50 Extension architects

Extension Architect

A home is one of the most precious assets a person can own. Taking care of it is akin to taking care of oneself. A true living space, a home adapts to the needs of its owners and sometimes requires work to be carried out — including the addition of an extension.

Whether built to gain extra living space, attached to the existing home, or added as an upper storey, an extension serves more than one purpose.

To achieve a functional home extension that matches your vision, a specialist architect is your greatest ally.

Why choose a specialist architect for your home extension?

An architect is not always mandatory for a home extension project. However, calling on this building, construction, and renovation professional brings a number of significant advantages.

An extension in harmony with your home
Adding an extension to your home comes with many challenges. The first is creating a space that is in perfect harmony with your existing home and living environment. Whether in terms of exterior or interior cohesion, working with an architect allows you to choose the type of extension, the materials, and the construction style — ensuring the new space integrates seamlessly with your home.

A project tailored to your budget
A home extension is a project that requires careful planning from the outset. Between site preparation, materials, and labour, expanding your living space requires a considerable budget.

An architect can assist you as the project manager. They design the plans, oversee the works, and coordinate the various tradespeople — all while working within your budget. The best way to avoid unwelcome surprises.

Achieving a functional and practical space
A home extension is more than just extra floor space attached to a main building or added on top of it. Above all, it must be functional and comfortable. Whether it's a conservatory, a garage, or an additional room, the specialist architect carries out the work so that the extension fulfils its primary purpose.

Insulation, natural light, electrical wiring, built-in storage — your new room is immediately ready to use.

Anne-Sophie Doneche is an architect ARB / DE HMONP who previously worked at the a large firm based in London. An experienced project manager as well as architect, Anne-Sophie Doneche offers a wide range of services from planning and technical design to tender and construction management, for various property types including residential buildings, hospitality buildings and retail spaces. 

6 property types

Single-Family Homes

Commercial Buildings

7 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Norrie Toch Studios Ltd was established in 1992 and provides services in the fields of Architecture, Planning, Urban Design and Interior Design. The company is involved in new built, regeneration and refurbishment projects throughout the United Kingdom and abroad, from master planning to housing, r

15 property types

Single-Family Homes

Offices

5 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Studio Epitome is design led practice based in London with more than 30 years of experience in the architectural profession, having worked previously on a range of projects in UK, France and Spain. Their work process offers a tailor made architectural service which begins with close working relationships with clients to develop detailed briefs.

10 property types

Single-Family Homes

Offices

8 types of work

Extension

New Build

3 services

Design / Plans

Planning permission application

With over 15 years of practical experience, Marc Tuitt has a proven track record of producing high quality architecture. His studio, Natureworks Design, is a research-led architecture and design practice. The studio possesses a particular passion for beautiful architecture that has a positive social and environmental impact.

14 property types

Single-Family Homes

Offices

10 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

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Based in Oxford, Resonant Architecture is an architecture and urbanism practice whose work is rooted in the belief that great design does not have to damage the world in which we live. The practice’s goal is to provide solutions. 

16 property types

Single-Family Homes

Offices

6 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

For 19 years the team of professionals at Tonkin Liu have been designing and delivering highly acclaimed buildings, landscapes, and sculptures. Together they solve the unique needs of their ambitious clients through an emphatic search for optimal design solutions.

14 property types

Single-Family Homes

Flats / Lofts

8 types of work

Extension

New Build

3 services

Design / Plans

Planning permission application

LUCA was founded in 2013 by two chartered senior architects, Alex Schramm and Shin Yu. Both have led large teams delivering award-winning projects internationally and decided to set up a practice with a focus on clients, end-users and the environment.

9 property types

Single-Family Homes

Offices

7 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Led by Nick Rees, an award winning architect with over 16 years industry experience, NRDA is a full service architecture practice specialising in residential, commercial and hospitality design.

