Green Shoots is a new monthly feature that explores the people and places that are doing their bit to improve the environment in the Harrogate district. Would you like to be involved? Get in touch: thomas@thestrayferret.co.uk

Tucked away on Bogs Lane in Harrogate is a home so good for the environment that it's not just fit for the 21st century, but for the next one too.

Tim and Marilyn Larner bought a drafty 250-year old farmhouse on the site in 2016. After demolishing some barns that stood behind it, they built two homes in 2017 and moved into one of them at the end of the following year.

The couple proudly displays a Passivhaus plaque by their front door, which is a hallmark of its environmental credentials. The five-bedroom property is one of only two houses in Harrogate built to the strict standards.

Developed in Germany in the 1990s, Passivhaus is seen as a game-changer for low-carbon housing. It’s an innovative design code that prioritises insulation so that a home doesn’t need any heating or cooling at all, resulting in minimal energy bills. 

The Larners’ home has other eco benefits including solar panels on the roof to generate electricity and air source heat pump that brings in heat from outside and pumps it indoors.

Mr Larner said:

Subtle benefits

Mr Larner estimates the house cost around 10% more to build than traditional methods — but the upside is electricity and heating bills are just £20 a year due to super air-tight insulation and renewable energy.

The whole house is wrapped in 300mm of rock wool all as well as air-tight membrane and there is 200mm of solid insulation on the roof.

Walking around the home, which is largely open-plan, the environmental benefits are subtle. Ventilation comes in through ducts in the ceiling and the large south-facing windows greedily maximise the amount of warmth offered by the sun.

The timber frame of the building was assembled like flat-pack furniture in just three days, bypassing the polluting and carbon-intensive building process entirely. Mr Larner said this ensures the quality and precision needed to make their home super air-tight.

He added:

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Housing targets

The property contrasts sharply with the glut of new build developments that surround it on the Kingsley Road and Bogs Lane area of Harrogate.

Mrs Larner said the building industry "has a massive vested interest" in building homes quickly and they don't always consider the impact of housing on the environment.

She added:

Mr Larner said the government needs to bring in legislation to ensure that more homes are built with the environment in mind:

Lifelong ambition

Building a home has been a lifelong ambition too. Many years ago, Mrs Larner had an uncle who built his own property. It left a lasting impression on the couple.

She said:

Mr Larner said they could never go back to how they used to live.