The Big Windsor is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 19 May 1975. House. 1 related planning application.

The Big Windsor

WRENN ID
solitary-flint-starling
Grade
II
Local Planning Authority
Cardiff
Constituency
Cardiff South and Penarth MP: Stephen Doughty (Lab)
Country
Wales
Date first listed
19 May 1975
Type
House
Address
The Big Windsor, Butetown, CF10 5BU
OS grid reference
ST 190 744
Coordinates
51.46292, -3.16691
Source
Cadw listing

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

Description

The Big Windsor is a three-storey stuccoed building located on a corner site. The north front features four bays, a parapet, a modillion cornice, and a channelled blocking course. The second-floor windows have stucco architraves and hornless sashes. The first-floor windows include two hornless and two horned sashes, with cornices above their architraves. The ground floor has a channelled finish, with some pebbledash, and features windows set in six round-headed arches that have stucco archivolts and keystones. These arches are highlighted by Doric pilasters, and the spandrels are decorated with moulded vine leaves and grapes.

The east front has five bays with a central bay that projects, topped with a stepped parapet that includes Grecian detailing. The flanking bays mirror the north front, with all second-floor sashes being hornless and all first-floor sashes horned. The central bay contains a tripartite sash window on the second floor, supported by consoles above. The first-floor tripartite window has a balcony, pilasters, and an entablature adorned with medallions, with lamps on brackets flanking the balcony. A shallow Greek Doric portico with a fanlight is positioned above the entrance. The ground floor windows are large pane sashes.

To the south, there is an asymmetrical three-bay elevation that follows the design of the north front, but it lacks the arched ground floor. The west elevation has been altered with a modern full-height brick extension. Additionally, to the south, there is a length of iron railings on a low wall made of Radyr Stone.

Local climate

The Big Windsor sits in a wetter-than-average part of the UK, with an average of 1,080 mm of rain a year. This makes it wetter than 86% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 22 freeze-thaw cycles a year, fewer than 77% 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.
  • Sale history — 7 transactions since 2021
  • 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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