Ormonde House is a Grade II listed building in the Bath and North East Somerset local planning authority area, England. First listed on 5 August 1975. Detached house. 9 related planning applications.

Ormonde House

WRENN ID
blind-obsidian-laurel
Grade
II
Local Planning Authority
Bath and North East Somerset
Constituency
Bath MP: Wera Hobhouse (LD)
Country
England
Date first listed
5 August 1975
Type
Detached house
Address
Ormonde House, Sion Hill, BA1 2UN
OS grid reference
ST 739 659
Coordinates
51.39158, -2.3753
Source
Historic England listing

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

Description

Ormonde House is a detached house, dating from circa 1790, situated on Sion Hill, and now converted into apartments. It was altered in the mid-19th century and extended in the late 20th century to create the apartments. The house is built of limestone ashlar, painted up to the attic storey, with a rubble stone return wall. It has a double-pitched slate roof and moulded stacks to the returns.

The main façade is symmetrical with a seven-window range, featuring three windows within each canted bay. A coped parapet and cornice adorn the attic storey, which has six-pane sash windows. The first-floor cornice forms a sill string course to the attic and follows the parapets of the 19th-century two-storey canted bays. These bays feature first-floor French windows with three panes, and two-pane overlights, opening onto a balcony with cast iron balustrades supported by cast iron columns on an ashlar plinth. This balcony extends over an enclosed porch, which has clasping Tuscan pilasters supporting an entablature over a semicircular arch, a plain fanlight, and double bolection moulded six-panel doors with narrow side lights. The ground floor windows in the bays are similar to those on the first floor, but with plain overlights. The right return wall has six-pane sash windows in the centre, with 20th-century windows to the left. Modern windows and doors are present at the rear, along with a three-storey 20th-century wing to the left. The interior has not been inspected.

Local climate

Ormonde House receives an average of 860 mm of rain a year. This makes it wetter than 60% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 64% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 15 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 — 9 transactions since 1996
  • Related listed building consents — 9 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. Trafalgar House and Ormond Lodge Grade II 40 m
  2. Gothic Cottage Grade II 52 m
  3. 31, Sion Hill Grade II 54 m
  4. 32, Sion Hill Grade II 61 m
  5. 33, Sion Hill Grade II 74 m
  6. Duncan Cottage Grade II 85 m
  7. Sion Lodge Grade II 95 m
  8. Sion Cottage and attached stable, dovecote and walls Grade II 116 m
  9. 36 and 37, Sion Hill Grade II 119 m
  10. 38, Sion Hill Grade II 142 m