20 and 21, Southside Street is a Grade II listed building in the Plymouth local planning authority area, England. First listed on 1 May 1975. Town house. 2 related planning applications.

20 and 21, Southside Street

WRENN ID
tall-turret-storm
Grade
II
Local Planning Authority
Plymouth
Constituency
Plymouth Sutton and Devonport MP: Luke Pollard (Lab)
Country
England
Date first listed
1 May 1975
Type
Town house
Address
20 and 21, Southside Street, City of Plymouth, PL1 2LD
OS grid reference
SX 481 541
Coordinates
50.36763, -4.13628
Source
Historic England listing

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

Description

A pair of late 18th-century town houses with later shops, situated on the north side of Southside Street in Plymouth's Barbican area. The houses are constructed of Plymouth limestone rubble with dressed stone voussoirs framing the ground and first-floor openings, likely originally stuccoed. They feature a dry slate mansard roof with deep projecting eaves supported by a moulded cornice, and two wide mansard dormers with late 19th-century paired sash windows. A rendered chimney stack sits on the right-hand side. The building follows a double-depth plan and extends over three storeys plus an attic, with a two-window range and rubble end pilasters. Late 19th-century paired sash windows are found on the upper floors; those on the first floor are set within openings designed for keyed segmental arches. The ground floor has a wide central doorway, now blocked on the right, a 20th-century shop window within an original wide opening on the left, and a 20th-century shopfront in a widened opening on the right. The interior has not been inspected.

Local climate

20 and 21, Southside Street sits in a wetter-than-average part of the UK, with an average of 970 mm of rain a year. This makes it wetter than 77% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 89% of listed buildings.

It experiences an average of 9 freeze-thaw cycles a year, fewer than 92% of listed buildings. Of these, 3 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 — 12 transactions since 1998
  • 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
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  2. Barbican Gallery Grade II 13 m
  3. 15, The Parade Grade II 13 m
  4. The Maritime Public House Grade II 14 m
  5. 23 and 24, Southside Street Grade II 24 m
  6. 51, Southside Street Grade II 28 m
  7. The Ship Public House Grade II 28 m
  8. Old Custom House Grade II* 32 m
  9. 52, Southside Street Grade II 35 m
  10. 25 and 26, Southside Street Grade II 38 m