Magna Carta House is a Grade II listed building in the Windsor and Maidenhead local planning authority area, England. First listed on 26 April 1984. House. 4 related planning applications.

Magna Carta House

WRENN ID
gentle-rampart-nightshade
Grade
II
Local Planning Authority
Windsor and Maidenhead
Constituency
Windsor MP: Jack Rankin (Con)
Country
England
Date first listed
26 April 1984
Type
House
Address
Magna Carta House, Magna Carta Lane, Magna Carta Island, Wraysbury, TW19 5AF
OS grid reference
SU 999 730
Coordinates
51.44723, -0.56377
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Magna Carta House is a Grade II listed building originally constructed in 1834 by George Simon Harcourt to commemorate the sealing of the Magna Carta. This small, irregular stone house is designed in a 'Norman' style, featuring many gables and an open porch. It has high-pitched roofs made of Welsh slate and cylindrical stone chimneys. The windows are round-headed with chamfered and moulded surrounds, and some are paired under drip moulds.

An early 20th-century extension has been added in a similar style, with painted brick walls and Welsh slate roofs that match the pitch of the original chimneys. The building is two storeys high with irregular fenestration that closely relates to the original design.

Inside, the house boasts much imported Jacobean panelling of good quality, along with some later stained glass. There are stone chimney pieces, including one that is round arched and another that is square and hooded. In the Magna Carta Room, there is an octagonal fixed wooden table with turned legs, featuring a circular commemorative stone let into the top.

Local climate

Magna Carta House 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 81% 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 33 freeze-thaw cycles a year, fewer than 53% of listed buildings. Of these, 14 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 — 3 transactions since 1996
  • Related listed building consents — 4 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
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