Summerswood Farm House is a Grade II listed building in the Hertsmere local planning authority area, England. First listed on 12 August 1985. House.

Summerswood Farm House

WRENN ID
narrow-bracket-river
Grade
II
Local Planning Authority
Hertsmere
Constituency
Hertsmere MP: Sir Oliver Dowden (Con)
Country
England
Date first listed
12 August 1985
Type
House
Address
Summerswood Farm House, Summerswood Lane, South Mimms and Ridge
OS grid reference
TQ 215 995
Coordinates
51.68146, -0.24383
Source
Historic England listing

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

Description

Summerswood Farm House is a house that likely dates from the late 17th century, with alterations and extensions made in the mid to late 19th century and 20th century. The original structure features an exposed timber frame with brick nogging above a brick base, while the extensions are made of brick. The entire building is either whitewashed or rendered, and it has slate and tile roofs. Originally, the house was L-shaped with a three-bay lobby entry front. It has been extended and re-roofed, now featuring gables at the front. The house is two storeys high, with a central entrance that includes a gabled, weatherboarded porch. On either side of the entrance are 20th-century two and three-light casement windows, while the first floor has horizontal sliding sashes and a central casement. The front has three gables, with the central gable being much smaller and featuring sham timber studs. There is a large square central stack on the middle ridge, which is corbelled out below the original cap and was extended upwards in the 19th century. A catslide roof covers a brick addition to the left, and the original rear wing to the left has an external stack on the rear gable. There is an entrance to the rear on the left return, and 20th-century casements on the right return. The interior has not been inspected.

Local climate

Summerswood Farm House 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 91% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 90% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 54% of listed buildings. Of these, 15 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.

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