Your experts for Commercial Real Estate in Cologne, Bonn and Leverkusen.

Larbig & Mortag is your regional specialist for commercial real estate of all kinds. Whether office, loft, practice, shop, gastronomy, warehouse or investments. We provide the perfect commercial real estate or capital investment in the metropolitan area Cologne, Bonn and Leverkusen. Larbig & Mortag has a deep-rooted regional network and offers a national and international connection through the NAI apollo group network.

Über Investment

Über Ladenlokal

Über Praxis

Über Büro

Über Gastronomie

Über Loft

Über Lager

Who we are.

Larbig & Mortag Immobilien was founded in 2008 by Markus Larbig and Uwe Mortag and since 2012 has developed into one of the largest brokers for commercial real estate in the greater Cologne, Bonn and Leverkusen area. In addition, we have been operating a successful branch in Bonn since 2013 and another location in Leverkusen since 2016. The basis of our corporate philosophy lies in the endeavour to lead our customers to success.

Our team currently consists of 35 employees. Our employees accompany you from the analysis of the current situation to the conclusion of the contract. We attach great importance to fast communication by means of modern media which, above all, saves our customers' time. After a successful conclusion of the contract, our after-sales team will take care of your other concerns (e.g. relocation management, renovation measures, etc.).


We sell your commercial real estate in an innovative, professional, fast and profit-oriented manner with in-depth knowledge of the market. From office buildings to retail properties and production halls to commercial properties. We are working on a structured investment process. We broker individual properties just as professionally as larger portfolios.


Our region offers a broad creative and media economy. For this reason, we have specialised in creative commercial spaces. This includes old factory buildings or modern new lofts in all locations in our region.


In our retail team, we employ specially trained employees for renting out restaurant space. The team advises owners and gastronomers alike.


Practice areas are a special case in the sector of office real estate. For this reason, we have specially trained our employees and can provide ideal support to doctors or therapists in their search for a new location.

Office rental.

We are the experts for office, practice and loft real estate in the greater Cologne, Bonn and Leverkusen area. Our wide range of rental offers is as diverse and individual as our customers. Our team of nine employees has been able to broker over 650,000 m² of office space so far.


With our subsidiary conceptstories Immobilien GmbH, we have built up a team of experts in the retail sector. They advise and broker retail real estate throughout North Rhine-Westphalia with a focus on the regions of Cologne/Bonn, Düsseldorf/Neuss and the Ruhrgebiet.


As specialists in our Cologne, Bonn and Leverkusen region, we rent or sell storage space and hall space. We advise searching companies on site development or relocation. We bring sellers and buyers together and carry out a structured process for both parties.

Finding the right location and property.

As entrepreneurs, we first try to understand exactly what you need. The exact recording of all your wishes and requirements for the location and real estate are an important starting point for the property search. Once these have been determined, we will put together an objective proposal for suitable offers and discuss them with you. In the next step, we visit the property with you and provide you with the most important criteria of the property in a matrix. With this basis, you can make the ideal decision for your new company location.

Please do not hesitate to contact us!

The right marketing for your property.

Larbig & Mortag employs 35 experts in the areas of office and shop rental, investment and marketing. This unique combination offers you as the owner a wide range. Larbig & Mortag can advise you optimally with a view to the optimal return with high tenant satisfaction. From the free valuation or rental appraisal of your property, to the creation of a professional marketing plan, a targeted marketing, to advice on renovations in or on the building.

Please do not hesitate to contact us!

Determining the correct value of your property..

The value of a property is the basis for any decision. In order to determine this value, Larbig & Mortag offers you a free initial assessment. For this we need some basic information from you about your property. This includes a land map, a list of tenants and a brief description of the building. In our initial assessment, we give you a range for the purchase price, which indicates the minimum value, an average market value and an upper limit of the value. In the second step, we can offer you a more detailed valuation with the assistance of an expert. For this valuation, we need a little more time and, above all, all available property documents.

Please do not hesitate to contact us!

Who we are.

Larbig & Mortag would only be half as good without our team of experts. Because we know that employees are the most important foundation in a service company. Find out who is responsible for your request.

Markus Larbig

Managing Director

+49221 998 997 97

Uwe Mortag

Managing Director

+49221 998 997 98

Hendrik Heßlenberg

Managing Director Bonn

+49221 90 90 52 52

Jan Seidenfaden

Managing Director

0800 998 997-7

Contact us.



Theodor-Heuss-Ring 23

50668 Cologne

+49 221 998 997 0


Rabinstraße 1

53111 Bonn

+49 228 90 90 52 52


Hemmelrather Weg 201

51377 Leverkusen

+49 214 330 198 60






Brokered commercial space in m²

650,000 m²

Brokered investment transaction volume in m²

1000,000,000 m²


We will show you the current advantages and disadvantages of your property professionally and without obligation. With our purchase price estimate you have a compact and at the same time conclusive appraisal of your property. Your goals and ideas always clearly in focus. (Purchase price assessment – real estate compass)

Before you start looking for suitable office space, an exact space requirement should be determined. Our area calculator supports you in this. In addition, this tool offers you the opportunity to check your current room situation and to find suitable properties.

Our goal-oriented strategy for you when renting your commercial property: We are innovative, professional, fast and profit-oriented with in-depth knowledge of the commercial real estate market in the greater area of Cologne, Bonn and Leverkusen. We are entrepreneurs ourselves and understand your real estate assets as an important asset class. On this basis, we were able to broker more than 100,000 m² of office space in the past 3 years in close consultation with our clients.

Passion for real estate and our self-image as an innovative, future-oriented service provider are two pillars of our success. The third is market research, which we have been doing intensively since the company was founded. In our team, up to four team members are exclusively concerned with observing the commercial real estate market in the greater Cologne, Bonn and Leverkusen areas.


Casita Mexicana opens in the Belgian Quarter

conceptstories Immobilien was able to rent a restaurant with around 200 m² to the Mexican gastronomy concept Casita Mexicana. It is already the company's second location in Cologne and the fifth location overall. conceptstories were advisory and mediatorially active.

  • Gastronomy
  • approx. 200 m²

Cancom rents in I/D Cologne

Larbig & Mortag was able to rent approximately 6,000 m² in Cologne's Schanzenstrasse to CanCom SE. The IT service provider will move into the office space in early 2021 in the new I/D Cologne building project. Larbig & Mortag were advisory and mediatorially active.

  • Office
  • 6,000 m²

Portfolio sale with a total of four office properties

Larbig & Mortag was able to sell the Westwind portfolio, consisting of a total of four properties, to Stefan Frey AG & die Convalor Group. The office buildings are fully let and are all located in the Cologne-Lindenthal district. Larbig & Mortag were advisory and mediatorially active.

  • Purchase price
  • € 25 Mio

Aldi Süd rents location in Cologne-Ehrenfeld

conceptstories Immobilien provides Aldi Süd with a new location in a busy intersection in Cologne-Ehrenfeld. The shop has a total area of approx. 780 m² and is therefore part of the company's small area concept. conceptstories were advisory and mediatorially active.

  • Retail
  • approx. 780 m²

OSMAB acquires 51,000 m² development property

Larbig & Mortag was able to sell the approx. 51,000 m² company premises of the packaging manufacturer Cyklop International in Industriestrasse 133 in Cologne-Rodenkirchen. The buyer of the property was OSMAB, which plans to develop the location in the coming years. Larbig & Mortag were advisory and mediatorially active.

  • Purchase price
  • n. a.