The Old Manor House is a Grade II listed building in the Horsham local planning authority area, England. House. 10 related planning applications.

The Old Manor House

WRENN ID
crooked-timber-scarlet
Grade
II
Local Planning Authority
Horsham
Constituency
Horsham MP: John Milne (LD)
Country
England
Type
House
Address
The Old Manor House, Knob Hill, Warnham, RH12 3SN
OS grid reference
TQ 158 341
Coordinates
51.09457, -0.34727
Source
Historic England listing

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

Description

The Old Manor House is a 15th-century timber-framed house with plaster infilling. The first floor is partly close-studded, while the ground floor was rebuilt using sandstone. It has a roof of Horsham slabs. Casement windows are present. The south front has three windows, with evidence of two blocked original windows containing wooden mullions. The east front features a recessed centre with curved braces supporting the eaves, and some timbers have been renewed. Four windows are visible on this front. Later additions were made to the west and north of the original structure.

Local climate

The Old Manor House receives an average of 740 mm of rain a year. This makes it drier than 73% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 53% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 62% 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 — 3 transactions since 2015
  • Related listed building consents — 10 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. Barn to North East of the Old Manor House Grade II 19 m
  2. The Former Village School Grade II 238 m
  3. 18, 20 and 22, School Hill Grade II 284 m
  4. 12, 14 and 16, School Hill Grade II 313 m
  5. 8 and 10, School Hill Grade II 324 m
  6. 4 and 6, School Hill Grade II 337 m
  7. 2, School Hill Grade II 347 m
  8. The Sussex Oak Inn Grade II 357 m
  9. Cider Mill Farm Cottages Grade II 367 m
  10. The Old Forge Grade II 372 m