BCO pilots new office grading system as industry calls for reform

The UK’s office grading system is no longer fit for purpose, according to new research from the British Council for Offices (BCO). A report authored by JLL for the BCO found that fewer than three percent of professionals in the sector support the current system, with almost all calling for change. The report, Redefining the Market: Beyond Grade A, proposes a new scoring-based framework designed to reflect the shifting priorities of occupiers, investors and developers in an era shaped by flexible working. It sets out a 100-point matrix across four categories – physical quality, sustainability, technology and amenity – aiming to provide a more transparent and adaptable standard.

Survey findings highlight the scale of dissatisfaction with the existing definitions. Almost 90 percent of respondents said a more robust framework would improve clarity and consistency, while sustainability was rated as the single most important factor in assessing office quality, ahead of traditional physical measures. Certifications such as EPC, BREEAM and NABERS were identified as essential by nearly all respondents.

The research also points to emerging priorities. Health and wellbeing, smart technology and tenant amenities are now viewed as critical to office quality but are often overlooked in current classifications. A new “Super Prime” tier of office space is also gaining ground, defined by exceptional environmental performance, advanced technology and high levels of amenity.

The proposed model would create four tiers of quality: Prime (80 points or more), Grade A (50–79 points), Grade B (30–49 points) and Grade C (below 30 points). The scoring covers factors such as natural light, ceiling heights, energy sources, air quality, building management systems and tenant services. It has been tested on schemes in London, Leeds, Manchester, Reading and Gloucester, demonstrating that top-performing space is no longer limited to central London and that high-quality retrofits can rival new-builds.

Samantha McClary, BCO chief executive, said: “As demand for high-performing, sustainable and amenity-rich workplaces continues to grow, the industry needs a shared language to distinguish truly exceptional space. The proposed framework supports the market’s flight to quality and provides clarity for investors, developers and tenants alike.”

Elaine Rossall, report author and head of offices research at JLL, added: “Office market standards and occupier expectations have evolved since the pandemic. While traditional physical characteristics remain important, there has been a shift towards building performance and user experience. The strong consensus for reform is vital if the industry is to adopt a system that remains relevant for the long term.”

The BCO is now seeking further feedback from members and the wider office community before finalising the new grading system.