Why Retrofitting Legacy Buildings Can’t Wait
Across global real estate portfolios, one fact has become impossible to ignore: a high percentage of the buildings we live and work in today were not designed to meet modern demands.
From energy performance and occupant expectations to compliance and digital readiness, aging infrastructure is emerging as a barrier to progress. As organizations rethink how to achieve the highest ROI from their assets, retrofitting is no longer a secondary consideration – it needs to be a strategic priority.
At the center of this transformation is the building automation system (BAS). Once considered operational tools, BAS platforms are evolving into the intelligence layer that enables facilities to adapt, extend their lifecycle and meet modern performance standards.
The scale of the challenge
The urgency around retrofits is grounded in the simple reality that most buildings are old and getting older.
In the United States, nearly 70% of office spaces were built before the year 2000. Across Europe, over a third of buildings are more than 50 years old. The majority of those buildings are considered to be energy inefficient. This trend is playing out on a global level.
The consequences are significant. Aging infrastructure not only drives higher operational costs but also threatens long-term asset value. This is the point where retrofitting shifts from optional to essential.
From reactive upgrades to intelligent retrofits
Historically, retrofit projects focused on replacing failing equipment or making incremental improvements. This approach is no longer sufficient.
The next era of retrofitting is data-driven and lifecycle-focused – and intelligent. Modern BAS platforms enable coordinated, complete-building transformations and continuous optimization.
Extending lifecycle value through smarter automation
Operational costs account for the majority of a building’s total cost of ownership. By modernizing BAS, organizations can unlock efficiencies that compound over time.
“Rather than investing in short-term fixes, BAS upgrades can deliver compounding returns,” said Kaishi Zhang, VP Product Management, Building Automation & Controls, Johnson Controls. “Intelligent automation helps reduce operational costs while deferring major capital expenditures.”
Retrofitting for sustainability and compliance
Sustainability is a key driver shaping retrofit strategy. BAS enables continuous monitoring, reporting and optimization of energy performance to support evolving regulations and decarbonization goals.
Integrating new technologies – without starting at square one
Open, modular and cloud-based systems make it easier to connect legacy equipment with advanced digital capabilities. Wireless sensors and scalable architectures reduce retrofit disruptions and complexities.
Perceived retrofit costs can often be a barrier, but innovations and flexible finance models are making retrofits more accessible and aligned to measurable outcomes.
BAS as the backbone of large-scale transformation
BAS is becoming the central nervous system of buildings, enabling data-driven, whole-building transformation and orchestration of performance across systems.
The path forward illustrates that the need to retrofit aging buildings is not new, but the urgency to do so has never been greater. BAS is now a strategic asset that enables buildings to evolve, adapt and perform.
In the end, retrofitting is not only about updating the past. It is about allowing structures that might have been considered less useful to become part of a foundation for the future.
You can read articles on the other Global Trends here and here.
Download the complete “The Future of BAS White Paper” and learn about all five global trends and how to keep your facility functioning at the highest level.
