HOUSEbuilder Crest Nicholson held an hour long blackout at 50 of its sites as part of the Global Earth Hour.
For the fourth year running, all non-essential lights were switched off on March 31, with residents urged on the company’s website to join in with the green switch off.
The builder has sites at Cedars Park, in Stowmarket, and Kings Warren, in Red Lodge. The international blackout was part of a worldwide movement to raise awareness of climate change.
Annette Cole, sales and marketing director, said: “Earth Hour is a great way to inspire people to take responsibility for their carbon footprint and raises awareness of the effect that we are having on the planet. The smallest changes in lifestyle can make a difference and that’s something that we encourage staff and residents to do at all of our developments.”