Glasgow Housing Association's ambitious plans for an energy-efficient home which costs just £100 a year for heating and hot water have taken a step forward.

GHA has teamed up with architects PRP and City Building to build four prototype houses which feature high standards of insulation, coupled with low energy running costs and simple technology.

And with the target of heating and hot water bills coming to just £100 a year – or £2 a week – the home will tackle fuel poverty head-on and play a key role in reducing impact on the environment.

A typical 3-bedroom home would usually cost around £1100 per year to heat.

The four 3-bedroom, semi-detached houses – which have become known as 'The Glasgow House' – are currently under construction at City Building’s Skills Academy in Laurieston, Glasgow. They will be completed in May.

Once the houses are fully tested, it is planned that more will be built for GHA tenants.

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Similar in appearance and performance, the two blocks of semi-detached homes are built in alternative forms of wall construction. House Type 1 has a thin bed insulating hollow clay block construction with external wall insulation and render finish.

House Type 2 comprises a highly-insulated, locally-sourced timber frame with pre-manufactured floor and roof cassettes, with external walls in facing brick.

Key features contributing to the low energy bills include:

• High levels of insulation in both forms of construction

• Windows and sun rooms to suit orientation to capture the energy of the sun, with details to avoid overheating

• Simple forms of construction for ease of construction and to minimise heat loss and use of energy

• Off-site prefabricated roof and floor panels to speed up construction

• Locally-sourced or assembled materials including windows, pre-manufactured floor and roof cassettes, plus timber kits and kitchens from RSBi in Springburn

• Usable insulated roof space to provide room in the attic at minimum cost

• Efficient heating system and user-friendly controls

• Solar thermal panels on the roof to contribute to water heating

• Educating residents on how best to benefit from special features of their homes.

Jim Sneddon, GHA’s Executive Director of Regeneration, said: "The Glasgow House is no longer just an idea – it is now a development with a real future.

"This simple, cost-effective design for an energy-efficient home will help families enjoy a better quality of life. The prototype homes are also being built using locally-trained workers and apprentices.

"GHA already provides some of the lowest cost social housing in Glasgow and now we want to provide the best and greenest housing which benefits our tenants and the environment."