A revised planning submission for the former Millbrook House hotel wants to create five-star accommodation with waterside cabins and a converted stable wing.
The resubmitted plans by CCA Galleries take the cost of the project to £29 million.
In 2021, a £14 million scheme was proposed to refurbish, upgrade and extend the disused hotel.
READ: £14m scheme to revitalise old hotel
The owner says post-COVID delays and increases in local construction costs meant the previously approved scheme became financially unviable.
CCa Galleries now wants to completely remove the 1970s block to make room for a modern extension and more bedrooms.
The new extension will provide one- and two-bedroom guest units with catering facilities, and a range of five-star individual suites.
Hotel guests will also have the option of five waterside cabins, a converted stable wing, or a suite within the refurbished original Villa or its Gatehouse.
The plans also include a woodland chapel within the grounds, a spa and wellness centre, a gym, and a Glasshouse cafe.
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