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

Seldown

WRENN ID
steep-footing-vale
Grade
II
Local Planning Authority
Hertsmere
Constituency
Hertsmere MP: Sir Oliver Dowden (Con)
Country
England
Date first listed
12 August 1985
Type
House
Address
Seldown, 23, the Avenue
OS grid reference
TL 251 020
Coordinates
51.70303, -0.19106
Source
Historic England listing

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

Description

Seldown is a house built in 1904, as indicated by the datestone in the porch. It was designed by Sir Bannister Fletcher and is constructed of roughcast brick with a grey-green slate hipped roof, showcasing the Arts and Crafts style. The building has two storeys and an attic, featuring a three-bay front.

On the ground floor, there is a small four-light stone mullioned window in the center, with a recessed entrance to the left under a segmental skeleton arch. The flanking bays have semi-circular bows with eight-light glazing bar casements beneath a moulded timber cornice that extends over the central bay. The first floor features casements that break the eaves, with moulded timber cornices; the central window has six lights with four lights forming a triangular bracketed oriel, while the flanking windows have five lights each. Battered buttresses are present at both ends of the front wall. The sweeping hipped roof has overhanging eaves with boarded soffits and a four-light central dormer. There is a stack on the front pitch to the right of center and end stacks linked to the hips, with the larger stack on the left, all stepped up and featuring exposed brick caps.

At the rear, there is a three-light loggia window with a decorative timber frame, along with a later link to a garage block on the left. The interior has not been inspected.

Local climate

Seldown 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.

More on this building

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