Porthole Cottage and Former Machine Shop is a Grade II listed building in the Stroud local planning authority area, England. First listed on 17 July 1980. Residential, former machine shop. 2 related planning applications.

Porthole Cottage and Former Machine Shop

WRENN ID
sleeping-spire-hemlock
Grade
II
Local Planning Authority
Stroud
Constituency
Stroud MP: Dr Simon Opher (Lab)
Country
England
Date first listed
17 July 1980
Type
Residential, former machine shop
Address
Porthole Cottage and Former Machine Shop, Brewery Lane, Nailsworth, GL6 0JQ
OS grid reference
ST 848 993
Coordinates
51.69269, -2.22028
Source
Historic England listing

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

Description

This building comprises Porthole Cottage and a former machine shop, dated 1836. The cottage is a small, two-and-a-half-storey structure built of rubble, with a stone tile roof and a brick chimney topped with dentil detailing. It features a range of circular windows, and an added window with a blocked door below it to the left. The building has red and blue brick quoins and dressings. A window on the right-hand return displays the inscription "J M 1836" on its lintel. A 20th-century gabled entrance wing has been added to the right.

The cottage is linked to a later 19th-century outhouse connected to a small former machine shop. The machine shop has gable end porthole windows and a blocked segmental opening to the right, above which is a window. The central door has a cambered inner arch.

Local climate

Porthole Cottage and Former Machine Shop 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 greater than that of 50% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 69% of listed buildings. Of these, 17 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 — 26 transactions since 1995
  • 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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