21, Calonne Road SW19 is a Grade II listed building in the Merton local planning authority area, England. House.
21, Calonne Road SW19
- WRENN ID
- forgotten-hammer-heath
- Grade
- II
- Local Planning Authority
- Merton
- Constituency
- Wimbledon MP: Mr Paul Kohler (LD)
- Country
- England
- Type
- House
- OS grid reference
- TQ 238 718
- Coordinates
- 51.43184, -0.2197
- Source
- Historic England listing
Description
No. 21 Calonne Road is a detached house built in 1909, designed by R Baillie Scott. The building features a combination of brick and some timber framing with plaster infill in the central bay, topped by a steeply pitched tiled roof. It has two storeys plus a roof storey and showcases an irregular design in the Arts and Crafts style.
The garden front consists of three main bays, with the outer bays projecting beneath gabled roofs. There are further hipped projections over a paved terrace on both the right and left sides. The right-hand gabled wing has three-light windows, while the left has four-light windows, both featuring timber mullions. The central bay is recessed and includes exposed timber framing, with five-light windows on both the ground and first floors. The centre three lights of the first-floor window rise to create a flat-topped half dormer. Additionally, there is a five-light corniced dormer window at the centre of the roof. Tall chimneys are positioned on both the right and left sides of the house.
Inside, the house remains largely intact, featuring an open well staircase, dado panelling on the ground floor, and wrought iron door and window fittings.
Local climate
21, Calonne Road SW19 sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 82% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 81% of listed buildings.
It experiences an average of 33 freeze-thaw cycles a year, fewer than 54% of listed buildings. Of these, 15 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- 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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