Unitag House is a Grade II listed building in the Westminster local planning authority area, England. First listed on 24 February 1958. Town house. 2 related planning applications.

Unitag House

WRENN ID
endless-stone-nettle
Grade
II
Local Planning Authority
Westminster
Constituency
Cities of London and Westminster MP: Rachel Blake (Lab)
Country
England
Date first listed
24 February 1958
Type
Town house
Address
Unitag House, 18, Curzon Street W1, City of Westminster, W1J 7TE
OS grid reference
TQ 284 802
Coordinates
51.50623, -0.15059
Source
Historic England listing

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

Description

Unitag House is a terraced town house built around 1750-1760. It features darkened brick, a slate roof, and stands four storeys tall with a basement and dormered mansard. The building is three windows wide and has a broad semicircular arched entrance on the left, which includes double panelled doors and stucco flanking pilaster strips topped with a palmette frieze cornice. Above the entrance is a patterned radial fanlight. The windows are recessed sashes without glazing bars, set under flat gauged arches. In the mid-19th century, a rectangular bay window was added to the centre of the first floor. A bracketed stone cornice is present over the second floor, and there is a parapet with coping. The wrought iron area railings feature flambé torch finials.

The interior has been significantly altered, with the original staircase removed. However, it retains an entrance hall with a ceiling made up of shallow flattened domes of Soanic type. Although Soane is known to have worked at No. 19, no original features remain there, and this hall is more in line with his style, suggesting there may have been a renumbering. Additionally, the rear room on the ground floor has a bowed end and features a palmette and anthemion frieze.

Local climate

Unitag House sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 94% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 51% of listed buildings. Of these, 15 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 — 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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Nearby listed buildings

  1. 18e, Curzon Street W1 Grade II 7 m
  2. 9, Curzon Place W1 Grade II 9 m
  3. 19, Curzon Street W1 Grade II 11 m
  4. Part of Aspinall Curzon Grade II* 21 m
  5. Aspinall Curzon, and Stable Quarters at Rear Grade II* 32 m
  6. 4, Curzon Square Grade II 42 m
  7. 21, Pitts Head Mews Grade II 49 m
  8. 5, Stanhope Gate W1 Grade II 55 m
  9. 2, Derby Street Grade II 57 m
  10. 3 and 4, Derby Street W1 Grade II 59 m