20 and 20a, St Andrew Street is a Grade II listed building in the East Hertfordshire local planning authority area, England. First listed on 12 April 1973. House.
20 and 20a, St Andrew Street
- WRENN ID
- ancient-nave-equinox
- Grade
- II
- Local Planning Authority
- East Hertfordshire
- Constituency
- Hertford and Stortford MP: Josh Dean (Lab)
- Country
- England
- Date first listed
- 12 April 1973
- Type
- House
- Address
- 20 and 20a, St Andrew Street, Hertford
- OS grid reference
- TL 323 126
- Coordinates
- 51.79689, -0.08155
- Source
- Historic England listing
Description
20 and 20A St Andrew Street is a house that has been converted into a shop with offices above. It dates from the 19th century, with a 20th-century shopfront and some alterations. The building is timber-framed and covered in stucco, topped with a Welsh slated roof that features a bracketed eaves cornice.
The exterior has two storeys, with a carriageway leading to a rear yard on the right side. The first floor includes four flush-set plate-glazed sash windows, which are framed by rusticated quoin surrounds, with quoins at the ends of the facade. The ground floor features a 20th-century shopfront, which retains a remnant of a late 19th-century fascia and a moulded console on the left. At the rear, there is a timber-framed and weatherboarded outshoot, surrounded by 20th-century single-storey outbuildings.
The building is part of a significant group with Nos 22 and 24 nearby. The interior has not been inspected.
Local climate
20 and 20a, St Andrew Street 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 84% of listed buildings.
It experiences an average of 33 freeze-thaw cycles a year, fewer than 55% 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
- 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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