Properties signed up to scheme fell from 951 to 752
The number of Homestay properties available during this year's TT was down more than 20 per cent.
A total of 752 homes were registered down from 951 in 2019.
Between 2016 and 2018, the number rose from 801 to 864, before increasing further for 2019.
Registration for the scheme, which allows Manx residents to register their homes as visitor accommodation for the TT period, opened last month ahead of the 2023 event.
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Letters delivered to those affected, says DOI