Glan-Honddu is a Grade II* listed building in the Powys local planning authority area, Wales. First listed on 16 February 2005. Country house. 1 related planning application.

Glan-Honddu

WRENN ID
rooted-pediment-bone
Grade
II*
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
16 February 2005
Type
Country house
Address
Glan-Honddu, Llandefaelog Fach, Brecon, Honddu Isaf, LD3 9PP
OS grid reference
SO 030 319
Coordinates
51.9776, -3.41306
Source
Cadw listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Glan-Honddu is a late Georgian country house. The exterior is painted roughcast with a hipped slate roof and two rendered chimneys at the centre. The house has two storeys and two main facades: a three-bay east entrance front and a south garden front with a central three-window canted projection and single bays at either end. A squared stone plinth runs along the base. The windows are hornless sash windows with thin glazing bars and stone sills; twelve panes to the first floor and fifteen panes to the full height on the ground floor. The south front originally had a hipped veranda, which has been replaced by a 20th-century wood pergola. The east side features a central arched doorway with a radiating-bar fanlight and double-panelled doors, set within an altered porch. The porch retains original pilaster responds and Roman Doric columns but has a 20th-century entablature and flat top. The west side is irregular, with four bays, including a long twelve-pane sash window on the first floor (the right-hand one being dummy) and two shorter windows in the centre. The ground floor on the right has a long fifteen-pane sash window, as on the south front. The left side has a group of three windows, with a twelve-pane sash between two nine-pane sashes; a conservatory is said to have previously occupied this area. A lower, two-storey, two-bay rear wing extends to the northwest, with a hipped roof to the north and a stack at the north end.

Inside, a spine hall runs from the front door, with a stair hall in the centre of the house and three principal rooms to the south. The kitchen is located at the northwest. The rooms feature six-panel doors in moulded surrounds with square rosettes, and panelled shutters. The inner half-glazed front door has fluted pilasters inside. A purple marble chimneypiece is on the north wall, with roundels at the top angles. A panelled elliptical hall arch stands on fluted pilasters. The cantilevered staircase on the north wall has a curved design with scrolled tread ends, thin turned balusters and a continuous curving rail; an arched niche is incorporated into the stair, with a glazed round lantern above. A similar balustrade is on the landing. The southeast study has a plain cornice and a white marble fireplace with roundels in the upper angles. The south-facing room has a canted bay window to the garden, a plaster moulded ceiling with a border and central acanthus oval, slightly domed with swirled pendant leaves, and a fireplace with anthemion decoration. The southwest room has remarkable plasterwork to the ceiling border, depicting naturalistic undercut vine leaves and grapes, with an acanthus rose at the centre, and a fossil-marble fireplace with roundels at the upper angles.

Local climate

Glan-Honddu sits in one of the wettest parts of the UK, with an average of 1,170 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 79% of listed buildings.

It experiences an average of 50 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 28 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 5 transactions since 2010
  • Related listed building consents — 1 application
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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Nearby listed buildings

  1. Lodge to Glan-Honddu Grade II 286 m
  2. Entrance gatepiers and walls to Glan-Honddu Grade II 296 m
  3. Llandefaelog House Grade II 456 m
  4. Mausoleum to Watkins family of Penoyre Grade II 530 m
  5. Lychgate to Church of Saint Maelog Grade II 543 m
  6. Churchyard cross and Dickinson vault Grade II 544 m
  7. Church of Saint Maelog Grade II* 558 m
  8. Bridge over Afon Honddu Grade II 632 m
  9. The Old Rectory Grade II 671 m
  10. Entrance gatepiers and gates to Penoyre Grade II 1.5 km