Rockside and Including Boscarne is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 30 May 1967. House. 7 related planning applications.

Rockside and Including Boscarne

WRENN ID
far-mortar-sienna
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
30 May 1967
Type
House
Address
Rockside and Including Boscarne, 32 and 32a, Trefusis Road, Mylor, TR11 5TZ
OS grid reference
SW 809 336
Coordinates
50.16255, -5.069
Source
Historic England listing

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

Description

Rockside, now divided into two houses, was originally a 17th-century house that was rebuilt or remodeled in the 18th century and extended in the early 19th century. The building features rubble walls with a stuccoed ground floor and slate-hung upper floors. It has a steep scantle slate roof with a large external breast at the right-hand gable end. The layout includes two front reception rooms on either side of a central passage that leads to a stair turret, with an additional bay added to the left (north) in the early 19th century to create a separate house with a further wing at the rear.

The structure stands three storeys tall, with a west-facing road front that has a symmetrical three-window arrangement for the original 18th-century house on the right and a one-window front for the early 19th-century extension on the left. The central doorway of the original house features an original door with a fanlight above, consisting of six fielded panels and three fielded panels on each side. This is framed by an elegant round-headed wooden doorcase with engaged fluted columns and a double entablature above. The early 19th-century windows are hornless sashes, with 16 panes in the tall ground and first-floor windows, and 12 panes with a high meeting rail in the square second-floor sashes. The ground floor also has early 19th-century internal window shutters.

No 32a, located on the left, has similar but later horned sashes and a doorway positioned near the front on the left-hand gable end (north) wall. The interior of Rockside has not been fully inspected, but the entrance hall features high fielded dado panelling, and the stairwell contains an early 18th-century staircase with heavy turned balusters. It is noted to be one of the oldest houses in Flushing and was once the last house in the southern direction.

Local climate

Rockside and Including Boscarne receives an average of 850 mm of rain a year. This makes it wetter than 59% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 84% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% 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 — 2 transactions since 2020
  • Related listed building consents — 7 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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  10. Ferry Quay and Including Raised Pavement to West Grade II 106 m