Steps up to Penlan, with flanking walls is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 February 2005. Steps.

Steps up to Penlan, with flanking walls

WRENN ID
lunar-garret-wax
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
Steps
Address
Steps up to Penlan, with flanking walls, Maentwrog, Gwynedd
OS grid reference
SH 664 405
Coordinates
52.94525, -3.98846
Source
Cadw listing

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

Description

This listing describes a long flight of steps that lead up the hillside on the east side of Bull Street, flanked by rubble walls topped with flat stone slab coping. The central dividing wall is made of coursed blockwork and features a shaped, raking coping with a rounded central ridge and square newels at the corners, which have stepped and pyramidal caps. The steps themselves are constructed from large blocks of stone, likely sourced from a nearby quarry at Gelli Grin.

On the left side of the steps, there is a flat-headed archway that provides access to the grounds of Penlan. This archway is built from roughly coursed masonry and includes a slate slab drip course and coping that leads to an embattled parapet. The left flight of steps leads up to the main house at Penlan, while the right flight ascends to the servant's quarters, now known as Bryn or Penlan flats. The quality of the stonework and the width of the steps indicate the different statuses of their users, with the left flight being of significantly finer construction.

Local climate

Steps up to Penlan, with flanking walls 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 2002
  • 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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Nearby listed buildings

  1. Llys Twrog Grade II 22 m
  2. Cartref Grade II 26 m
  3. Bryn or Penlan flats Grade II 26 m
  4. Penlan including attached cottage formerly known as Dwyfor. Grade II 27 m
  5. Argraig Grade II 28 m
  6. Bron-y-wern Grade II 28 m
  7. Pen-y-Bryn Grade II 29 m
  8. Lychgate to Church of St. Twrog Grade II 30 m
  9. Neuadd Llewelyn Grade II 37 m
  10. Tan-lan Grade II 40 m