Blackbirds Farm House is a Grade II listed building in the Hertsmere local planning authority area, England. First listed on 12 August 1985. Farmhouse. 4 related planning applications.
Blackbirds Farm House
- WRENN ID
- white-garret-saffron
- Grade
- II
- Local Planning Authority
- Hertsmere
- Constituency
- Hertsmere MP: Sir Oliver Dowden (Con)
- Country
- England
- Date first listed
- 12 August 1985
- Type
- Farmhouse
- Address
- Blackbirds Farm House, Blackbird Lane, Aldenham, WD25 8BS
- OS grid reference
- TQ 145 997
- Coordinates
- 51.6845, -0.34463
- Source
- Historic England listing
Description
Blackbirds Farm House is a Grade II listed building that was originally a barn, likely built in the late 16th century and converted into a house in the 17th century. It was extended in the 19th century and altered in the 20th century. The structure features a timber frame on a brick base and is weatherboarded, topped with a steeply pitched machine-tiled roof. The building has been converted from four or five bays into a two-storey lobby entry, with the entrance located to the left of the centre. It includes two and three-light casement windows and a large axial ridge stack with a rebuilt cap. At the rear, there is a catslide roof over a 19th-century brick addition on the left, along with further ground floor additions. Inside, there is an English bond double fireplace, straight and curved braces connecting jowled posts to tie beams, and an ogee stop-chamfered binding beam. The house adjoins No. 5 Blackbird Lane, which was built in the 18th century to enlarge this property.
Local climate
Blackbirds Farm House sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 87% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- Related listed building consents — 4 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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