Number 21 and Attached Bollards and Chains is a Grade II listed building in the Camden local planning authority area, England. First listed on 14 May 1974. House. 1 related planning application.
Number 21 and Attached Bollards and Chains
- WRENN ID
- proud-sill-wind
- 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
- Number 21 and Attached Bollards and Chains, Holly Mount, NW3 6SG
- OS grid reference
- TQ 263 858
- Coordinates
- 51.5578, -0.17916
- Source
- Historic England listing
Description
Number 21 is a detached house dating from the early 19th century, constructed of yellow stock brick and rising to four storeys. The front features a single window with a single-storey extension to the right. The plain doorway has a 20th-century bracketed canopy and a panelled door. A continuous canted bay extends through three storeys, finished in painted brick and pebbledash, with sash windows that have exposed boxing. The fourth floor includes a flush framed sash window, also with exposed boxing. A moulded brick eaves cornice runs around the building's returns. The property has attached cast-iron bollards with chains as subsidiary features. The interior has not been inspected.
Local climate
Number 21 and Attached Bollards and Chains 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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- No EPC on record for this property
- No sale records on file
- Related listed building consents — 1 application
- 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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