But survey revealed a rise in buildings with energy performance certificates from 25% to 36% between October and January

36% of commercial properties for sale or rent had energy performance certificates in January, compared with 25% in October.

The EPC index, run by National Energy Services and 黑洞社区, monitors how many commercial buildings being marketed have valid EPCs. In January, 64% did not have an EPC lodged on the government鈥檚 official registry.

Brian Scannell, managing director of NES, said: 鈥淔or over a year now it has been a legal requirement that all commercial buildings being marketed for sale or rent should have an EPC available to inform prospective buyers and tenants about the energy performance of the building. It applies equally to all non-domestic buildings 鈥 from large city-centre offices to the typical high street shops and offices that make up the vast majority of our commercial property stock.

鈥淏ut despite increasing attempts at enforcement action by Trading Standards, compliance is only proceeding at a snail鈥檚 pace 鈥 we can see that almost two thirds of all commercial properties for sale or rent are still flouting the law.

鈥淵ou can鈥檛 argue that it doesn鈥檛 matter, especially in the face of this week鈥檚 latest warnings about energy shortages and significant fuel price rises.

鈥淭he display of the EPC rating should be mandatory on all commercial building agents鈥 particulars. This is already in place for the sale of homes and it brings real transparency and helps consumers.鈥

The index was introduced after NES research in June 2009 revealed that more than 80% of commercial property agents were unable to supply a mandatory EPC for the offices or shops they were marketing. (Click for the ).
The sample for January included 564 commercial buildings throughout Cheshire, Gloucestershire and Shropshire. All properties are identifiable and have been on the market in the past 30 days.

NES publishes the