This photograph posted by the Ulster Architectural Heritage group shows what it describes as 'water ingress' in the Austins building.
A group set up to protect historic buildings in Northern Ireland has raised a concern about the state of Derry's famous Austins store.
The Austins building has been unused since the department store business closed in 2016.
The current owners have spoken previously about their plans to bring the building back into use.
However, the Ulster Architectural Heritage (UAH) group has highlighted an issue with the building.
In a short report published on its Facebook page last week, the UAH said there was a problem with water getting into the interior of the Austins building.
The report stated: “Externally the building is in fair condition however from review the building is suffering from water ingress into the interior of the building which should be addressed imminently to ensure no further deterioration of the building fabric occurs.”
The UAH report said that the current Austins building dated from 1907, but that a department store had been operating on the city centre site from 1830.
The heritage group said that this meant the local store predated Harrod’s Department Store in London by 15 years and Macy’s Department Store in New York by 25 years.
The UAH report said that whilst the interior of the Austins building retains only its 'impressive' staircase, the exterior retains much of its 'flamboyant detailing' and is one of the most impressive buildings in Derry.
Austin's department store closed in 2016 with the loss of 53 jobs.
The store was opened by Thomas Austin in 1830 and remained in his family until the 1970s when it was bought by Derry businessman, Larry Hasson.
In 2014, the store was placed into administrative receivership.
The receiver sold the trading side of the business to Hassonzender Ltd and the store remained open until March 2016.
If you have a story or want to send a photo or video to us please contact the Derry Now editorial team on 028 7129 6600 for Derry City stories Or 028 7774 3970 for County Derry stories. Or you can email firstname.lastname@example.org or email@example.com at any time.
Subscribe or register today to discover more from Derrynow.com
Buy the e-paper of the Derry News and the County Derry Post here for instant access to Derry's premier news titles.
Keep up with the latest news from Derry with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.