Old Frognal Court is a Grade II listed building in the Camden local planning authority area, England. First listed on 14 May 1974. House. 7 related planning applications.
Old Frognal Court
- WRENN ID
- lesser-quoin-curlew
- Grade
- II
- Local Planning Authority
- Camden
- Constituency
- Hampstead and Highgate MP: Tulip Siddiq (Lab)
- Country
- England
- Date first listed
- 14 May 1974
- Type
- House
- Address
- Old Frognal Court, 23, Frognal Lane, NW3 7DB
- OS grid reference
- TQ 260 855
- Coordinates
- 51.55467, -0.18332
- Source
- Historic England listing
Description
Old Frognal Court is a detached house built around 1785 by T Pool for Sir TS Wilson Bt, with later 19th-century and 20th-century extensions. The house is constructed of yellow stock brick and has three storeys and a semi-basement. Originally, it featured three windows, with further three-window extensions added to the west side. The original central entrance has been replaced with an early 20th-century round-arched stone portico located at the junction of a later extension. The right-hand bay includes a mid-19th-century canted bay window that rises through the basement and ground floor. The windows are wooden architraved sashes, fitted with blind boxes and some shutters. The house features a wooden modillion cornice and a brick blocking course. A plaque is located above the garden doorway on the rear of the property, inscribed "Erected by Sir T.S. Wilson Bt. 1785." The interior of the building has not been inspected.
Local climate
Old Frognal Court 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.
More on this building
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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 11 transactions since 1995
- Related listed building consents — 7 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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