Church of St Mary is a Grade I listed building in the Fareham local planning authority area, England. First listed on 18 October 1955. A Medieval Church.
Church of St Mary
- WRENN ID
- tangled-screen-swift
- Grade
- I
- Local Planning Authority
- Fareham
- Constituency
- Fareham and Waterlooville MP: Suella Braverman (RUK)
- Country
- England
- Date first listed
- 18 October 1955
- Type
- Church
- Period
- Medieval
- Address
- Church of St Mary, Castle Street
- OS grid reference
- SU 625 044
- Coordinates
- 50.83661, -1.11337
- Source
- Historic England listing
Description
The Church of St Mary, built around 1133, is located inside the walls of the Roman fort in Portchester. It was founded by Henry I as a small priory for Augustinian Canons, who soon relocated to Southwick. The church underwent restoration in 1710 by Queen Anne's Bounty and again in 1888. Originally designed in a cruciform shape, the south transept is now missing. The church features a short tower at the crossing topped with a pyramidal roof, and its exterior is rendered with an old tiled roof. The nave is aisle-less and has four round-arched recessed Norman windows, while the transept includes one window with another above it. The Norman west window is distinguished by round-arched panels filled with quatrefoil designs within circles. A notable feature is the fine Norman west doorway, which consists of three orders. Inside, there are references to Elizabeth I and Queen Anne, whose body rested in the church in 1710. The interior also includes arcading along part of the walls and a squint in the north wall near the chancel arch. The church is part of a group with Portchester Castle, the churchyard walls, the lamp in the churchyard, and the lychgate.
Local climate
Church of St Mary receives an average of 810 mm of rain a year. This makes it drier than 52% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.
It experiences an average of 19 freeze-thaw cycles a year, fewer than 79% of listed buildings. Of these, 8 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.
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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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