Construction and redevelopment

    The company plans and delivers new public buildings and redevelops older assets for continued federal use. Projects can involve the construction of educational, administrative, judicial, custodial or policing facilities, as well as extensive modernization intended to extend the useful life of existing properties.

  • Property and facility services · 1992

    Property maintenance and facility management

    BIG manages the upkeep and operation of properties in its portfolio, including maintenance and facility-management services agreed with tenants. These activities support the day-to-day usability, safety and long-term condition of public buildings and complement the company’s investment and refurbishment functions.

  • Real estate disposal and development · 1992

    Property sales and development

    Buildings and land that are no longer needed by the federal administration may be sold, redeveloped or placed into alternative use. BIG can also develop projects involving private use and sell completed properties, helping the Republic reduce surplus holdings and realize value from assets outside its operational requirements.

  • Historical property restitution

    Restitution-related property administration

    BIG participates in the restitution, sale or compensation handling of certain properties confiscated from Jewish owners during the Nazi period that remained owned by the Republic of Austria. This responsibility connects the company’s real estate work with public obligations arising from historical injustice.

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