20 St. James' Street is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 27 June 1952. House, flat. 1 related planning application.
20 St. James' Street
- WRENN ID
- quiet-keystone-ivory
- Grade
- II
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 27 June 1952
- Type
- House, flat
- Address
- 20 St. James' Street, Monmouth, NP25 3DL
- OS grid reference
- SO 510 129
- Coordinates
- 51.81275, -2.71132
- Source
- Cadw listing
Description
Nos. 20 and 24 St. James' Street form a double-depth building with a central entrance, likely built in the 18th century. The front is finished with roughcast and painted, topped by a Welsh slate roof. The building is three storeys high and has five windows across the front, with a wider gap between bays 2 and 3 where a prominent stack is situated. A central doorway features a semi-circular head, a broken pediment, and fluted Doric columns, leading to a six-panel door. The windows are plain sash windows with 6 over 6 panes, with the second-floor windows having 3 over 6 panes; all have stone sills. A modillion eaves cornice runs along the top of the front elevation. The roof is plain, with a main stack between bays 2 and 3 and a smaller stack on the right-hand gable. A small window is visible in the right-hand gable. The rear elevation is not visible, as it is partly hidden by the adjacent building at No. 37 Whitecross Street.
Although addressed as both No. 20 and No. 24, the building appears to have only one entrance. The interior, which was recorded as having a stick baluster open-well staircase, has been converted for use as flats.
Local climate
20 St. James' Street receives an average of 820 mm of rain a year. This makes it wetter than 52% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 57% of listed buildings.
It experiences an average of 42 freeze-thaw cycles a year, more than 80% of listed buildings. Of these, 19 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 — 1 transaction since 2023
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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