Do you own an existing property that is vacant or no longer meets modern living standards?
One effective way to increase property value is through densification – by adding balconies or loggias. They improve living quality, create additional space, and increase both demand and rental income.

Types of densification: turning existing buildings into new living space
In addition to roof extensions or building additions, retrofitted balconies, loggias, or modular building elements are a popular method of densification in urban areas. Especially in multi-storey residential buildings, they offer a cost-efficient solution with a significant positive impact on property value
Expand your property with balconies and loggias
Many buildings from the 1960s and 1970s lack balconies and are energetically inefficient. Given today’s high construction costs and long building times, it’s worth upgrading existing properties in a targeted way. Retrofitting balconies and loggias creates additional living space, increases market value, and is far more cost-effective than new construction.
Why densification pays off
Upgraded balconies increase rental income and make apartments more attractive.
- Additional living space: Balconies and loggias expand the usable floor area. When equipped with glazing, they can serve as fully functional living extensions – increasing both rental and resale value.
- More comfort and energy efficiency: Glazed balconies provide up to 28 dB noise reduction and improve thermal insulation, helping to lower heating costs – a clear advantage given rising energy prices.
- Year-round use: A glazed loggia serves as a protected living area in winter and can be fully opened in summer – for maximum comfort and flexibility.
- Solar power from the balcony: PV railings generate electricity directly where it’s needed – covering part of the apartment’s own energy demand.
Efficient modernization with prefabricated glazed balconies
Sustainable construction with modular balcony solutions: Our sybkon balconies are based on a modular construction principle – prefabricated in the factory, transported as complete units, and quickly installed on site. This not only shortens construction time but also meets key criteria for sustainable building. With prefabricated balcony elements, properties can be modernized quickly and efficiently.
- Fast installation: Thanks to prefabrication, balconies and glazing systems can be installed within a short time – with minimal disruption on site.
- Predictable costs: Unlike conventional extensions, the costs of prefabricated balconies are clearly defined from the start.
- Full-service solution: From parapet removal to complete balcony glazing – we offer all services from a single source, reducing planning effort for our clients.
- Sustainable materials: Concrete, metal, and glass are fully recyclable. The heating energy saved by the glazing compensates for its emissions in just 3.5 years. At the end of their service life, the balconies can be easily renewed or dismantled.
Steps to successful property densification:
- Schedule an initial consultation: We analyze your property.
- Receive your offer: A tailored solution for your building.
- Start implementation: Planning and installation according to a fixed schedule.
- Increase property value: More living quality and higher market attractiveness.
Case study: balcony upgrade at “Traunsteinblick” Schwanenstadt
The Traunsteinblick project in Schwanenstadt shows how a former retirement home was turned into an appealing multi-family residence – thanks to new balconies with Lumon glazing and premium sybkon prefabricated balcony systems.