Port Mill is a Grade II listed building in the Stroud local planning authority area, England. First listed on 24 March 1988. Mill. 4 related planning applications.
Port Mill
- WRENN ID
- quartered-cloister-mist
- Grade
- II
- Local Planning Authority
- Stroud
- Constituency
- Stroud MP: Dr Simon Opher (Lab)
- Country
- England
- Date first listed
- 24 March 1988
- Type
- Mill
- Address
- Port Mill, Brimscombe Hill, Brimscombe and Thrupp, GL5 2QG
- OS grid reference
- SO 868 022
- Coordinates
- 51.71902, -2.19161
- Source
- Historic England listing
Description
Port Mill is a former mill complex dating to the 18th century, with later additions, situated on a waterway. The layout consists of three principal ranges connected by a central water tower. The main range, extending southwest, is eight bays and incorporates part of an earlier building, with further early outbuildings attached to the southwest, alongside the road. Two additional ranges are attached to the northeast and northwest of the tower, forming an informal T-plan.
The three-storey main block features an eight-window front, with keyed, segmental-arched, small-pane, fixed-light windows, each with a single small opening pane. Gabled ends have parapets. The roof is punctuated by two square, louvred ridge vents, each topped with a pyramidal roof and spike finials. A link section extends the main block to the right, featuring Tudor-arched windows on each floor. The water tower contains a full-height, round-arched recess with a small-pane, fixed-light window on each floor, and a round-arched window at attic level, with further round-arched recesses at the base of the tank. A mid-19th century range projecting forward to the northeast has a hipped roof and segmental-arched windows of a slightly different design. This range is linked to the main block by the weather-boarded rear of a northwest range, whose openings generally match the main range, although some variation exists at the northeast end. The southwest end of the main range is of earlier date and includes upper-floor level loading doors with a circular window above. An outbuilding range extends to the left, incorporating a small brick-lined niche with a stone water trough and a chapel-like ashlar front, featuring a round-arched doorway flanked by narrow, round-arched windows on two levels, with a circular window above. A detached single-storey, rendered outbuilding to the north has been extended and stands on the waterway edge, with a round-arched window at the southeast end. Various 20th century industrial buildings attached to the northwest range are not of special interest. The interiors were not inspected and do not retain any milling equipment.
Local climate
Port Mill 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.
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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