Dashboard · Argentina programme · Replica plans · 3D model · How measured

Great House Farm, rebuilt from the records

Great House II, planned near Puerto Madryn in Patagonia, is to be a faithful replica of Great House Farm (Tŷ Mawr): the former manorial house that stood beside St Dochdwy's Church in Llandough until December 1988. Nothing has been built in Argentina yet. This page is where the replica takes shape: the house rebuilt in plans and in 3D from the surviving survey records, with every number traced to its source and given an honest tolerance.

3D massing view of Great House Farm with its farm ranges, seen from the south-east
The massing model: the farmhouse from the 1974 survey and the farm ranges from the map of about 1900. Heights are inferred. Turn it in 3D.

Two places, one house

The vision

In Wales: the guided tour in Llandough walks the public lanes and the churchyard around the place where Great House Farm stood, and these plans let visitors see the house where it was.

In Patagonia: the planned replica would rebuild the same house, room for room, at the scale recorded here: the hall with its end fireplace, the cross passage, the kitchen with its great fireplace and chamfered beams, and the north wing over its barrel-vaulted cellar. Visitors would then be able to follow the story from the Vale of Glamorgan to the Welsh settlements of Chubut.

Read more on the Patagonia half of the estate and the Argentina programme.

Plans and drawings

Scaled, dimensioned
Dimensioned ground-floor plan of Great House Farm
Ground floor, 1:100 when printed at 100%. Room sizes from the 1974 survey (measured in feet, converted). Dashed brown items are inferred.
Site plan of the farmhouse, the farm ranges and the church
Site plan, 1:500 when printed at 100%. House placed on the OS map of about 1900 to within about 3 m.
South elevation of the farmhouse, massing only
South front, massing only. Length scaled; heights inferred from the 1988 photograph.

Downloads for architects

Open formats, metres

The local grid starts at the south-west corner of the house, at British National Grid E 316797.5 N 173305.9 (within about 3 m). How this was measured.

What the records do not yet show

Open research
  • East 19th-century extension: Card records "further extensions" on the east side; no size. See Range A
  • First floor and roof trusses: "it was not possible to examine the first floor and roof trusses"
  • Yard and boundary walls: Open yard between the house and the ranges on the 25-inch sheet; walls not traced in this pass
  • Heights of every building: no measured section or elevation survives in the records held; the heights here are inferred.
  • The farm ranges: only their outlines on the map of about 1900 are held; their uses, heights and openings are not recorded.

Each gap is open as a research task and listed in the missing records register as MR-0060. Better records will replace the inferred values here.

Version 0.1, 31 October 2026. A starting point for design work, not a survey: check the register before relying on any figure.

Small print: dotted links explain a word (see the glossary); amber-shaded links list every name the records use for the same thing.