Bonner Straße 540, Cologne
Move in yourself or secure an investment opportunity. Sales launch in spring 2026 – reserve now!
A residential project with clear prospects for sustainable value growth is being developed at Bonner Straße 540 in Cologne-Marienburg: a well-maintained existing building with 32 residential units, which is being upgraded to contemporary standards in terms of energy efficiency, technology, and appearance as part of comprehensive modernization measures.
The building is undergoing a complete energy renovation: new windows, a modernized facade with greenery, a new roof, and refurbished balconies. In the future, efficient heating will be provided by an intelligently controlled hybrid system consisting of gas central heating and a connected air-water heat pump – resource-saving and future-proof.
More than half of the apartments are currently vacant and will be completely renovated. This will result in modern, optimized floor plans, underfloor heating, high-quality parquet flooring, and contemporary bathrooms. Once the work is complete, the condominiums will be sold vacant and completely renovated – with light-flooded rooms and high-quality fittings. Ideal as a new home or as an attractive investment.
The units that are already rented out will also benefit from the modernization: new burglar-resistant apartment entrance doors, a modern fresh water station, and connection to the new heating system will increase comfort, security, and efficiency. For investors, these units mean stable long-term returns in a residential environment with consistently high demand.
This creates a compelling combination of immediate rental income and value-enhancing development potential – ideal for investors who value stability, sustainability, and future viability.
Bonner Straße is one of the most sought-after locations in the south of Cologne. Its proximity to the outer green belt, quick access to the Cologne-South motorway junction, short distances to the city center, and excellent public transport connections—including the new subway line—make the location particularly attractive. Urban, in demand, and fast-growing: Bonner 540 combines all the factors that characterize a future-proof home or a secure investment.
Information
32 condominiums
Renovated apartments as well as modernized inventory
16 times 2-room apartment (approx. 49 m² each)
16 times 2-room apartment (approx. 82 m² each)
10 bicycle parking spaces
sales launch Spring 2026
location
Bonner Straße is one of the central arteries in the south of Cologne, connecting the popular districts of Bayenthal, Raderberg, and Südstadt. Here, urban lifestyle meets established residential structures—a location that is equally sought after by owner-occupiers and investors. The Bonner 540 project is surrounded by the dynamic energy of a neighborhood in transition: numerous modernization projects, new restaurant concepts, and the attractive development of the Clouth Quarter and Rheinauhafen emphasize the steadily increasing potential of this location. The excellent transport links speak for themselves: via the nearby A4 and A555 motorways and the newly extended underground line, you can reach the center of Cologne in just a few minutes. Shopping facilities, restaurants, cafés, and all amenities for daily needs are in the immediate vicinity. With its combination of a central location, modern infrastructure, and urban quality of life, Bonner Straße 540 offers a future-proof address—and thus the best conditions for sustainable value growth.
Energy performance certificates
Not available
A+
A
B
C
D
E
F
G
H
0
25
50
75
100
125
150
175
200
225
>250
Energy certificate type
Needs certificate
Energy demand
16.8kWh / (m²*a)
Energy consumption value
12 kWh / (m²*a)
Main energy carrier
Air-to-water heat pump
Energy certificate year
2027
Sustainability
Greening
The extensively greened flat roofs of the Hö offer many advantages for people and the environment. Fine dust and pollutants are filtered out of the air, the buildings are protected from summer heat and winter cold, and they are a delight to look at every day.
Mobility
104 bicycle parking spaces, 19 underground parking spaces that are already pre-equipped for the installation of a wallbox (we will be happy to refer you to an e-mobility service provider), two bicycle shelters, also forcargo bikes, bus stops right outside the front door – the mobility of the future is naturally already built in.
Energy
the green electricity provider naturstrom generates the electricity required directly on site via the large-scale photovoltaic system on the roofs of the Hö. Completely ecological, inexpensive, and without transport losses. If the electricity generated on site is not sufficient, it is automatically supplemented by green electricity from German hydroelectric power plants. In addition to their own electricity, the apartments in the Hö benefit from their construction as Efficiency House 55 buildings, which means that the primary energy requirement of the buildings is 45% lower than that of a new building constructed in accordance with the ENEV 2016 regulations.
