Sion Baptist Chapel is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 March 2000. Chapel.
Sion Baptist Chapel
- WRENN ID
- noble-buttress-clover
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 21 March 2000
- Type
- Chapel
- Address
- Sion Baptist Chapel, Sennybridge, Maescar, Powys
- OS grid reference
- SN 919 285
- Coordinates
- 51.9446, -3.57331
- Source
- Cadw listing
Description
Sion Baptist Chapel is a chapel built in 1859, constructed from rock-faced squared rubble stone and featuring a slate eaves roof. It has a square plan, with the overall roof also covering a rear vestry and flat eaves. The lateral facade includes two pointed outer doors and two pointed central windows, with a plaque between them stating 'Sion Baptist Chapel Built 1859'. The windows are adorned with tooled sandstone voussoirs, stone sills, and wooden Y-tracery with small-paned sashes. The doors are plain boarded and have Y-tracery in pointed overlights. Rendered gabled porches with pointed arched entries and plain bargeboards were likely added later. The west end is rendered, while the east end remains in rubble stone with an off-centre pointed window featuring later 19th-century glazing. The rear of the chapel is overgrown with ivy, and there is a door to the basement on the left side of the east end wall. The interior has been reconstructed as a house.
Local climate
Sion Baptist Chapel sits in one of the wettest parts of the UK, with an average of 1,410 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 55 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 31 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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- 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
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