Bayllols Manor is a Grade II listed building in the Vale of White Horse local planning authority area, England. First listed on 25 October 1951. Manor house. 7 related planning applications.
Bayllols Manor
- WRENN ID
- stranded-gateway-sedge
- Grade
- II
- Local Planning Authority
- Vale of White Horse
- Constituency
- Didcot and Wantage MP: Olly Glover (LD)
- Country
- England
- Date first listed
- 25 October 1951
- Type
- Manor house
- Address
- Bayllols Manor, High Street, Harwell, OX11 0EY
- OS grid reference
- SU 491 893
- Coordinates
- 51.601, -1.29123
- Source
- Historic England listing
Description
Bayllols Manor is a manor house, now a residential property, with origins dating back to around 1280. It features a three-bay range that forms a cross-wing to the left, alongside a hall and a four-bay cross-wing to the right, which were constructed around 1365. The hall was floored in 1589, and there have been some later alterations. The building has a brick plinth and is constructed with large timber framing that is tension-braced, with roughcast infill. It has an old plain-tile complex roof with gabled cross-wings on either side, and a massive brick ridge stack located to the left of center, along with other brick stacks.
The manor has a double-ended hall house plan, is single storey with an attic, and features a two-bay central range flanked by two-storey cross-wings. There is a mid-14th century porch to the left of center, which includes an ogee-headed wood archway and a gabled roof with cusped bargeboards. The entrance has a two-centre arched doorway with a mid-14th century plank studded door. To the right of center, there is a sash door that likely has a 19th-century open gabled porch. The fenestration is irregular, consisting of three-light 19th-century casements, and there is a gabled dormer to the right of center.
Inside, the manor features crown-post roofs in the cross-wings and a base-cruck central truss in the original hall, which has an embattled cross-beam with a crown-post above. There are 19th-century winder staircases to the left and right of center, and original two-centre wood arched doorways leading to the screens passage. Moulded brackets support three beams carrying the 1589 floor of the hall, with one bracket dated. The dining room, located in the former hall, boasts a massive open fireplace with a wooden bressumer.
Historically, Bayllols Manor was likely owned by the Bayllol family from around 1200 to 1350, then by the Brounz family from approximately 1350 to 1437, before passing by descent until it was purchased by William Waynflete, Bishop of Winchester, in 1484.
Local climate
Bayllols Manor 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 79% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 69% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 51% 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
- Sale history — 4 transactions since 2014
- Related listed building consents — 7 applications
- 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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