Theatre Royal is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 22 August 1975. House.

Theatre Royal

WRENN ID
tangled-lantern-harvest
Grade
II
Local Planning Authority
Merthyr Tydfil
Constituency
Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
Country
Wales
Date first listed
22 August 1975
Type
House
Address
Theatre Royal, Town, CF47 0LJ
OS grid reference
SO 051 067
Coordinates
51.75105, -3.3754
Source
Cadw listing

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

Description

The Theatre Royal is a two-storey building with an attic, featuring a five-bay classical front that has modified parapets over the center, where the pediment has been removed, and lean-to flanking parapets. The center three bays have a cornice above small vents, with a panel reading "THEATRE ROYAL" below. The first-floor has sash windows, with the outer windows being round-headed and the inner ones supported by lion-mask brackets to their cornices. Above is a central oculus set over a broken segmental pediment, which has an urn finial and scrolled brackets. The ground floor features arched openings linked by impost and hood-mouldings, with recessed doors accessed by steps. To the left, there is a modern canopied entrance that has replaced the original arched openings. The bulky rear elevation includes a corrugated-iron fly-tower above a wide slate roof.

Attached to the right, downhill, is Thespian House, a two-storey rendered block that is set back and has a splayed bay further to the right. It has a continuous plain parapet, which was formerly crenellated, and architraves with keyblocks above boarded windows. A string-course over the ground floor connects it to the theatre. The ground floor also has arched openings linked with a segmental carriage arch on the left, leading to double boarded doors.

The auditorium was completely rebuilt in the later 1920s, with a large balcony added. It features a splendid sunburst ceiling rose, likely from the 1890s, above the stalls, along with Art Deco borders and rosettes. The proscenium is also in the Art Deco style, with a ramped and stepped surround, and the Royal Arms at the center, flanked by splayed crestings. The side walls have linked low-relief panels with stepped detailing, and acanthus and anthemion cornices above. Organ pipes are located in niches flanking the stage, and there is recessed coffering over the gallery with a convex, cantilevered front, adorned with Art Deco embellishments. The lighting features polygonal, pendant fittings.

Local climate

Theatre Royal 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 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.

It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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 2022
  • 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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