Extensive site at the top of Les Merriennes has the potential to fit upwards of 70 homes.
Heavy plant machinery has been moved on site as work to flatten the old St Martin's hotel gets going.
It has not been used as a hotel for more than a decade and fire has made the buildings unsafe.
However, the 1.25 hectare site has the potential to accommodate around 70 homes, or more than 100 if they are keyworker or sheltered units.
Previous permission for 35 homes on the site has expired and no new plans have been submitted as yet.
A Development Framework, which has been approved by the Planning Authority, specifically protects the majority of trees, saying they add to the biodiversity of the area.
The demolition planning permission granted to the applicant, St Martin's Hotel 1987 Ltd, stresses that trees need to be protected with fencing to ensure they are not damaged at any stage of the process.
Aurigny raises concerns over impact of BA’s Guernsey–Heathrow flights
Channel Island musicians record Christmas song at Abbey Road
BA to operate Heathrow-Guernsey flights
13 cubic metres of invasive plant removed from Alderney beach
Guernsey's Lieutenant-General receives knighthood
Donations flood in to save Sark-born border collie with rare condition
Aurigny extends flight schedule up until early January
Blue Islands' Guernsey debt remains undisclosed
