3 February 2012
Last updated at 15:34
A project to find the ages of historic buildings by dating their timbers may have found one of Wales' oldest homes, in the Conwy Valley.
Tree-dating, or dendrochronology, is being used to examine some properties, including the one in the Conwy Valley, as part of a project established by enthusiasts in 2008 to discover more about the history and development of 16th and 17th Century Tudor and Jacobean houses in north west Wales.
The style and use of a cruck frame - a tree trunk used to support a roof - leads some specialists to think the cow shed near historic house Plas Tirion, in Llanrwst, could pre-date Wales' oldest domestic houses such as Hafod-y-Garreg in the Wye Valley, which dates to 1402.
Previously, architectural historians thought north west Wales was a 'back water', according to senior buildings investigator Richard Suggett from the Royal Commission on the Ancient and Historical Monuments of Wales (RCAHMW).
Ned Scharer, who owns the building with his wife Sophie, works in building conservation. He said that even after the tests he was not sure whether it would ever be known for sure that the building was the oldest house in Wales as the timbers themselves may prove to be old, and could have been reused. The results of the tests are due in March.