Hillcroft is a Grade II listed building in the North Hertfordshire local planning authority area, England. First listed on 16 December 2009. House.
Hillcroft
- WRENN ID
- dusk-steel-fen
- Grade
- II
- Local Planning Authority
- North Hertfordshire
- Constituency
- Stevenage MP: Kevin Bonavia (Lab)
- Country
- England
- Date first listed
- 16 December 2009
- Type
- House
- Address
- Hillcroft, 7, Deards End Lane, Knebworth
- OS grid reference
- TL 245 204
- Coordinates
- 51.86906, -0.19186
- Source
- Historic England listing
Description
Hillcroft is a two-storey house built in 1901 as a pair of semi-detached cottages. The design was by Edwin Lutyens, who converted the cottages into a single house in 1904, adding a rear extension at that time. A further two-storey extension was added mid-20th century to the south. The house is constructed of red brick laid in stretcher bond, with a gable roof covered in plain tiles.
The house has a 'T' shaped plan, with a front range and a projecting rear extension. The façade features two central angled ridge stacks, each with three interlocking flues and pots. A central recessed porch provides access to a contemporary two-leaf, part-glazed entrance door, with three dormers above. The rear elevation incorporates a single-storey, double-height rear extension, and an end stack. Timber casement windows are present throughout, although some have been replaced in the later 20th century.
The interior reflects the 1904 conversion, but the original plan of the 1901 cottages is still discernible. A brick-built inglenook fireplace on the ground floor is flanked by recessed arched panels. A cast-iron grate remains in a first-floor bedroom fireplace. Contemporary battened doors are found throughout. The Lutyens rear extension is partly double-height, with a brick-built fireplace against the rear wall; the stack above is recessed, emphasising the casement window above the fireplace.
Hillcroft was designed in 1901 by Edwin Lutyens for his brother-in-law, Earl Lytton of Knebworth House. Earl Lytton commissioned Lutyens to design several other properties and a golf clubhouse in Deards End Lane prior to World War I. Initially designed as a pair of cottages for estate workers, the house was converted into a single residence in 1904 with the addition of the Lutyens rear extension.
Local climate
Hillcroft sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 77% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 61% 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.
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- 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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