Turquoise is a Grade II listed building in the Barnet local planning authority area, England. First listed on 19 March 2002. House. 22 related planning applications.

Turquoise

WRENN ID
solemn-alcove-sedge
Grade
II
Local Planning Authority
Barnet
Constituency
Finchley and Golders Green MP: Sarah Sackman (Lab)
Country
England
Date first listed
19 March 2002
Type
House
Address
Turquoise, 42, the Bishops Avenue, N2 0BA
OS grid reference
TQ 269 884
Coordinates
51.58107, -0.16937
Source
Historic England listing

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

Description

"Turquoise" is a suburban house built in 1913 in the Queen Anne Revival style by the architectural practice of Arnold Dunbar Smith and Cecil Brewer. It is constructed of brown brick with red brick dressings, white-painted woodwork, and a tiled roof. The house is rectangular, with five bays on the main façade and lower wings extending to either side, connecting to a garage via a north-facing courtyard.

The entrance front features a projecting canted bay. Rusticated brick quoins define the sides. Double doors are sheltered by a segmental hood supported by carved consoles, flanked by oval windows. Above the door is a tall, 28-pane mullion and transom window illuminating the stairwell. Ground-floor windows have mullion and transom lights with 4 panes to the upper register and 6 panes to the lower, set within cut brick surrounds with keystones. First-floor windows are eight-pane casements. An eaves cornice and a stone plat band highlight the central bay. Hopper-heads display the date 1913 within decorative scrollwork. Tall chimneystacks are positioned on either side and in the centre of the house, with dormer windows on either side of a raised central section featuring a Venetian window backed by tile hanging, protected by railings at parapet level. A garden-facing bay provides access through French windows under a shallow segmental hood with a keystone. Ground-floor windows have 9/9 panes with shutters, while first-floor windows are 6/6-pane. The attic has four dormer windows. Kitchen and former billiard room wings extend to the north and south respectively, each with gabled ends featuring arched windows facing the entrance front and oval windows facing the garden front. The garage, to the north, has a weatherboarded gable and is approached through a tiled gate.

The interior has been altered, but retains some original features. An oak-panelled entrance lobby leads to an oak staircase that winds around the canted central bay; it features square newel posts, turned column and vase balusters, and a heavy handrail. Octagonal piers support the upper floor. A groin-vaulted passage runs through the ground floor from the entrance to the garden door. The dining room retains Jacobean-revival fielded panelling, including a similarly styled fireplace with an overmantel. Other principal rooms have been modified. Doors are primarily three-panel wooden doors. A pair of painted Doric columns supports the attic above the top of the staircase. Service quarters to the north retain original features, notably an Arts and Crafts-inspired back staircase with an octagonal overlight.

The house was designed by the well-known Edwardian architectural practice Smith and Brewer, representing prevailing trends in traditional house design at the luxury end of the market shortly before the First World War.

Local climate

Turquoise sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 98% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 66% of listed buildings. Of these, 13 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
  • No sale records on file
  • Related listed building consents — 22 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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