18 Market Square is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 26 February 1981. Flax mill.

18 Market Square

WRENN ID
kindled-garret-frost
Grade
II
Local Planning Authority
Carmarthenshire
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
26 February 1981
Type
Flax mill
Address
18 Market Square, Llandovery
OS grid reference
SN 767 343
Coordinates
51.99384, -3.79716
Source
Cadw listing

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

Description

18 Market Square is a house in an informal terrace, built in the 18th century. It has three bays and two storeys, topped with a slate gabled roof and rendered chimneys on both the left and right sides. The eaves are narrow and bracketed. The facade is unpainted rendered, which was formerly lined to resemble ashlar, featuring long and short quoins on either side. The outer bays have 12-pane hornless sash windows, while the central bay is blank. The window reveals have keystones.

There is a central recessed six-panel door, which consists of four fielded panels and two flush panels, with panelled reveals and a traceried fanlight above. A moulded course runs from the side piers of the recess under the fanlight. The door surround is plain, with applied pilasters that have entablature blocks and a plain shelf cornice, although the pilasters have been renewed at the base. The stone sills are present, and the right-hand return wall is rendered and windowless.

Inside, there is a dog-leg stair that runs parallel to the front wall, featuring stick balusters, a thin rail, and thin column newels, with scrolled tread ends. The right-hand front room has been altered and includes panelled shutters.

Local climate

18 Market Square sits in one of the wettest parts of the UK, with an average of 1,390 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 91% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 23 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 — 1 transaction since 2003
  • 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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