Clare Lallow's Grid Iron Yard is a Grade II listed building in the Isle of Wight local planning authority area, England. First listed on 12 February 1987. Former seaplane factory.
Clare Lallow's Grid Iron Yard
- WRENN ID
- sacred-stone-foxglove
- Grade
- II
- Local Planning Authority
- Isle of Wight
- Constituency
- Isle of Wight West MP: Richard Quigley (Lab)
- Country
- England
- Date first listed
- 12 February 1987
- Type
- Former seaplane factory
- Address
- Clare Lallow's Grid Iron Yard, Castle Street, East Cowes
- OS grid reference
- SZ 501 956
- Coordinates
- 50.75791, -1.29017
- Source
- Historic England listing
Description
Clare Lallow's Grid Iron Yard is a former seaplane factory, now a boatyard, built around 1912 to 1913. The building is constructed of red brick in English bond, with some corners in part header bond. It features wide wooden eaves and a hipped roof that is currently covered in corrugated iron sheeting.
On the south side, there are two cambered door surrounds with rectangular fanlights, plank doors, and a large three-light casement window. The west side has three cambered arches and cambered doorcases. The east side is notable for six large three-light casements with wooden frames and concrete lintels, one of which is blocked. The north side, facing the River Medina, has four large wooden plank doors and an iron slipway.
Inside, the building boasts a scientific kingpost roof with through purlins. It was originally built for the firm J S White & Co for the construction of seaplanes, with the first seaplane launched in May 1913. Production later moved to west Cowes. This site is included as a very early seaplane factory and is referenced in the Guide to Industrial Archaeology of Hampshire and the Isle of Wight by Dr Edwin Course of Southampton University.
Local climate
Clare Lallow's Grid Iron Yard receives an average of 800 mm of rain a year. This makes it drier than 54% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.
It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 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
- 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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Nearby listed buildings
- East Cowes Congregational Church
- The Bell Inn
- Former Sailmaker's Loft to North West of Bell Inn
- Hammerhead Crane at J S White Shipyard
- Wall and Gate Piers to Church of St James
- East Cowes War Memorial
- East Cowes Air Raid Protection (Civil Defence) Memorial
- Church of St James
- Wall to Frank James Memorial Hospital
- Medina View (Former Boathouse)