Letts Green Farmhouse is a Grade II listed building in the Sevenoaks local planning authority area, England. First listed on 22 October 1971. Farmhouse. 5 related planning applications.

Letts Green Farmhouse

WRENN ID
last-pinnacle-bistre
Grade
II
Local Planning Authority
Sevenoaks
Constituency
Sevenoaks MP: Laura Trott (Con)
Country
England
Date first listed
22 October 1971
Type
Farmhouse
Address
Letts Green Farmhouse, New Year's Lane, Knockholt, TN14 7PG
OS grid reference
TQ 459 593
Coordinates
51.3141, 0.09295
Source
Historic England listing

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

Description

Letts Green Farmhouse is an early 19th-century farmhouse, likely incorporating an older timber-framed structure. It has two storeys and three windows facing east and three windows facing south. The building is topped with a high-pitched, hipped tiled roof. The walls are flint with red brick window dressings and quoins. The east front features recessed, coved French windows with semi-circular fanlights on the ground floor. The south front has segment-headed windows on the first floor.

Local climate

Letts Green Farmhouse receives an average of 750 mm of rain a year. This makes it drier than 70% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 71% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 18 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2016
  • Related listed building consents — 5 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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