A West Launceston landlord is facing a $15,000 repair bill at least after an out-of-control party promoted on social media over two nights last weekend left his entire house trashed.

The two-night bender saw offensive graffiti painted on the walls and the house extensively damaged and left in squalor.

The windows of the Victorian-style home yesterday were boarded up and remnants of the party and drug use, rubbish piles, and an assortment of personal items and children's toys left inside.

The landlord, who did not wish to be identified, said he felt powerless to prevent the extensive damage from occurring in the first place due to restrictions upon him through the state's tenancy act and a police request not to step on to his property.

He said he had been made aware of the party organised over social media by concerned neighbours last week and approached people staying at the house to request that no party was held and notified police two days beforehand.

The landlord said he served a notice to vacate on Friday which gave the sole tenant, who had signed the lease agreement in May, 14 days to vacate.

The landlord said he later watched the party proceed on Saturday from his car parked in his street and left when he felt his safety was compromised.

He said the guests were predominately late adolescents and the organisers in their late 20s.

A neighbour reported about 200 car movements that night before the party started again on Sunday night.

The landlord said he and neighbours called on Saturday night and Monday morning in an attempt to shut down the raucous party.

He said police prevented him from accessing his own property.

Launceston Police Inspector Michael Johnson confirmed that police attended to complaints about the party but had to rebut several requests from the landlord for them to enter the property as doing so would be unlawful.

He said police could not allow the landlord to enter the property himself as they were bound by provisions of the state's tenancy act.

The landlord was given control back of his property on Tuesday through a notice for vacant possession granted by the Magistrates Court, which allowed for an immediate eviction.

He said he felt violated.

``And I feel like the community has been let down.''