The Old Mansion and Attached Wall, Railings and Lamp Holder is a Grade II* listed building in the Camden local planning authority area, England. First listed on 11 August 1950. A C18 Detached house. 4 related planning applications.

The Old Mansion and Attached Wall, Railings and Lamp Holder

WRENN ID
floating-entrance-curlew
Grade
II*
Local Planning Authority
Camden
Constituency
Hampstead and Highgate MP: Tulip Siddiq (Lab)
Country
England
Date first listed
11 August 1950
Type
Detached house
Address
The Old Mansion and Attached Wall, Railings and Lamp Holder, 94 and 94a, Frognal, NW3 6XB
OS grid reference
TQ 261 857
Coordinates
51.55617, -0.18242
Source
Historic England listing

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

Description

The Old Mansion is a detached house, now sub-divided, dating from around 1700, with wings added in the late 19th century when the north entrance facade was refronted. The south garden facade was refaced in the late 18th century.

The north facade, which serves as the entrance, is constructed of brown brick with red brick dressings and bands at the first floor level and above the first floor windows. It features a slated roof with dormers, tall chimney stacks, and a wooden modillion cornice that rises to form a pediment above a central dormer. The building is two storeys high and has nine windows, along with a three-window projecting bay on the left and a single recessed window on the right. The central porch projects two storeys and includes a doorway with a console-bracketed cornice, an overlight, and a panelled door. The first floor has a round-arched window with intersecting tracery and a cornice. The windows have gauged red brick flat arches and dressings, with flush framed sashes that have exposed boxing.

The south garden facade is made of multi-coloured stock brick with red brick dressings. It features pilasters at the corners that support a moulded brick cornice and a cement parapet. The windows have gauged red brick flat arches and are flanked by 18th-century wooden pilasters. There is an early 19th-century loggia along the ground floor front, which includes a cast-iron arcaded trellis, a balcony, and a tented roof. This loggia was extended in the late 19th century in a similar style at the west end and along the west side of the garden, forming a conservatory.

Inside, the mansion is noted for retaining its panelling. The property also features attached cast-iron railings with urn finials on a stone-capped brick wall, along with a gate pier that includes a cast-iron lamp-holder.

Local climate

The Old Mansion and Attached Wall, Railings and Lamp Holder 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
  • Sale history — 2 transactions since 1996
  • Related listed building consents — 4 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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