Blenheim House is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 24 March 1975. House.
Blenheim House
- WRENN ID
- guardian-gallery-dock
- Grade
- II
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 24 March 1975
- Type
- House
- Address
- Blenheim House, Chepstow
- OS grid reference
- ST 530 936
- Coordinates
- 51.63991, -2.67939
- Source
- Cadw listing
Description
Blenheim House is one of a pair of later Georgian houses. It features the lower left-hand three bays of a four-bay main road frontage. The walls are roughcast rendered and painted, topped with a machine tile roof. The house stands three storeys tall and has a three-window range, mostly with sash windows, although the top floor has casements, with a small-pane window on the left. The left end bay includes a two-storey segmental tri-partite bow window with sashes and fluted architraves, which matches the design of Birchfield at the upper end. The two central lower bays on the ground floor have 6-pane sashes flanking a 20th-century door that sits under a shallow bracketed hood with fluted side pilasters. The house is elevated above road level and accessed by steps through a walled courtyard. It is believed to retain Regency fittings.
Local climate
Blenheim House receives an average of 830 mm of rain a year. This makes it wetter than 55% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 59% of listed buildings.
It experiences an average of 39 freeze-thaw cycles a year, more than 76% of listed buildings. Of these, 18 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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