Respected Sir/Madam,
With all due respect, I would like to state that I am ________ (name) a student of ________ (course name) having _______ (College roll number).
Courteously, I would like to express my sincere apologies for damaging the college property situated at _________ (mention location) on __/__/____ (date). In this regard, I regret the damage I have caused to the college’s property and feel sorry for the act done.
I hereby ensure you that this kind of act will never happen again in future.
Yours sincerely,
___________ (Name),
___________ (College roll number),
___________ (Contact details)