Talysarn Hall was built during the 18th Century and modified and extended in the 19th and early 20th. House is symmetrical and of three stories over a basement with the central portion three bays wide. Chimney stacks on east and west walls of central portion.

Central portion is constructed of slate blocks, internally partially covered with plasterwork. Central doorway with projecting brick porch, now missing the roof structure. Walls rendered with an ashlar effect marked into surface. Below the render on the east wall of the central portion can be seen a slate tile hung facing. Roof missing, although some timbers survive over the south facing front wall.

Attached to the east wall of the central portion is a two storey, two bay addition constructed of brick, the second bay of which is canted backwards from the line of the central portion and attached bay. Attached to the west wall of the central portion is an asymmetrical two storey, two bay addition constructed of brick. Attached to rear of this addition is a narrow two bay extension.

Spencer Gavin Smith, RCAHMW, 11 April 2012

2.

Statement of Significance: 

Two contrasting dwellings within the Nantlle Component Part which illustrate the levels of land-ownership and social ambition amongst local landowners from the early period of quarrying from the late eighteenth century onwards, and the gradual transformation of a rural environment into an industrial landform. Both the vernacular qualities of Tal y Sarn Uchaf hamlet and the way it became a nucleus for a tiny industrial settlement contrast with the social ambition of the attempts at a Georgian order in Plas Tal y Sarn and in the creation of its garden; the perilous proximity of the Dorothea Quarry ( NPRN 40539) pit to the gardens of the Plas indicate the scale of change in the area and the nearness of quarry and dwellings.       

This site is part of the Slate Landscape of Northwest Wales World Heritage Site, Component Part 3: Nantlle Valley Slate Quarry Landscape. Inscribed July 2020.     

Sources:    

Louise Barker & Dr David Gwyn, March 2018. Slate Landscapes of North-West Wales World Heritage Bid Statements of Significance. (Unpublished Report: Project 401b for Gwynedd Archaeological Trust)    

Tirwedd Llechi Gogledd Orllewin Cymru / The Slate Landscape of Northwest Wales. Nomination as a World heritage Site (Nomination Document, January 2020)    

Wales Slate World Heritage Site https://www.llechi.cymru/     

H. Genders Boyd, RCAHMW, January 2022