Napier House is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 19 May 1981. Town house. 2 related planning applications.
Napier House
- WRENN ID
- calm-ledge-spindle
- Grade
- II
- Local Planning Authority
- Carmarthenshire
- Constituency
- Caerfyrddin MP: Ann Davies (PC)
- Country
- Wales
- Date first listed
- 19 May 1981
- Type
- Town house
- Address
- Napier House, 13 Spilman Street, Carmarthen, SA31 1JY
- OS grid reference
- SN 414 201
- Coordinates
- 51.85691, -4.30346
- Source
- Cadw listing
Description
Napier House is a tall town house built in the early 19th century, constructed from squared rubble and red brick, topped with a pyramidal slate roof and flanked by yellow brick stacks. The building is three storeys high and features a two-window range. The front is made of rubble stone and includes two full-height recesses with recessed walling in red brick and arched heads also in red brick.
On the first floor, there are long 12-pane sash windows with cambered brick heads and slate sills. The upper floor has 6-pane sash windows with segmentally arched heads that follow the line of the arches of the recesses. The ground floor has a large tripartite sash window to the right, consisting of 4-12-4 panes set in a reeded frame. To the left, there is a doorway with an arched head and reeded frame, featuring a 9-panel door made of moulded and flush panels, along with a radiating-bar fanlight above. The entrance is sheltered by a 20th-century arched glass and timber porch with an open front. The house has a painted stone plinth.
Inside, there is an early 19th-century staircase with an open scrolled string and straight balusters. The entrance hall features a doorway with a reeded architrave and 9-panelled doors, with similar doorways leading to the first floor landing. The fireplaces throughout the house also have reeded architraves and plain mantle shelves.
Local climate
Napier House sits in one of the wettest parts of the UK, with an average of 1,270 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 64% of listed buildings. Of these, 14 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 — 2 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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