A £12.5m housing development on a former school site in the Borders promises to be in a class of its own in terms of saving energy.

An official sod cutting ceremony has been carried out as work begins on the building of 64 energy-efficient homes on what was the location of the old Earlston High School.

Led by Cruden Building of Edinburgh, on behalf of Selkirk-based Eildon Housing Association, the homes have been designed by architects Aitken Turnbull, which has a base in Galashiels.

It contributes to the association’s strategy to address the housing supply needs of the region, with the new homes described as “much-needed”.

The development will comprise of two, three and four bedroom homes, apartments and cottage flats. Cruden say the low energy development will use “significantly” less energy than conventional homes through green measures which include air source heat pumps.

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Nile Istephan, Eildon Housing chief executive, said: “I’m really pleased we are now starting work at Earlston, as affordable housing supply in the Borders still remains a huge demand, particularly now with soaring costs.

“It’s fantastic we can use as many local trades and businesses as possible, enhancing the economy right here in the Borders.”

Craig Giblett, Eildon Housing chief executive, added: “We are delighted to be working on another important development for Eildon Housing Association – the eighth development we have carried out in the last five years.

“As well as building sustainable, modern homes which make a difference to local residents, we will also be bringing a range of community benefits, including new jobs and training opportunities to the area.”

Scottish Borders Council’s long-term housing strategy identifies the redevelopment of the old school as a priority, and the authority has provided funding of £450,000 to ensure the project became a reality.

The former school closed several years ago with the new facility opening in 2009.