Bronze-clad extension at Hampstead House by Dominic McKenzie Architects

Dominic McKenzie experiments with bronze and zigzags in Hampstead House renovation

Dominic McKenzie Architects has overhauled a Victorian house in north London, adding an extension with a zigzagging outline, bronze exterior and maple wood interior.

The Hampstead House project involved a complete renovation of the four-storey property, reconfiguring the existing interior to be more space-efficient, and replacing a previous extension at the rear to create a larger lounge and dining room.

Bronze-clad extension at Hampstead House by Dominic McKenzie Architects
The extension is clad in handmade bronze tiles

Architect Dominic McKenzie and his team sought to restore the Victorian character of the main house in their design. At the same time, they wanted to create a modern extension with its own personality.

"With Hampstead House we wanted to try to create something more imaginative than you sometimes see with London house extensions," McKenzie told Dezeen.

"We wanted to get away from the standard box-like extrusion to create more volumetrically interesting space, with an individual material character that brings a sense of quality."

Maple-lined interior in Hampstead House by Dominic McKenzie Architects
Internally the extension is lined with maple wood

The architects used a gable form that is common of houses in the area and used it to generate the zigzagging form of the extension's roof. At one end, it creates a dramatic ceiling above the dining area, while the other end steps up to create a new first-floor office.

Externally this extension is clad in handmade bronze tiles, which are folded to create a pattern of tessellating triangles. The idea was to create a shape that matched the shape of the roof, and a colour that toned with the original brickwork.

Dining table in Hampstead House by Dominic McKenzie Architects
Glass doors open the space up to the garden

"Using a metal meant the same material could be used for the walls and roof, allowing the extension to become a more abstracted sculptural object," said McKenzie.

"We also liked the way bronze ages," he continued. "We thought tonally the bronze would stay in keeping with the original building as it aged, whereas copper by contrast would gradually go green."

View through window of first-floor office in Hampstead House by Dominic McKenzie Architects
The extension creates a new office on the first floor

With fully glazed walls, the new lounge and dining room could easily have felt cold and minimal, but the addition of maple wood panels on the walls and ceiling bring a sense of warmth to the space.

The extension is connected to the front of the house by a glass-roofed "garden passage".

Living room in Hampstead House by Dominic McKenzie Architects
Dominic McKenzie Architects collaborated with designer Suzy Hoodless throughout

For the rest of the house, the architects worked closely alongside interior designer Suzy Hoodless to create a series of spaces that respect the heritage of the building, but are also suited to family life.

The clients – a family of four – see this house as their forever home, so they want it to be flexible for the future.

Entrance hallway in Hampstead House by Dominic McKenzie Architects
The original staircase was reinstated at the centre of the house

One of the most important changes was to reinstate the original staircase at the centre of the house. The previous owners had relocated this to the rear, which made poor use of space.

The relocation of this staircase allowed the basement to be completely reorganised, allowing a bedroom to move to a space with better natural light. Meanwhile, the relocation of the office freed up space for an extra bedroom on the second floor.

Kitchen in Hampstead House by Dominic McKenzie Architects
The kitchen features an island counter in grey marble

Hoodless worked on interiors throughout the house, using a material palette that works with both the Victorian details and the contemporary additions.

In a small library, located off the main living room, walnut shelving and a fireplace made from Welsh slate offer a sense of quality. In the kitchen, she chose a grey marble, while the master bedroom is lined with travertine.

Glass-roofed garden passage in Hampstead House by Dominic McKenzie Architects
A glass-roofed corridor links the extension with the front of the house

"We think the project is richer for the collaboration between architects and interior designers," said McKenzie. "Suzy understands both modern and historic design and brings a well judged feeling for luxury."

McKenzie founded his London-based studio in 2011. His other projects in the city include a tower-like house house extension in Islington and an office for a music management company.

Photography is by Will Pryce.

More images and plans

Basement floor plan
Basement floor plan
Ground floor plan
Ground floor plan
First floor plan
First floor plan
Second floor plan
Second floor plan
Previous basement floor plan
Previous basement floor plan
Previous ground floor plan
Previous ground floor plan
Previous first floor plan
Previous first floor plan
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Previous second floor plan
Section A
Section A
Section B
Section B
Rear elevation
Rear elevation
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Night view of Hampstead House by Dominic McKenzie Architects
Night view of Hampstead House by Dominic McKenzie Architects
Bronze-clad extension at Hampstead House by Dominic McKenzie Architects
Bronze-clad extension at Hampstead House by Dominic McKenzie Architects
View through to new extension in Hampstead House by Dominic McKenzie Architects
Glass doors open out to the garden in Hampstead House by Dominic McKenzie Architects
Dining room and lounge space in Hampstead House by Dominic McKenzie Architects
New dining room in Hampstead House by Dominic McKenzie Architects
Walnut-lined library in Hampstead House by Dominic McKenzie Architects
Glass-roofed garden passage in Hampstead House by Dominic McKenzie Architects
Reinstated staircase in Hampstead House by Dominic McKenzie Architects
First-floor office in Hampstead House by Dominic McKenzie Architects
Bedroom in Hampstead House by Dominic McKenzie Architects
Bathroom in Hampstead House by Dominic McKenzie Architects
Bathroom in Hampstead House by Dominic McKenzie Architects
Bathroom in Hampstead House by Dominic McKenzie Architects