The grade II-listed Grantley Hall in North Yorkshire could be turned into a £25m luxury hotel and spa after plans were submitted to Harrogate Borough Council.
If approved, the 17th-century stately home, set in 30 acres of wooded parkland and grounds, will be converted into a 52-bedroom hotel.
Proposals also include a restaurant, bistro and cocktail bar, and for Grantley Hall to be marketed as a wedding venue. An outbuilding will be developed to provide on-site accommodation for staff.
The property was bought by Grantley Hall Ltd, a new company set up by Valeria Skyes, the ex-wife of multi-millionaire businessman, political donor and philanthropist Paul Skyes.
It was put up for sale in 2013 with a price tag of £6m, which included outline planning permission for a hotel and spa. The sale was handled by DHP Croft and Strutt & Parker.
A planning report submitted to Harrogate Council states: "The proposed development is a unique opportunity to both improve tourist accommodation in the district and restore an important listed building. The investors are prepared to commit a significant amount of money to the project and it is hoped the proposal will be supported."
The hotel is expected to employ 160 staff, creating 90 full-time jobs.