Grotto 15 Yards South of South East Water Offices is a Grade II listed building in the Tonbridge and Malling local planning authority area, England. First listed on 25 February 1987. Grotto.
Grotto 15 Yards South of South East Water Offices
- WRENN ID
- slow-steel-lake
- Grade
- II
- Local Planning Authority
- Tonbridge and Malling
- Constituency
- Chatham and Aylesford MP: Tristan Osborne (Lab)
- Country
- England
- Date first listed
- 25 February 1987
- Type
- Grotto
- Address
- Grotto 15 Yards South of South East Water Offices, ME6 5NQ
- OS grid reference
- TQ 704 616
- Coordinates
- 51.32879, 0.44495
- Source
- Historic England listing
Description
The Grotto, located 15 yards south of the South East Water Offices, is a mock ruin built around 1850. It is constructed from random stone, with some unusual brick elements. The structure features two bastions that contain interior tunnel vaults made of brick, and a central passageway that is divided in the middle by a re-used moulded and cusped arch, which has springing for additional arches on either side. At the time of the last survey, the Grotto was covered in honeysuckle.
Local climate
Grotto 15 Yards South of South East Water Offices receives an average of 740 mm of rain a year. This makes it drier than 75% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 75% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 63% of listed buildings. Of these, 14 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 EPC on record for this property
- 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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