Portland House, Forecourt Railings and Gates is a Grade II listed building in the Somerset local planning authority area, England. First listed on 9 February 1961. House. 1 related planning application.

Portland House, Forecourt Railings and Gates

WRENN ID
scattered-keep-oak
Grade
II
Local Planning Authority
Somerset
Constituency
Wells and Mendip Hills MP: Tessa Munt (LD)
Country
England
Date first listed
9 February 1961
Type
House
Address
Portland House, Forecourt Railings and Gates, the Causeway, Mark, TA9 4QF
OS grid reference
ST 368 477
Coordinates
51.22521, -2.90566
Source
Historic England listing

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

Description

Portland House is an early 19th-century house with alterations made in the 20th century. It is constructed with a rendered exterior that resembles ashlar, and has a low-pitched slate roof with wide eaves and two brick stacks. The building is symmetrical in design, with a 1:1:1 bay arrangement, and the central section projects slightly. The windows are mostly 16-pane sash windows, with a 12-pane sash window located centrally on the first floor, each with stepped voussoirs.

The ground floor features a broad, semi-circular headed opening that forms a porch, accentuated by a prominent keystone. This opening has a 20th-century glazed infill and a half-glazed inner door, which leads to a coved plaster ceiling inside.

The forecourt is enclosed by cast and wrought iron railings, with a central gate that matches the style of the railings.

Local climate

Portland House, Forecourt Railings and Gates receives an average of 820 mm of rain a year. This makes it wetter than 50% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 66% of listed buildings.

It experiences an average of 24 freeze-thaw cycles a year, fewer than 74% 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 2 transactions since 1996
  • Related listed building consents — 1 application
  • 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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