Westport House is a Grade II listed building in the Wiltshire local planning authority area, England. First listed on 1 July 1976. House. 2 related planning applications.

Westport House

WRENN ID
frozen-steeple-russet
Grade
II
Local Planning Authority
Wiltshire
Constituency
South Cotswolds MP: Dr Roz Savage (LD)
Country
England
Date first listed
1 July 1976
Type
House
Address
Westport House, 116, Gloucester Road, Malmesbury, SN16 0AL
OS grid reference
ST 930 875
Coordinates
51.5871, -2.10156
Source
Historic England listing

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

Description

Westport House is a house dating largely from the late 16th century, with alterations and extensions added in the mid-18th century and a library built in the mid-19th century. The exterior is rendered over limestone rubble, with overlapping boarding to the library, brick gable and axial stacks, and a stone slate roof. The plan is of a single-depth form, now with a rear extension. The house has two storeys and an attic and features a 2:3:2-window arrangement. A central three-window 16th-century house has a door on the right-hand side, with 18th-century extensions on either end. The left-hand extension has a doorway and 6/6-pane sashes in exposed boxes. French windows are present in a single-storey early 20th-century addition (a former studio) attached to the right-hand end. Internally, details include steep collared trusses from an earlier roof, extended in the 18th century; a good 16th-century unglazed oak window with diamond mullions, now an internal opening; a well-preserved early 18th-century panelled ground-floor room with egg and dart moulding; a winder stair leading to the attic; and an 18th-century rear stair flight. The former studio has a segmental-vaulted timber ceiling and panelled walls.

Local climate

Westport House receives an average of 800 mm of rain a year. This makes it drier than 53% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 52% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 56% of listed buildings. Of these, 16 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 — 1 transaction since 2015
  • 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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  1. Walls, Railings and Overthrow to Front of Number 116 (Westport House) Grade II 12 m
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  4. 112, Gloucester Road Grade II 41 m
  5. 93, Gloucester Road Grade II 43 m
  6. 45 and 47, Foundry Road Grade II 47 m
  7. 50 and 52, Foundary Road Grade II 48 m
  8. 110, Gloucester Road Grade II 52 m
  9. 89, Gloucester Road Grade II 52 m
  10. 41 and 43, Foundry Road Grade II 52 m