The owners of the Raithwaite Estate between Whitby and Sandsend have applied to Scarborough Council to extend Raithwaite Hall to add another 30 rooms to the building.
The hall has 45 rooms at present with another 28 in The Keep.
In 2018 the owners, Raithwaite Trading Company Limited, were granted permission for a £31m development consisting of 71 cottages, 82 apartments, 37 lodges and a restaurant.
The new application, which is another part of the estate, is now out to public consultation.
The supporting documents lodged with the council state: “The additional accommodation (and some internal reconfiguration) is needed to provide the hotel with the level of accommodation and upgrade in facilities required to position itself as a leading and high-quality hotel within the borough.
“The proposal will help Raithwaite Estate to make a greater contribution to Whitby and the surrounding area through the provision of enhanced tourist accommodation and facilities.”
The new extension will be taller than the existing hall and will be the first thing visitors see when they pull up to the hotel.
The application adds: “The design is of high quality.
"It will also support the operation of Raithwaite Bay as a year-round facility supporting non-seasonal tourism employment.
“The proposed extension is ideal to build upon an existing successful hotel and tourist offer – it is substantially hidden within the landscape – the topography of the site allows for the integration of development into the landscape below the ridge line of the valley.”