Ivy House is a Grade II listed building in the Hertsmere local planning authority area, England. First listed on 22 October 1979. House. 2 related planning applications.
Ivy House
- WRENN ID
- shadowed-doorway-wagtail
- Grade
- II
- Local Planning Authority
- Hertsmere
- Constituency
- Hertsmere MP: Sir Oliver Dowden (Con)
- Country
- England
- Date first listed
- 22 October 1979
- Type
- House
- Address
- Ivy House, 35, High Street, WD23 1BD
- OS grid reference
- TQ 131 952
- Coordinates
- 51.64468, -0.36604
- Source
- Historic England listing
Description
Ivy House is a house, now used as offices, likely dating from around 1680, as indicated by a rainwater head, with substantial alterations and extensions in the early 18th century, the mid-18th century, and the early to mid-19th century, with further additions in the early and late 20th century. The house is constructed of red brick with some stone dressings, and has tiled roofs. It has two storeys and seven bays, divided into three builds: a three-bay original block in the middle, a mid-18th century block to the right, and an early to mid-19th century bay to the left. The mid-18th century block features an entrance on the left, with two steps leading up to a six-panelled door, a Gothic tracery semi-circular fanlight above, panelled reveals, and a doorcase with brackets supporting a frieze with urns and a dentil cornice. Flush glazing bar sash windows are set in moulded architraves with stone sills and gauged brick flat arched heads. There is a plinth and dentilled brick eaves. The roof is a double span hipped roof. The original three bays on the left are slightly set back. Smaller sash windows are present, and a blind window is in the centre of the first floor, with eight panes to the left. A cross axial stack is located to the right. A gabled bay from the 19th century projects forward on the left, with two ground floor and one first-floor sashes; the first-floor window contains a stone key block and there is a blind oculus in the gable, featuring a diagonally set brick course. A left-end stack is also present. The 19th-century block extends to the rear left at an angle. The right return has a continuous plinth and dentilled eaves, and features two large, extruded stacks with offsets and oversailing. A reset rainwater head displays the date 1680. The rear elevation displays glazing bar sash windows with dentilled eaves and two gables to the rear right, with a link to a 20th-century addition. The interior has not been inspected.
Local climate
Ivy 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 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 91% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% 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.
More on this building
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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 8 transactions since 2020
- Related listed building consents — 2 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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