Post Office is a Grade II listed building in the Mid Suffolk local planning authority area, England. First listed on 29 July 1955. House with shop. 3 related planning applications.

Post Office

WRENN ID
bitter-porch-grove
Grade
II
Local Planning Authority
Mid Suffolk
Constituency
Waveney Valley MP: Adrian Ramsay (Green)
Country
England
Date first listed
29 July 1955
Type
House with shop
Address
Post Office, the Street, Thornham Magna, IP23 8HB
OS grid reference
TM 104 710
Coordinates
52.29749, 1.08421
Source
Historic England listing

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

Description

The Post Office in Thornham Magna is a house that was later converted into a shop, built in 1745, as indicated by the date on the rear wall. It was extended around 1800 and again in the 19th century. The building is constructed of red brick with timber-framed walls and additional structures at the rear, which are colourwashed and plastered. It features a steeply pitched roof covered with plain tiles and has five bays across two storeys.

The entrance is located to the right of the centre, with steps leading up to a recessed half-glazed door that has a projecting hood. There was formerly a second entrance to the left of centre. The windows are 12-pane 20th-century pseudo-sash casements set in shallow reveals, with segmental heads on the ground floor and a blind window above the entrance. The building has a plinth, a plat band, and boxed eaves. There is an internal axial stack at the left end. The gable ends feature double plat bands and coped parapets with kneelers at the rear.

At the rear left, there is a one-bay, one-storey and attic addition that has scattered casements and an internal axial stack, along with a further bay added to the rear. To the rear right, there is a lean-to addition that includes a glazing bar casement. Inside the lean-to addition, the original rear wall displays panelled pargetting and the date 1745 in glass, along with ogee stop-chamfered cross axial binding beams, run-out chamfered joists, and a butt purlin roof.

Local climate

Post Office sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 92% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 63% of listed buildings. Of these, 16 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
  • Related listed building consents — 3 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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