20, St John Maddermarket is a Grade II listed building in the Norwich local planning authority area, England. First listed on 26 February 1954. Shop. 2 related planning applications.
20, St John Maddermarket
- WRENN ID
- silver-merlon-sunrise
- Grade
- II
- Local Planning Authority
- Norwich
- Constituency
- Norwich South MP: Clive Lewis (Lab)
- Country
- England
- Date first listed
- 26 February 1954
- Type
- Shop
- Address
- 20, St John Maddermarket, NR2 4SF
- OS grid reference
- TG 229 087
- Coordinates
- 52.63052, 1.29275
- Source
- Historic England listing
Description
No. 20 St John Maddermarket is a former building of unknown use that has been converted into a shop. It dates from the late 16th century and was raised in the 18th century. The exterior is rendered and features rusticated quoins, with a pantile roof. The building stands three storeys high and has a jetty at the first floor. It has two bays, with a central door flanked by fluted pilasters and a plain architrave, topped with a small rectangular fanlight. The windows are sash style throughout, with glazing bars on the ground floor, small flat hoods on consoles at the first floor, and eared surrounds at the second floor. A paired bracket cornice completes the design.
Local climate
20, St John Maddermarket sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 88% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 95% of listed buildings.
It experiences an average of 24 freeze-thaw cycles a year, fewer than 75% of listed buildings. Of these, 13 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 — 2 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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