Carfax Conduit is a Grade I listed building in the South Oxfordshire local planning authority area, England. First listed on 18 July 1963. A C17 Conduit.
Carfax Conduit
- WRENN ID
- young-gateway-moss
- Grade
- I
- Local Planning Authority
- South Oxfordshire
- Constituency
- Didcot and Wantage MP: Olly Glover (LD)
- Country
- England
- Date first listed
- 18 July 1963
- Type
- Conduit
- Address
- Carfax Conduit, Nuneham Courtenay
- OS grid reference
- SU 537 976
- Coordinates
- 51.67523, -1.22443
- Source
- Historic England listing
Description
Carfax Conduit is a conduit that now serves as an eyecatcher, built in 1617 by mason John Clarke for Otho Nicholson. The lower part was rebuilt in 1686, likely by mason Thomas Wood, and in 1789, it was relocated to Nuneham Park by the 2nd Earl Harcourt. Constructed from limestone ashlar, it has a square plan. Each face of the lower stage features a recessed panel, flanking pilasters, and an entablature with a triglyph frieze that incorporates the arms of Oxford and the University. The ornamental pierced balustrade displays the letters ONON on each face and is topped with a cresting of standing figures, obelisks, and cartouches with heraldic beasts at the corners.
Supporting the octagonal superstructure are four ornamental flying buttresses, which contain eight niches with standing figures positioned between mermaid caryatids. The openwork, covered with fish-scales, is bordered by eight figures and topped with a finial consisting of two figures back to back. The intricate decoration presents a complex allegory with numerous references to the original purpose of the conduit. Tablets on two sides of the lower structure commemorate the establishment of the conduit in the park, in both English and Latin. This structure serves as a focal point within the significant landscape designed by Lancelot Brown.
Local climate
Carfax Conduit sits in a drier-than-average part of the UK, with an average of 730 mm of rain a year. This makes it drier than 80% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 72% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 52% 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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