139-145 is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 16 May 1978. Row of houses. 1 related planning application.

139-145

WRENN ID
sacred-ashlar-hazel
Grade
II
Local Planning Authority
Denbighshire
Constituency
Clwyd East MP: Becky Gittins (Lab)
Country
Wales
Date first listed
16 May 1978
Type
Row of houses
Address
139-145, Mwrog Street, Ruthin, LL15 1LE
OS grid reference
SJ 115 578
Coordinates
53.11031, -3.32353
Source
Cadw listing

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

Description

This is a long row of buildings dating from the 18th century, composed of two distinct sections but presenting a unified facade. The buildings are two storeys high throughout, with a pebble-dashed front and steeply pitched slate roofs. Brick stacks are located at the gable ends of the upper section and axially within the lower range.

The upper section originally comprised two units, probably once a single dwelling, now divided into two separate residences. Doorways are at each end; the left-hand doorway is sheltered by a fine timber porch featuring a segmentally arched entrance with snakes carved into the spandrels. This is flanked by tripartite pilasters with religious symbols in relief within recessed panels. The return walls have flat balustrading, likely renewed, above roughcast lower walls. A single light window sits above the porch, and paired lights with high transoms run along the right side on each floor. The upper doorway is beneath a small gabled porch canopy, with a 3-light transomed window to its left and a matching 2-light window above.

The lower section is a longer, two-unit range, with a single-unit cottage to the left of a passageway to the rear. This cottage has an entrance with a gabled porch canopy, and 2-light windows with high transoms on each floor to its right. A similar window is visible beyond the passageway, and another is not aligned above it. A long brick wing is located to the rear of number 139, which appears to be a separate property. The interior has not been inspected.

Local climate

139-145 sits in a wetter-than-average part of the UK, with an average of 960 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 60% of listed buildings.

It experiences an average of 38 freeze-thaw cycles a year, more than 72% 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 2015
  • Related listed building consents — 1 application
  • 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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Nearby listed buildings

  1. 137B Mwrog Street Grade II 7 m
  2. Nannau Grade II 13 m
  3. 147 Mwrog Street Grade II 17 m
  4. 135 Mwrog Street Grade II 19 m
  5. 149 Mwrog Street Grade II 25 m
  6. Sundial S of Porch, Church of St Mwrog Grade II 132 m
  7. Church of St Mwrog Grade II* 139 m
  8. Monument in St Mwrog's Churchyard Grade II 156 m
  9. Lychgate W of Church of St Mwrog Grade II 157 m
  10. Churchyard boundary walls, including East Lychgate, at Church of St Mwrog Grade II 158 m