The Old Blue School is a Grade II listed building in the Hounslow local planning authority area, England. First listed on 21 May 1973. School. 2 related planning applications.

The Old Blue School

WRENN ID
dark-rubble-onyx
Grade
II
Local Planning Authority
Hounslow
Constituency
Brentford and Isleworth MP: Ruth Cadbury (Lab)
Country
England
Date first listed
21 May 1973
Type
School
Address
The Old Blue School, Lower Square, TW7 6RL
OS grid reference
TQ 165 758
Coordinates
51.46921, -0.32312
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Old Blue School is an early 19th-century building located in Lower Square, Isleworth. It is two storeys tall and constructed of gault brick. On the first floor, there are six stone mullioned windows, each featuring pointed lights under square heads. The ground floor has five windows, four of which have centred heads, also with stone mullions and pointed lights. The centre of the ground floor projects slightly. There are two stone cornice bands between the storeys, and the building is topped with a cornice and a battlemented parapet. An irregular octagonal brick tower rises from the roof, which includes a clock dial in the lower section and a pointed belfry window in the upper section. The tower is capped with an original Portland stone dome and a wrought iron weather vane inscribed with "IPS."

Local climate

The Old Blue School sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 92% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 90% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 64% 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 — 8 transactions since 2014
  • Related listed building consents — 2 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
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Nearby listed buildings

  1. 11, Lower Square Grade II 32 m
  2. The Duke of Northumberland Grade II 52 m
  3. 2, Church Street Grade II 54 m
  4. 6 and 8 Church Street Grade II 70 m
  5. 8, Upper Square Grade II 90 m
  6. Nazareth House Gatehouse Grade II 141 m
  7. 6, South Street Grade II 141 m
  8. Front Entrance Gate and Gateposts to Nazareth House Grade II 150 m
  9. Mill Bridge and Basin Grade II 164 m
  10. Isleworth Public Hall Grade II 182 m