Penrhiwlas is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 29 January 1999. Residential building.

Penrhiwlas

WRENN ID
waning-loggia-rowan
Grade
II
Local Planning Authority
Caerphilly
Constituency
Newport West and Islwyn MP: Ruth Jones (Lab)
Country
Wales
Date first listed
29 January 1999
Type
Residential building
Address
Penrhiwlas, Croespenmaen, Crumlin
OS grid reference
ST 198 984
Coordinates
51.67949, -3.16096
Source
Cadw listing

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

Description

Penrhiwlas is a long rectangular building dating from the 19th century, featuring a single storey and attic, with a two-storeyed gabled south wing. The roof is covered with stone tiles and terracotta ridge tiles, and there is a replaced brick ridge stack along with two gabled dormers at the rear. The exterior is made of whitewashed stone rubble.

The front elevation showcases a small two-light upper window with a hood and shallow sill above the steep-pitched gabled south wing, with a later bay window below. To the left is a window, while to the right is an altered window and an extension. The gable end facing the road has an attic window with a hood and sill. The rear elevation features a low porch outshut with a single-pitched stone tile roof, leading to a rubble wall that encloses a shallow courtyard. There is a doorway in the center left, a casement window with a hood to the right, a small cambered-headed window to the left, and an enlarged window at the end. To the right, there are two blocked doorways with shallow timber lintels, and a further low rubble wall extends to the garden.

Inside, the building retains deeply chamfered and stopped close-set beams without joists, and there is a boarded ceiling in the main ground floor rooms. A blocked former open fireplace is present, with curved wooden stairs beside it that bifurcate to provide access to the loft at the end unit. The A-frame roof is intact. Originally, a screen separated the main room from the cross passage; on the opposite side, there was a former dairy and outbuilding, which has now been converted into separate living accommodation.

Local climate

Penrhiwlas sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 79% of listed buildings.

It experiences an average of 44 freeze-thaw cycles a year, more than 85% of listed buildings. Of these, 21 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

Sign in or create a free account to unlock:

  • 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
Create free account

Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.

Similar buildings

The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.

Nearby listed buildings

  1. Former Barn at Croespenmaen Grade II 280 m
  2. Pentref-y-Groes Grade II 507 m
  3. Barn and byre range at Pen-y-groes 3 Grade II 511 m
  4. Cyncoed Farm Cottage Grade II 1.1 km
  5. Crumlin Viaduct SW Abutment Cwm Kendon Grade II 1.2 km
  6. The Oakdale Public House Grade II 1.2 km
  7. Viaduct Cottage Grade II 1.3 km
  8. Former Navigation Colliery Electrical Outbuilding Grade II 1.3 km
  9. Former Navigation Colliery Workshops and Stores Grade II 1.3 km
  10. Former Navigation Colliery Chimney Grade II* 1.3 km