18, Belmont Street is a Grade II listed building in the Portsmouth local planning authority area, England. House.

18, Belmont Street

WRENN ID
lesser-floor-smoke
Grade
II
Local Planning Authority
Portsmouth
Constituency
Portsmouth South MP: Stephen Morgan (Lab)
Country
England
Type
House
Address
18, Belmont Street, City of Portsmouth
OS grid reference
SZ 642 994
Coordinates
50.79105, -1.08914
Source
Historic England listing

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

Description

No. 18 Belmont Street is a house, the last remaining of a former terrace, dating from around 1800. It is constructed of red brick with grey headers in Flemish bond, with the ground floor painted. The house features a plain tile hipped roof and a central brick chimney stack. It has three storeys and one bay.

On the right side, there is a recessed six-panelled door with a fanlight that has leaded radial looped glazing. The doorcase is adorned with thinly fluted Doric columns, a broken entablature, and a dentilled pediment. An original cast-iron boot-scraper is also present. To the left, there is a canted tripartite bay window, which includes a central twelve-pane sash and flanking eight-pane sashes, topped with a frieze and dentil cornice. The frieze features a shell and scrolled leaf motif at the center.

To the left of the bay window is a 20th-century single-storey flat roof extension with sixty-pane three-light casements. The first floor has a tripartite sash window with a central four-pane sash and narrow flanking four-pane sashes, all set under a slightly cambered gauged brick arch. Delicate reeded pilasters divide the lights and support moulded brackets. A brick dentil band and a stone-coped parapet complete the design.

The interior has not been inspected.

Local climate

18, Belmont Street receives an average of 810 mm of rain a year. This makes it drier than 52% 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 19 freeze-thaw cycles a year, fewer than 79% of listed buildings. Of these, 8 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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  • No EPC on record for this property
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  • 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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