Single storey rear extension in charred timber and brick

Quartet Architecture is a Royal Institute of British Architects (RIBA) chartered practice, specialising in the design and delivery of bespoke residential architecture across London and the surrounding areas. With over 25 years of experience and more than 75 years of collective expertise within our team of architects and architectural technicians, we offer a full range of architectural services, from contemporary house extensions to large-scale new builds.

As established architects in Wandsworth, we are ideally located to serve clients throughout South West London, including areas such as Clapham, Battersea, Wimbledon, Putney, and beyond. Our extensive knowledge of planning regulations, combined with a passion for thoughtful, creative design, allows us to maximise every opportunity and add long-term value to your home.

We pride ourselves on producing innovative, context-driven design schemes tailored to our clients’ needs. Our architecture is both aesthetically striking and highly functional, always grounded in a deep understanding of the brief, the site, and the people who will live in the space. We believe every home should reflect the personality, lifestyle, and aspirations of its occupants.

Whether you’re considering a kitchen extension, a basement conversion, or a complete house renovation, our collaborative approach ensures that your vision becomes a reality. If you're planning a residential project and need experienced London architects, we'd love to help bring your ideas to life.

Selected projects

A New England style house on the south coast with swimming pool and pool house with redesigned gardens.
Interior view of a modern home foyer featuring a dark wood herringbone parquet floor, a curved staircase with black metal railing and beige carpeted steps, white walls with decorative molding, a colorful abstract painting on the wall, and a dark wood side table with a white lamp and green decorative vases.
Living room seen through doorway, with yellow armchairs, sofa, black fireplace, built-in shelves, and chandelier.
Modern house with white upper floors and a glass rear extension surrounded by a lush green garden with trees, shrubs, and flowers.
Open-concept kitchen and dining area with large floor-to-ceiling windows, modern white island with a sink, dining table with chairs, and a view of a backyard with grass and outdoor furniture.
View of a backyard garden through large glass sliding doors, with a patio table and chairs, a sofa with cushions, trees, and a fenced yard in the background.
A backyard patio with outdoor dining table and chairs, enclosed by a wooden privacy fence, adjacent to a brick house with large windows and a modern glass addition leading to an indoor kitchen area.
Interior view of a modern living space with a staircase, picture frames, a brown leather armchair, a gray sofa, and a white wall with a fireplace, with large black pendant lights hanging from the ceiling.
Modern dining area with wooden table, six chairs, and a glass staircase, bright natural light, and sliding glass door leading to an outdoor space.
View of a modern backyard patio with potted bonsai trees, a glass sliding door leading into the house, and a dining table with chairs outside.
Modern, multi-story house with large glass windows, illuminated from inside, on a residential street at dusk.
Open-concept modern kitchen and living room with large windows, white cabinetry, and a central island with a gas stovetop, overlooking a backyard with green grass, trees, and outdoor furniture.
Minimalist dining room with white walls, large window, round marble table, mismatched chairs, a sideboard, potted plant, and modern pendant lights.
Interior view of a modern loft with brick walls, featuring a vintage car in the foreground, a glass partition, and a living space with artwork, pictures, a bicycle, and a bicycle trainer.
Modern multi-story house with a patio, large glass doors, and an outdoor dining table with chairs, illuminated interiors visible through windows.

Concept design | work in progress

A large multi-story house with a white and stone exterior, surrounded by a manicured lawn and colorful flower beds, with trees and a blue sky in the background.
Modern house with white and brick exterior, large glass-enclosed porch, green lawn, and blue sky.
Modern interior space with stairs leading to a patio with a tree, outdoor stairs, and plants in pots.
Modern multi-story house with brick and stucco exterior, large windows, patio area with furniture, and landscaped garden with flowers and shrubs.
Modern kitchen with island, light wood cabinets, pendant lighting, staircase with bookshelves, and a wine cellar with glass door.
Modern open-concept kitchen and dining area with white and black cabinetry, brick accent wall, and large windows with greenery outside.

Practice information

Interior view of a elegant foyer area with dark herringbone hardwood floors, a staircase with black metal railing, white walls with decorative molding, large window with glass panes, and colorful abstract painting on the wall.

Services

High-end residential renovation + restoration

High-end residential new build

Basements | extensions | refurbishments

Full RIBA service + partial service as required

Locations

South West London

Home Counties

Cotswolds

Links

Instagram

Logo for RIBA Chartered Practice.

Accreditations

Logo of the Architects Registration Board.

RIBA Chartered Residential Architects in Wandsworth, London