Bryn or Penlan flats is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 February 2005. Flats. 1 related planning application.
Bryn or Penlan flats
- WRENN ID
- woven-balcony-magpie
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 25 February 2005
- Type
- Flats
- Address
- Bryn or Penlan flats, Maentwrog, Gwynedd, LL41 4HN
- OS grid reference
- SH 665 404
- Coordinates
- 52.94516, -3.9881
- Source
- Cadw listing
Description
Bryn or Penlan flats is a tall, four-storey, three-window building constructed in the 18th century, built in a Georgian style reflecting the early phases of development within the surrounding estate. Originally used as servant’s quarters, it is now divided into flats. The building is constructed from mortared rubble masonry, with large stones forming the quoins and lintels. It features broad, rectangular stone stacks with dripstones and capping.
The main facade faces west. It presents a three-window range with widely spaced openings. The windows are horned sash windows with slate sills; the lower floors have 16 panes, and the top floor has smaller eight-pane lights set under the eaves. A distinctive feature is the acutely angled northwest corner at the north end of the building, and the north gable has moulded labels positioned for windows on the top three storeys, although no openings were ever created. Access to the flats is through doorways along the rear, eastern wall. The rear elevation includes a mixture of sash and casement windows, along with a tall, fixed light with 24 panes, likely providing illumination for the staircase, located at the far northern end. The top floor openings on this rear elevation also have moulded labels.
The south gable displays dripstones positioned above the roofline of an adjacent cottage range. The cottage is a two-storey, five-window range with a gabled porch housing the entrance, which is offset to the left (north) side. The cottage’s walls are grit rendered, and the slate roof has a tiled ridge. The windows along the cottage range are modern timber casements, with smaller windows at the rear.
The interior was not inspected during the survey in June/July 2003.
Local climate
Bryn or Penlan flats sits in one of the wettest parts of the UK, with an average of 1,450 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 96% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 18 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 2019
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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