A luxury holiday home in a small village may be forced to close and be radically altered after claims it's causing "misery" for locals. The property on the on the edge of the Eryri (Snowdonia) national park in north-west Wales is a converted outbuilding that now boasts an 18ft window and was built without planning permission.

Gwynedd Council has been inundated with complaints from irate locals who say noisy party-goers are disturbing the peace of their rural village and say the house "looks like some huge ocean liner all lit up". The owner of the property, Karl Jones, was approached by North Wales Live for comment.

The council has vowed to "monitor the situation" and has issued an enforcement notice after the planning committee refused to grant retrospective planning permission for the site in the village of Penisarwaun in December. The property is advertised on platforms such as Booking.com and Airbnb and is called Plas Coch Barn.

Retired photographer Mick Sharp said he spoke for a number of neighbours who were fed up with the disruption caused by some rowdy guests. Concerns raised include loss of privacy due to large windows, increased traffic on the narrow lane, bright lights, noise from parties, use of a hot tub, privacy issues, loud music and littering.

In March 2025, the council served an enforcement notice on the property owner, Mr Jones, over unauthorised work. The owner has until April 2, 2025 to appeal the enforcement notice, after which it will take effect.

The order refers to "...without planning permission, conversion of an outbuilding into self-catering short-term holiday unit". If uncontested, the barn must cease to be used as a short term holiday let and reverted back to its "ancillary use" to the main house.

The order stated that the windows on the eastern elevation would have to be removed and all window openings blocked up. The local planning authority stated in the order that they "do not consider that planning permission should be granted, as the development has an adverse detrimental effect on residential amenities and the windows in the eastern elevation cause over- looking and create an intrusive effect on neighbouring properties".

Mr Sharp said that "issues have gone on since Autumn , 2022, when building work on the barn started". He added: "It just looks like some huge ocean liner all lit up in the night floating in the middle of the countryside. It's an alien structure, it bears no resemblance to the original barn.

"It is much bigger and although it may be in the same footprint, it's way out of proportion to the original barn. We would just like the thing knocked down.

"We accept that not everyone who comes to stay is a nuisance but a lot that do just seem to like loud music and making a lot of noise in hot tubs. Dealing with all this, including dealing with the council, it has all just been a total nightmare. We are just hoping this enforcement notice will actually be enforced."

A spokesperson for the council stated: "At a meeting in December 2024, Cyngor Gwynedd's planning committee refused a retrospective planning application to convert an outbuilding to a holiday let, at Plas Coch, Penisarwaun, Caernarfon, Gwynedd.

"In March 2025, the council served an enforcement notice on the owner of the property in relation to the unauthorised works, requiring steps to be undertaken to remedy the breach of planning control at the property. The owner of the property has until April 2, 2025 to appeal the enforcement notice, after which the notice takes effect The council is continuing to monitor the situation."