Senior councillors have insisted there will be 40 per cent affordable housing across the vast 4,000-home Maltkiln site, west of York, following concerns the target has been quietly dropped.

Maltkiln’s 106-page Development Plan Document (DPD) was discussed at a full meeting of North Yorkshire Council last week ahead of its imminent submission to the secretary of state for housing.

Harrogate Borough Council, which began work on the DPD several years ago, had a requirement in its local plan for any greenfield development to have at least 40 per cent affordable housing.

This can include social housing, discounted market housing and homes sold through shared ownership schemes.

The affordable housing requirement for Harrogate remains active in the new North Yorkshire Council until the unitary authority confirms its own county-wide local plan in the second half of the 2020s.

But division councillor Arnold Warneken (Green, Ouseburn), said the DPD “breaches” the Harrogate local plan because he claims it does not give any assurances about the number of affordable homes that will be built.

The Maltkiln scheme will impact affluent villages between Harrogate and York like Cattal, Kirk Hammerton, Green Hammerton and Whixley. Parish councillors have said that without a firm target, the development will make it more difficult for young people who grew up in the area to own their own home.

Cllr Warneken said the DPD allows developer Caddick Group to “chase profits and ignore the villages’ needs”.

He said: “Local residents are not saying no to houses they want the right balance in the right location. Do we continue in a ‘we know best’ arrogant way or do we take notice of those who put faith in us to tackle the housing problem?”

At a meeting last month, executive member for business Cllr Derek Bastiman admitted the affordable homes would likely be built after larger houses, meaning they could not be ready until well into the 2030s.

Responding to Cllr Warneken, the council’s Conservative executive member for housing Simon Myers said there had been “misconceptions” around affordable housing at Maltkiln.

He insisted the scheme will comply with the Harrogate requirement for 40 per cent unless it fails viability tests.

He said: “If it were the case there was no requirement for affordable homes in the proposed Maltkiln development, I’d be the first to support Cllr Warneken. People do get confused about this. The current position on the new settlement is Harrogate’s core strategy requires 40 per cent affordable housing on greenbelt development which still stands, whether that stands the test of viability we’ll see.”