Patinated steel frame doors to the roof garden with skylight behind
The new rooftop garden forms a verdant oasis at the centre of the home
Residential — Refurbishment & extension

Garden Penthouse, Pont Street

Knightsbridge, London
Residential Listed Penthouse

Three apartments were cut and carved out of the Cadogan red skyline into one garden penthouse

Full refurbishment and extension of a Grade II listed building, amalgamating 3 apartments into 1. It is spread out on the upper floors behind a historic red brick facade, designed in a style coined ‘Pont Street Dutch’.

Red brick facade to Pont Street
It is spread out on the upper floors behind this historic red brick facade, designed in a style coined ‘Pont Street Dutch’
Red brick listed facade detail on Pont Street
The colour, cut and moulding of the brickwork are a signature of the estate
Lantern rooflight view to roof terrace
A modern extension floats over the relatively modest interior behind this ornate facade, bringing light and air into the deep plan
Roof terrace garden at dusk
Concept

Our concept was to create a new focus, a verdant airy garden at the heart of the home, around which all the spaces revolve.

This garden creates an element of surprise on arrival, as well as a two-level entertaining space which celebrates the heritage roofscape and long-distance views over London.

Entrance hall opening onto roof garden
Entrance hall with rooflights and marble floor
Concept model roof terrace
Early working models helped clear the clutter and highlight the clarity of the original roof forms
Section drawing through roof terrace
The succession of angular gables became a defining feature of the new terrace, a theatrical backdrop to the new garden
Doors opening onto roof terrace
The main entrance, direct by lift, opens onto the terraced roof garden
Cantilevered steel stair up green roof to terrace
Lantern rooflight on roof terrace
Marble floor to roof terrace, with bronze doors
Timber A frame to roof, with king post
Sunken bath below rooflight, with stone mosaic
Isometric diagram of main circulation, with roof garden at centre
Interiors
View of roof terrace through rooflight over main stair
Top-lit entrance hall with roof terrace beyond
Round walk-on rooflight from below
Flowers on roof garden with brick facade
Steel frame glazing with marble floor and planting
Penthouse apartment plan
Pitched rooflight in roof garden
Undermounted bath beside skylight surrounded by stone mosaic
Historic beam on stone corbel, below rooflight
Penthouse apartment lower plan
Bronze balustrade detail
Lantern rooflight detail
Cantilevered stair on green roof detail
Perspective sketch of roof garden concept
Dining room herringbone wood floor
Contemporary living room with exposed timber beams
Exposed timber beams to dining room
Skylights in historic building
Sliding glazed doors to entrance hall
Master bedroom with panelled wall
Detail of stone mosaic to rooflight
Detail of cantilevered steel stair over green roof
New glass extension with rooflight and terrace garden
Marble counter and mosaic walls beside walk-in shower
Daylight through new roof lights
Green roof with historic chimneys
Construction
Site demolition in progress around lift
Bespoke tiled marble floor under construction
Steel beam brick wall junction
Polygon marble tile detail
Circular rooflight opening on flat roof under construction
Hoist installing new rooflight
ArchitectNicholas Zervoglos Architects
PlannerNicholas Zervoglos Architects & part Savills
Interior designerKitesgrove
Structural engineerPrice & Myers
Landscape architectCameron Gardens
Project managerKitesgrove
General contractorJusto