Penstep is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 14 May 1998. House.

Penstep

WRENN ID
tired-ember-brook
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
14 May 1998
Type
House
Address
Penstep, Plas Brondanw Estate, Porthmadog, Llanfrothen, Gwynedd
OS grid reference
SH 616 422
Coordinates
52.95963, -4.06111
Source
Cadw listing

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

Description

Penstep is a two-storey terrace of two houses that has been converted into one. It is constructed of rubble, partly whitened where foliage once covered it, and features a continuous modern slate roof. The roof has coved eaves and plain end chimneys with cornicing and weathercoursing, along with a similar chimney located off-centre to the right. The front of the building is symmetrical with five bays, featuring entrances in the second and fourth bays. The doors are modern, multi-pane glazed with sloped, hipped metal canopies above. The ground floor has 15-pane recessed sash windows, which have been renewed, except for the far left window, which has 12 panes. The first floor has smaller 12-pane sash windows. There are five wide splayed steps, partly cobbled, leading up to the entrance on the left. The interior was not inspected during the survey.

Local climate

Penstep sits in one of the wettest parts of the UK, with an average of 1,500 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 98% of listed buildings.

It experiences an average of 32 freeze-thaw cycles a year, fewer than 58% of listed buildings. Of these, 16 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.

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  2. Statue of Fireman set within lily-pond at Plas Brondanw Gardens Grade II 34 m
  3. Steps, Gates and Gatepiers to Upper Terrace at Plas Brondanw Gardens Grade II 36 m
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  5. Gatepiers and Overthrow linking Plas Brondanw with Brondanw Cottages Grade II 54 m
  6. Gatepiers and Steps to W of Coach-house at Plas Brondanw Gardens Grade II 54 m
  7. Revettment Walls and Circular Steps to Wall Fountain at Plas Brondanw Gardens Grade II 56 m
  8. Plas Brondanw Cottages Grade II 59 m
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