Spa operator Champneys has appointed Darling Associates to provide the designs for a £10m redevelopment of the historic Mottram Hall, which it acquired in September (2018).

The Grade II-listed, 18th century building currently comprises a hotel, spa and golf course in addition to conference and events facilities.

Built in 1721 by Nathaniel Booth, Mottram Hall was first converted into a hotel in 1940 and features formal gardens which are surrounded by 270 acres of parkland.

Champneys intends to turn the property into a luxury spa resort, with plans including a 20m swimming pool, 18 new treatment rooms and wet and thermal experiences.

There are also plans to increase the number of bedrooms to 150 and add new conference facilities and an extension to the clubhouse on the Championship golf course.

Construction on site is expected to commence in 2019.

"Mottram Hall gives our brand a broader geographical spread with a presence in the North-West," said Champney's owner Stephen Purdew.

"It's a fantastic property and we're delighted to be adding it to our collection of properties within the Champneys Group. We're now planning a considerable investment property which will take place over the next year."

The work will be designed by Darling Associates' Wilmslow-based leisure and hospitality arm – formerly called Architect CT. Darling Associates acquired the practice earlier this year.

Chris Darling, managing director, Darling Associates, said: “It is fitting that Mottram Hall, our first joint project, is in the North West and we’re thrilled that our partnership with Architect CT is already reaping rewards."