1 Castle Hill is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 28 January 1963. House. 1 related planning application.

1 Castle Hill

WRENN ID
crooked-casement-sunrise
Grade
II
Local Planning Authority
Cardiff
Constituency
Cardiff West MP: Mr Alex Barros-Curtis (Lab)
Country
Wales
Date first listed
28 January 1963
Type
House
Address
1 Castle Hill, St Fagans, St. Fagans, CF5 6EJ
OS grid reference
ST 120 770
Coordinates
51.48595, -3.26845
Source
Cadw listing

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

Description

Nos. 1 and 2 Castle Hill are two-storey houses built with local rubblestone walls, featuring red brick dressings and a colourwashed finish on the front walls. They have thatched roofs with eyebrow dormers. The layout is single depth with small rear wings, each consisting of two window bays and a central door bay. The houses have casement windows, with two lights above and three lights below; these diamond-paned casements were altered in the late 20th century. There are three brick chimneys with paired diamond-set shafts, likely added around 1855. The original rear walls still exist and have small rectangular window openings, but the rear wings, which have slate roofs, were added in the mid to late 19th century (the rear elevation was not seen during the resurvey). A trellised porch is also present. The interior layout and details were completely changed around 1970.

Local climate

1 Castle Hill sits in a wetter-than-average part of the UK, with an average of 1,110 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.

It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 8 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.
  • No sale records on file
  • 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. 2 Castle Hill Grade II 8 m
  2. 3 Castle Hill Grade II 16 m
  3. 4 Castle Hill Grade II 22 m
  4. Stable Court at St Fagans Castle Grade II 28 m
  5. Laundry Cottage Grade II 32 m
  6. Front Garden Wall Grade II 33 m
  7. South Wall of Forecourt at St Fagans Castle Grade II 36 m
  8. South Wall of the Entrance Garden separating it from the Stable Court at St Fagans Castle Grade II 45 m
  9. South Boundary Wall of the Stable Court including the Drinking Fountain on Castle Hill Grade II 47 m
  10. Lead Cistern in the east forecourt of St Fagans Castle Grade II* 54 m