Preswylfa is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 17 March 1999. House. 3 related planning applications.

Preswylfa

WRENN ID
stubborn-joist-pearl
Grade
II
Local Planning Authority
Caerphilly
Constituency
Newport West and Islwyn MP: Ruth Jones (Lab)
Country
Wales
Date first listed
17 March 1999
Type
House
Address
Preswylfa, 13 Bryngwyn Road, Newbridge, NP11 4GX
OS grid reference
ST 202 966
Coordinates
51.66309, -3.155
Source
Cadw listing

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

Description

Preswylfa is a detached house featuring painted roughcast with brick dressings and a plinth, topped by a steep pitched tiled roof with overhanging boarded eaves. The house has casement windows with leaded rectangular quarries, some of which are original while others have been replaced. It has an L-shaped plan and an asymmetrical frontage. On the left side, there is a two-storey gabled bay with a steep pitch, which includes a four-light first floor window set within a narrow segmental arched brick surround, and a flat-roofed canted bay below. On the right side, the roof slopes down over the ground floor windows, incorporating a dormer at first floor level with three similar but smaller lights, and extends over double and triple hall lights, forming a bracketed hood over the half-glazed and boarded front door.

The uphill-facing elevation features a four-light first floor window, now without quarries, and a canted flat-roofed ground floor bay. At the rear, the chimney stacks are more prominent, with one on the ridge, another on the rear wing, and a tall external brick stack below, some retaining their original pots. The windows have tiled sills and brick surrounds, and there is a staircase window with decorative coloured glass.

Inside, the front door opens onto a spacious hall, from which rooms and the staircase lead. The main living room is highlighted by an inglenook fireplace.

Local climate

Preswylfa 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

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  • No EPC on record for this property
  • Sale history — 2 transactions since 2016
  • Related listed building consents — 3 applications
  • 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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  2. Former Hall's tramroad and railway tunnel E portal Grade II 504 m
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  5. Celynen Collieries Workmen's Institute Grade II 545 m
  6. Pentwyn-isaf Grade II 575 m
  7. Former Hall's tramroad and railway tunnel W portal Grade II 707 m
  8. Beulah Baptist Church and attached wing and gateway Grade II 934 m
  9. Catholic Church of Our Lady of Peace including attached presbytery Grade II* 1.3 km
  10. Ty Mynydd Grade II 1.5 km