Gwynedd’s Grade II* listed Plas Nannau has undergone emergency work.

Located at Llanfachreth near Dolgellau, it has fallen into disrepair over the years.

In 2019, thieves removed tonnes of lead its roof, accelerating its decline.

On Wednesday, 9 September, members of Eryri National Park Authority received an update on the state of the building during a planning meeting.

A report by Jane Jones, Principal Planning Officer (Compliance), stated: “Following on from a productive site meeting held back in December 2025, deliberations have continued.

“Emergency works to make Nannau watertight have taken place. These works have prevented any further water ingress into the building, and it is now able to start drying out.

“Nannau has also been emptied of chattels with any items relating to Nannau being stored in a large on-site container.

“A pre-application enquiry has been received and responded to, and although a large quantity of information is required before informing a substantive response; this submission has resulted in an on-site meeting with a representative from CADW.

“The authority now awaits additional details to provide a full response to the pre-application enquiry.”

Sharing images of the site with members, she said: “When they went in January to start works they took drone footage going round, showing the state of the building before they started work and it was pretty poor.

“Internally, the actual main staircase going up to the second floor has actually fallen down.

“Now, the only access to the building is through the front door, but you can’t access the second floor, so scaffolding has been put up around the building to gain access through a first floor window.”

The roof has been made watertight, slates taken and stored for future use and re-felting was planned, she said.

“Water ingress has now stopped completely, whereby during the summertime when we have accessed the building, it is quite clear it is already starting to dry out, which is obviously what we needed to do,” she said.

“A pre-application inquiry is now in, and discussions are ongoing with the agents. Hopefully there will be more progress moving forward.”

Cllr Delyth Russell said there was “so much talk about this in the community”, adding it was “good to have this out in the open, now”, and asking asked if an ownership change had “changed anything,” and if the authority was “expecting a new application from the new owners”.

She also queried how much money had been spent by the authority.

Ms Jones replied: “So far, everything seems to be quite promising, we are having the correct dialogue, they seem amenable regarding requests, and so on.

“Hopefully, so far, communication has been good, better than in other years. So we will have to wait and see what transpires next in terms of additional pre-application inquiries, or it may come to the application.

“Hopefully the new owners will be submitting a new application.

“To date we have not spent any money, the emergency works have been paid by the owner.”