Two in three insurance companies may not cover the cost of damage caused by parties getting out of hand, research has indicated.
 
Damages worth £16.8 million caused by Britain’s' youths every year who host parties without their parents' consent involve major structural damages to the home.
 
According to Fairinvestment.co.uk, insurance policies may not cover such damages if caused by someone who is not a member of the household.
 
Research by Sainsbury's Home Insurance, reveal that around 54,000 parties are held without the parents' consent a year.
 
Manager of Sainsbury's Home Insurance, Neil Laird said: "The rise of sites such as Facebook and Bebo has dramatically changed the way teenagers in particular invite 'friends' to their parties."
 
Last year, after a party in County Durham was advertised on the social networking site, MySpace, 200 teenagers caused £20,000 worth of damage to the home.
 
He encouraged that parents warn their children about hosting parties in their homes particularly inviting people that they do not know well. 
 
"It's not uncommon to have parties with many hundreds of people attending and when such events get out of hand some insurers may suggest that the homeowner failed to take due care of the property and could refuse to pay up," Laird added.