James Isaac is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 25 September 1986. Commercial. 3 related planning applications.
James Isaac
- WRENN ID
- graven-gallery-bramble
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 25 September 1986
- Type
- Commercial
- Address
- James Isaac, 17 High Street, Crickhowell, Powys, NP8 1BD
- OS grid reference
- SO 217 184
- Coordinates
- 51.85896, -3.13743
- Source
- Cadw listing
Description
James Isaac is a late Georgian building featuring a group of paired three-storey and basement frontages that are rendered and stuccoed. The surfaces are cement, scribed, and roughcast, with deep cill bands. The roofs are slate, and there are brick and cement render chimney stacks, with No 17 retaining a parapet.
The windows include recessed six- and twelve-pane sash windows at No 16, and twelve-pane windows on the first floor of No 17. The shop fronts at Nos 16 and 17 are well-preserved, featuring blind boxes, moulded cornices, an ironwork ventilation band, and fluted and foliated mullions on the shop windows of No 17. Both pairs of buildings have advanced ground floor openings that are divided, complete with cornices and keystones above semicircular headed arches leading to narrow cross passages.
Local climate
James Isaac sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 71% of listed buildings.
It experiences an average of 50 freeze-thaw cycles a year, more than 92% of listed buildings. Of these, 27 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.
- No sale records on file
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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