Heritage protection in the portfolio

Opportunities for culture and capital
Time to read6 min.
updated at04/01/2026
CategoryConversion in stock
Decorated stone column with Corinthian chapter and floral reliefs on a classic building.
First we shape the city - then it shapes us.
Jan Gehl
Urban planner and architect

Just think of the countless visitors who walk over Avenue des Champs-Élysées every year, stroll amazedly on Times Square or walk through the backdrop of Frankfurt’s new old town. Architecture has become a witness of the times everywhere, and you can also find properties from our portfolio. The facades of many buildings under our responsibility tell stories and shape neighbourhoods and sometimes entire cityscapes - in some cases significantly longer than our hausInvest’s own 50-year history.

But what does such a heritage that wants to be preserved mean for an asset manager? How can we secure such values in the portfolio and ideally also increase them through expertise and good ideas?

Especially in times of sustainability and circular economy, the topic of building monuments is experiencing a new kind of reading. After all, a building that has housed its residents, visitors or users for several, if not many, generations is ideally proof of the efficiency and savings potential of new building emissions. Consequently, building monuments are sponsors of what is gaining a new presence today under the concept of revitalisation of the existing or reconstruction culture.

All of this is reason enough to take a look at what benefits monuments in our portfolio offer and what challenges can come with building in existing buildings. After all, the guiding principle of active asset management is: Gentle with substance, but not hesitant with innovation.

 

What is actually considered a monument?

A very brief history of heritage conservation: The subject of monument protection is almost as old as the architecture itself. As often as this sentence can be read in a historical context, it also has a certain validity in this case. Early on, buildings were described as both worthy of protection and a burden of old generations. Fashion and construction styles have not always been evident and preservation has not always been linked to aesthetic conditions. Despite this very wide range, the actual monument protection - also conceptually - can be traced back to the end of the 19th century. The first attempts to systematically and legally protect architectural certificates began in the 1860s. The Dehio handbook, which later became popular, was a defining work on the topic. As a reference work for art monuments, the German architectural and art historian Georg Dehio established his Atlas as the standard. The first codified German Heritage Protection Act was enacted in 1902 in the Grand Duchy of Hesse.

In principle, monuments are a category of cultural monuments and are described as a preservable component of past construction. So far the short definition and history.

 

Facets and facades

Dealing with the topic of monuments and monument preservation offers many perspectives and, especially in a large portfolio of over 200 properties, countless stories could be told about individual properties. But firstly, four examples from our portfolio are intended to report on what monument protection made by Commerz Real can mean.

Large values in small terms: How AI optimises Frankfurter Börsenstraße in terms of energy

A major challenge for heritage-protected properties is the question of how to reconcile energy-efficient renovation and preservation of the appearance. After all, real estate must comply with limit values and contribute to climate change mitigation. In the heart of the financial metropolis of Frankfurt, we have mastered the balancing act between minimally invasive modernisation and energy-efficient operation thanks to artificial intelligence with Börsenstraße. Using new AI-controlled building management systems, consumption can be controlled smartly and savings potentials can be exploited. 
A large, historic building with many windows on a street corner under a blue sky.
Modern glass facade with trees and pavement in the foreground.

Munich’s Tucherpark in the Eisbach district - an ensemble that shows how monument protection works and transforms

When the last buildings of Munich’s Tucherpark were completed, our open-ended real estate fund hausInvest just saw the light of day. Tucherpark is considered to be one of the few office districts that were not only designed and implemented as a cohesive ensemble from the outset, but also originated from only two architectural offices. One of them, Sep Ruf, was one of the most important German architects of the post-war period and created light-filled, transparent buildings in Tucherpark, whose DNA is now intended to form the basis for a future-oriented new city district in Munich. The special thing about this monument is that there are just a dozen. It also shows that monument preservation does not mean rigid preservation of existing buildings. After all, 50 years later, the path of a style-defining modern construction from the 1960s and early 1970s proves that not only the appearance is worth protecting, but also the overall concept. What was originally thought of as a whole - almost like an ecosystem in itself - is now only consistently thought of in this way. The adaptability of Tucherpark will reshape Munich when design heritage and urban lifestyles of the future reunite. 

Shared foundation: Kaiser Square Frankfurt

With the city, its residents and the skyline, a new landmark of Frankfurt is growing between the glass high-rise buildings. The approach to Frankfurt’s Kaiser-Karee, which we are developing together with Tishman Sepyer, is characterised by an open dialogue with all those involved. As part of the new Frankfurt high-rise development plan, a unique combination of old and new is created with citizen participation, which gives its stage to the two main elements - historic monument and futuristic skyscraper. The Kaiser Square is a testament to how urban history can be continued within a building. 
Skyline with modern high-rise buildings, one highlighted in blue.
Two modern residential buildings with balconies, one pink and the other grey, at sunset.

Living and dreaming in historic walls

We are devoting ourselves twice to a special aspect of heritage conservation in the Saxony capital. With the Hotel de Saxe, we have part of the reconstructed old town of Dresden in our portfolio. A hotel that not only invites guests to dream, but uniquely recreates what once fell victim to the devastating days of the war. If you don't just want to stay for a night, but want to move in right away, we have an ensemble in stock with the Königshöfen courtyards in the immediate vicinity, which now belongs to the coveted residential area. It is here in particular that the atmosphere of historic walls coupled with contemporary living comfort is not only popular, but also that such elaborate conversions can increase value for our investors.