Trevarthen is a Grade II listed building in the East Hertfordshire local planning authority area, England. First listed on 2 October 1981. House. 4 related planning applications.

Trevarthen

WRENN ID
lost-gable-bramble
Grade
II
Local Planning Authority
East Hertfordshire
Constituency
Hertford and Stortford MP: Josh Dean (Lab)
Country
England
Date first listed
2 October 1981
Type
House
Address
Trevarthen, 136, Sheering Mill Lane, Sawbridgeworth, CM21 9ND
OS grid reference
TL 485 146
Coordinates
51.81103, 0.15337
Source
Historic England listing

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

Description

Trevarthen is a 17th century timber-framed house with a parallel 18th century front range, located on Sheering Mill Lane. The building is two storeys high, with the northwest and south sides plastered, while the east side is weatherboarded. It features steep half-hipped roofs that are now slated. The longer rear range on the west has a large central chimney and four windows on the first floor arranged in two pairs. The ground floor has 19th century, two-light, two-paned wood casements set flush, along with two and four-light transomed casements.

The southern front, which is the higher 18th century range, has an internal gable chimney on the west and a modern external gable chimney on the east. The symmetrical front has three windows, including two attractive flush sash windows with six-over-six panes, Gothic pointed heads, and interlaced glazing bars, positioned on either side of a wide 19th century projecting two-storey gabled porch. The porch has an open arched wooden frame below, enclosed by simpler Gothic casements above.

On the ground floor, the windows include an 18th century Gothic sash window with six-over-six panes on the west side and a three-light sash window with a combination of two-over-two, six-over-six, and two-over-two panes on the east side. All the 18th century Gothic windows have projecting drip moulds. The entrance features a four-panel door, with the upper two panels glazed and surrounded by a moulded architrave. The overall appearance of the building is picturesque.

Local climate

Trevarthen sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 95% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 91% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, fewer than 52% of listed buildings. Of these, 17 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
  • Sale history — 1 transaction since 2020
  • 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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