30a, Hendon Avenue is a Grade II listed building in the Barnet local planning authority area, England. First listed on 28 November 1996. House.
30a, Hendon Avenue
- WRENN ID
- narrow-alcove-frost
- Grade
- II
- Local Planning Authority
- Barnet
- Constituency
- Finchley and Golders Green MP: Sarah Sackman (Lab)
- Country
- England
- Date first listed
- 28 November 1996
- Type
- House
- OS grid reference
- TQ 244 906
- Coordinates
- 51.60075, -0.20444
- Source
- Historic England listing
Description
House, built in 1959 by Geoffry Powell of Chamberlin, Powell and Bon for Dr and Mrs E Rossdale. The house is an important domestic work by this practice, reflecting an English Miesian architectural style. The central core is constructed of dark charcoal grey Uxbridge flint bricks, projecting to form a clerestory, with timber cladding that has been stained dark. The projecting elements are supported by three-inch diameter steel tubes set in concrete footings. The upper storey is framed with a broad white-painted timber surround, with dark cladding within the frame. All living accommodation is on one floor, raised a full storey above ground level to incorporate garages underneath. The brick core forms a ten-foot square space in the center of the plan, serving as a partially open fireplace and sitting area. Living and dining areas are arranged to one side of this core, with a kitchen beyond, accessible from the dining end and a passageway serving three bedrooms and two bathrooms. Windows are of white-painted timber, some of which have been replaced with UPVC units. The south-east front features two garages under an overhang, with a timber stair rising from a raised paved area to a deck by the entrance. A clerestory projects above the main roofline. The entrance door is timber, with two glass panes, sheltered by a later porch canopy. Continuous windows to the left of the door include a full-height opening section with a roller blind above. Inside, the lobby leads to a hall area with clerestory lighting and an exposed brick wall of the core. A sliding partition to the left leads into an L-shaped living room, where the brick core creates a semi-enclosed central sitting area with a hearth accessible from two sides, a white flue muffler rising from a black tiled shelf, and fixed timber benches on two sides, along with a clerestory light. The dining end features a hatch and two-way unit to the kitchen. Bedrooms have suspended shelf and drawer units running wall-to-wall. Two bedrooms, near the entrance, are linked by a folding timber partition wall. As noted by Ian Nairn, the architects "saw the problem fresh, and the result is delightful.”
Local climate
30a, Hendon Avenue 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 98% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 66% of listed buildings. Of these, 13 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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- 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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