Bethel Independent Chapel is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 29 March 2000. Chapel. 3 related planning applications.

Bethel Independent Chapel

WRENN ID
noble-quoin-holly
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
29 March 2000
Type
Chapel
Address
Bethel Independent Chapel, Cwm-Twrch Isaf, Swansea, Ystradgynlais, SA9 2PS
OS grid reference
SN 770 099
Coordinates
51.77451, -3.78375
Source
Cadw listing

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

Description

Bethel Independent Chapel is a building dating from the 18th century, exhibiting a free classical style. The front gable is finished in painted imitation stone, while the side walls are constructed of small, squared brown stone blocks, visible where the painted finish has worn. The roof is slate, topped with a large, Baroque-style timber cupola. This cupola is square with chamfered corners, featuring louvred arched openings, pilasters on the corners, and a deep cornice which projects forward diagonally. A stepped, leaded, bellcast spirelet rises from the cupola, with a square plan and a ball-and-cross finial.

The main facade is dominated by a central open-pedimented feature, decorated with flat Greek mutules to the pediment, and broad painted stone or stucco pilasters at the sides. Within this central feature is a doorcase flanked by a tripartite window. The window has small-paned side-lights and stained glass in the centre, with a broad, elliptical blind lunette above, breaking into a pediment. This lunette is decorated with stucco radiating bars and an arch, and contains a plaque in the gable above. The doorcase has a moulded surround, recessed panels inscribed “Bethel”, and a cornice above. It provides access to double doors with a leaded overlight. Narrow stone sections are located on either side of the central feature, each with a stucco block beneath a short return of the gable coping and pairs of stucco bands above and below a small rectangular ground floor window. The two-storey, four-window sides are rendered and feature a plinth, arched surrounds to the ground floor small-paned cross-windows, and three stucco roundels between the windows. Upper casement pairs are set within raised surrounds. A lower, gabled range to the rear has a door and two windows. A single-storey range dating from the 19th century, constructed of rubble stone, adjoins the rear, featuring three cambered-headed windows with stone voussoirs.

The interior, dating from 1925, is characterised by a three-sided gallery supported by six marbled iron columns with canted ends and a pitch-pine panelled front, with alternating long and square panels. A cornice runs below the gallery, and a moulded rail sits above it. The pews are made of pitch-pine, with three blocks featuring vertically boarded backs and shaped bench ends. The “set fawr” (pulpit area) has canted angles and a panelled back. The 1925 pulpit has steps on each side of the platform, with square newels and a large canted front exhibiting contrasting colours and grains in the woodwork, alongside a large roundel flanked by neo-classical reeded details springing from small roundels. A moulded cornice and top rail complete the pulpit. Behind the pulpit is a tall, plain, cambered-headed recess with high pitch-pine panelling. A lobby provides access and contains a three-light leaded window and two doors. The plaster ceiling is divided into four bays with painted timber arch-braced collar trusses resting on corbels, with the space above the collars ceiled and fitted with plain plaster roundel vents.

Local climate

Bethel Independent Chapel sits in one of the wettest parts of the UK, with an average of 1,490 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 95% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 81% 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2022
  • 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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