Ha Ha Around Mansion at Pishiobury Park is a Grade II listed building in the East Hertfordshire local planning authority area, England. First listed on 2 October 1981. Ha-ha wall.

Ha Ha Around Mansion at Pishiobury Park

WRENN ID
former-threshold-sparrow
Grade
II
Local Planning Authority
East Hertfordshire
Constituency
Hertford and Stortford MP: Josh Dean (Lab)
Country
England
Date first listed
2 October 1981
Type
Ha-ha wall
Address
Ha Ha Around Mansion at Pishiobury Park, Pishiobury Drive, Sawbridgeworth
OS grid reference
TL 480 134
Coordinates
51.80006, 0.14545
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The ha-ha around the mansion at Pishiobury Park is a Grade II listed structure, likely designed in the late 18th century, around 1782-1783, by Lancelot (Capability) Brown. It consists of a high-quality red brick wall with regular coursing, built below ground level as a vertical revetment on the inner side of a ditch. This design prevents cattle from entering the garden while remaining unobtrusive in views from the house. The wall features 12 courses of brickwork topped with coping bricks that are flush with the lawn. The best-preserved section is located to the northwest of the mansion, following an irregular serpentine line from the drive to the lake. This structure is a characteristic feature of landscape gardens.

Local climate

Ha Ha Around Mansion at Pishiobury Park 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 89% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 50% of listed buildings. Of these, 17 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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  1. Pishiobury Park Mansion and Attached Offices and Garden Walls and Norman Gateway Grade II* 58 m
  2. Stable Block on South of Upper Courtyard at Pishiobury Park Grade II* 65 m
  3. Dairy at East End of Upper Courtyard, Pishiobury Park Grade II 73 m
  4. Garden Cottage, Wall to Kitchen Garden and West Screen Wall to Lower Courtyard, Pishiobury Park Grade II 86 m
  5. Barn at East End of Lower Courtyard, Pishiobury Park Grade II 88 m
  6. Summer House and Pump on South East Corner of Walled Garden, Pishiobury Park Grade II 143 m
  7. The Lodge Grade II 700 m
  8. Gate Piers Next to Number 1 Grade II 707 m
  9. The Straw Hat Restaurant (Near Junction with Chaseways) Grade II 760 m
  10. Falconers Grade II* 923 m