Trinity House Including Adjacent Petrol Pump is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 14 January 1971. Lodge.
Trinity House Including Adjacent Petrol Pump
- WRENN ID
- gilded-lead-finch
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 14 January 1971
- Type
- Lodge
- Address
- Trinity House Including Adjacent Petrol Pump, Portmeirion, Penrhyndeudraeth
- OS grid reference
- SH 589 371
- Coordinates
- 52.91344, -4.09956
- Source
- Cadw listing
Description
Trinity House, which includes an adjacent petrol pump, is a three-storey commercial building with an eclectic Georgian style, dating from the 18th century. The building features rendered elevations, a rubble ground floor, and a hipped slate roof with oversailing eaves, along with a plain rendered chimney.
The front elevation, facing southwest, has a main three-bay section with an additional bay on the right that jetties out slightly at the first floor level and has a slightly angled corner. The ground floor includes a shop front with a central entrance featuring triple multi-pane doors that are deeply recessed between two canted multi-pane bays. A projecting canopy extends along the entire length of this section above the entrance and bays. On the upper storeys, there are 12-pane sash windows in the outer bays and a 6-pane vertical window in the centre, with the second-floor window having external wooden shutters. The advanced right-hand section has a tunnel entrance on the left leading to the rear and a part-glazed door on the right. The first floor has a two-part 8-pane casement window, and there is a small square light on the second floor diagonally above.
The rear elevation, which faces the pond, features a symmetrical main section with three arched niches on the ground floor and two shallow canted oriels on the upper floors. The niches are adorned with segmental fans and baroque busts within the outer ones. The canted oriels have 12-pane central sashes and 8-pane flanking sashes, with small rectangular lights on the far left and right on both floors. There are also 12-pane sashes on the left return of both upper floors. Set back to the left is an adjoining section that has a metal-railed stair leading up in a straight flight to the first floor, where there is a glazed door within a recessed porch and a 6-pane upper window.
In front of Trinity House stands a National Benzole petrol pump from 1926, which is embellished with a polychromed early 19th-century pine figurehead.
Local climate
Trinity House Including Adjacent Petrol Pump sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- 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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