Short films, filmed on the live site or drawn from our own data. Captions are on screen, so they work with the sound off.
Upload a spreadsheet of addresses and every home is found on the energy certificate register and valued, with its energy band, the value its unmade upgrades hold back, and the Portfolio Swatch. Filmed on the live site.
Our study of 5.7 million home sales: energy efficiency is priced, and buyers pay more for it since the energy crisis. Then one home and a 12-home portfolio: what upgrades not yet made hold back, against what the work costs.
What was a portfolio worth on 5 April 2015? Each home valued on the date, with its range, in pounds and in 35 currencies at that month's rate, and an Excel download with the method.
The homes in the films are a sample of real homes in England and Wales, shown by type and area only; on screen recordings their addresses are hidden. Every figure comes from the live site or our published research. The films are hosted on this site, so watching one shares nothing with a video platform.