The Mansion House is a Grade II listed building in the St. Helens local planning authority area, England. First listed on 23 August 1985. House. 4 related planning applications.

The Mansion House

WRENN ID
crumbling-storey-birch
Grade
II
Local Planning Authority
St. Helens
Constituency
St Helens North MP: David Baines (Lab)
Country
England
Date first listed
23 August 1985
Type
House
Address
The Mansion House, City Road, WA10 2UE
OS grid reference
SJ 507 964
Coordinates
53.46283, -2.74373
Source
Historic England listing

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

Description

The Mansion House is a house, now serving as local government offices, built around the 1840s. It features a stucco exterior with hipped slate roofs and is designed in the Italianate style. The building has two storeys and three bays, with the first bay projecting forward and the third bay recessed. The ground floor showcases channelled rustication, a frieze, and a cornice, while the first floor has a sill course, a top frieze, and bracketed eaves. The first-floor windows are adorned with eared architraves, pulvinated friezes, and cornices, with the central window featuring a pediment; all windows are casements.

The porch is notable for its attached distyle-in-antis Ionic colonnade, which frames a central round-arched opening with balustrading and a pierced parapet. The entrance is located in the return. The central bay is topped with a tower that includes a round-headed blind window and three round-headed openings beneath bracketed eaves and a pyramidal roof. The building has four stucco stacks with moulded decoration. The right return and rear facades are similar in style, with the return featuring a central attic storey above a ground floor canted bay window with a pierced balustrade and a first-floor tripartite window with colonnettes. The rear has a two-bay window and a low end bay with a blind tripartite window, which has a triple key and a shell motif in a round recess above.

Local climate

The Mansion House sits in a wetter-than-average part of the UK, with an average of 1,050 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% 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.
  • No sale records on file
  • Related listed building consents — 4 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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