The agreement sets out a joint responsibility to negotiate a development plan to construct the facility, replacing the existing Upper Springland development in Perth.

It marks a key milestone in the venture which has been named Our Inclusive Community Project (OICP). The development will look beyond simply building new housing but will develop facilities and initiatives that give residents and wider service users greater opportunities to participate and flourish as part of a growing, new community.

Springfield, which recently became the first UK housebuilder to complete the Next Generation Core Sustainability Benchmarking Initiative, said it has grand ambitions for the site.

Innes Smith, Springfield chief executive, said: “Our vision for Bertha Park has always been to include everything a community needs to thrive. It is already home to around 500 houses, across a range of tenures, a Microsoft flagship high school, a local shop and destination playpark. The village has been recognised for a prestigious national sustainability award and has been named the best development in Scotland.

“Now, working with the great team at Capability Scotland, it’s our shared plan to introduce one of the most sophisticated care sites in the entire country to the Bertha Park community.

“Already we have had a number of ideas for the care facility, and we hope to secure an agreement very soon to take this project to the next step.”

It’s hoped that once a development plan has been successfully negotiated, ownership of the site will transfer to Capability Scotland upon handover of the completed site by Springfield.

The partnership aims to submit a planning application to the local council by the end of this year.

Brian Logan, Capability Scotland chief executive, added: “Agreeing to sign this land exclusivity agreement is a significant milestone in making OICP at Bertha Park a reality for Capability Scotland and the people we support.

“There is much work ahead of us as we move towards a detailed planning application, but it is great to have this piece of the jigsaw in place.

“Such opportunities to develop services and facilities from a blank canvas are rare, and we look forward to the next steps, working with the people we support, their families, our colleagues and our strategic partners to bring about an exemplar facility which will deliver first-class care and support for disabled people.”

Residents from Capability Scotland’s existing facility at Upper Springland – all of whom will be relocated to the new site at Bertha Park – attended workshops alongside family members, staff and the wider community to co-produce how the facility will look, and what it will offer to its service users.