CBD Program reporting

The visuals currently split Building Energy Efficiency Certificate (BEEC) data grouped by state, month, year, star rating and building NLA. This is shown in terms of total BEECs per year, and total unique buildings per year. This second dataset is provided because some buildings have multiple BEECs in a 12-month period.  

When CBD Program data is downloaded monthly from the department’s ICT platform into excel based downloadable datasets it's then uploaded into Power BI to create these visuals.  

CBD Program data only includes information regarding commercial office buildings that meet the Building Energy Efficiency Disclosure Act 2010 (BEED Act) disclosure criteria.  

Current year data only includes data gathered up until the last data download and any conclusions drawn should be qualified by that caveat.  

Around 70% of the total number of NABERS energy ratings certified in the office building category are used in the CBD Program for BEECs, the rest being ‘voluntary’ ratings. This contributes to some differences between published NABERS and CBD data.   

The BEED Act mandated that disclosure affected buildings must display NABERS ratings in their advertisements from 2010, then required Tenancy Lighting Assessments (TLAs) and BEECs from 2011 onwards.    

It should be noted that for visuals 6, 7 and 8 the building NLA data only started being collected by CBD in 2015. In visual 8 the area weighted star rating effectively represents an average star rating value per square metre of total office floorspace. This provides a truer representation of the overall impact on energy efficiency than an average star rating calculated per building, given the large range in building sizes captured in the CBD Program.  

In visual 9 only approved exemptions are included, with reasons agreed by CBD.  

In the second report (Figure 2), the first two visuals track national and state-based energy use per occupied square meter per year.  

The third and fourth visuals track the spread of star ratings for all buildings nationally by certificate count and by building NLA weighting.  

The fifth visual tracks state based NLA weighted star ratings by year.   

The sixth visual follows the change in nominal lighting power density across all buildings.   

The seventh visual counts all TLA’s issued.  Noting that the regulatory scope of the CBD Program expanded in 2016, lowering the disclosure size threshold from 2000m2 to 1,000m2 and with TLAs moving to a five-year validity period. 

CBD Program performance metrics only reflect CBD Program activities.  

Note : A correction was made to visual four data on 22/01/26 in the first report (Figure 1) to reflect unique, rather than total, certificate counts. Additionally, in visual two the data counts changed very slightly to reflect better data filtering.