14 property types

Single-Family Homes

Offices

11 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

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we can define your project

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Lumin Architects designs through a customer-centred lens so that each project is warm, welcoming and completely bespoke. From initial feasibility studies to obtaining planning permission, all the way through to tender and construction phases, they are fully equipped to accompany you through every stage of your project.

11 property types

Single-Family Homes

Offices

7 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Founded by architect James Hampton, New Makers Bureau is a London-based RIBA Chartered Architecture Practice that believes that imaginative, environmental architecture is the key to creating a positive force for good in the world.  

7 property types

Single-Family Homes

Flats / Lofts

6 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Based in Cheam, Happy Building is an architectural design and construction management company with a love of creative inspiration. They have undertaken over 200 planning applications and 50 construction projects per year and they offer In-house expert teams for every stage of your project: Architects, Interior Designers, Engineers, Project Managers, Project Architects, Construction Teams. 

4 property types

Single-Family Homes

Flats / Lofts

6 types of work

Extension

New Build

3 services

Design / Plans

Planning permission application

Akira Yamanaka Architects (AYA) is a London-based architectural design studio founded by Akira Yamanaka, a RIBA chartered architect and a Certified Passive House Designer. AYA endeavours to provide functional, sustainable, aesthetic and economically viable design solutions tailored for each project utilising the most advanced digital design technologies, hand sketching and skilful craftsmanship.

13 property types

Single-Family Homes

Healthcare

8 types of work

Extension

New Build

3 services

Design / Plans

Planning permission application

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Charles Mullineux Design places the client at the heart of everything they do. They are based in Cheltenham and work both within this city and throughout the Cotswolds.

3 property types

Single-Family Homes

Townhouse

6 types of work

Extension

New Build

4 services

Design / Plans

Consulting

Architect Charles Coull B.Arch.(Hons), Dip. Arch., RIBA is the Managing Director of the RIBA chartered practice Coull Architecture Ltd. based in London. Benefiting from the architect’s wide range of experience, the dynamic young studio is driven by a dual pursuit of quality in both the service they provide and the designs they create. 

10 property types

Single-Family Homes

Offices

5 types of work

Extension

New Build

4 services

Consulting

Design / Plans

John Kelshaw is an architect with an exceptional depth of experience acquired over 20 years in both the public and private sectors, from residential and commercial architecture to healthcare and community projects. His firm John Kelshaw Architects Ltd. is based in Oxton and Cheshire, offering full architectural services to clients throughout the UK.

5 property types

Single-Family Homes

Historical / Listed Buildings

9 types of work

Extension

New Build

3 services

Design / Plans

Planning permission application

Benchmark Architects is an architecture and design studio based in London and Ampthill. They pride themselves on the quality of their designs, and they are always looking to challenge the established order of what architecture can and cannot be.

6 property types

Single-Family Homes

Multi-unit Residential Buildings

7 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Together
we can define your project

Make a free appointment with our specialist advisor.

Request a meeting
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Luca Arnaud Architecture is a young and vibrant architecture studio, based in London. It is headed by Luca Arnaud, who has been working in the UK since 2006, and has carried out a wide range of different architectural projects all over the world.

8 property types

Single-Family Homes

Commercial Buildings

11 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Joseph Faycal and his colleagues pride themselves in the way they work : they believe firmly in communicating with the client at each stage of the process, to ensure that the result of the work is exactly as the client had envisaged it. The studio’s architects also make sure their designs are fully respectful of the environment: the studio believes that this is one of the most important aspects of their profession.

8 property types

Single-Family Homes

Offices

4 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Urban Jan is a RIBA-chartered architecture studio based in London. Their designs incarnate elegance, style, and contemporary urban living.

7 property types

Single-Family Homes

Commercial Buildings

7 types of work

Extension

New Build

4 services

Design / Plans

Planning permission application

studioDA is an architecture, design and technology studio operated by three directors: Pereen d’Avoine, Nilesh Shah and Pierre d’Avoine. This studio places innovation and evolution at the heart of everything they do.

9 property types

Single-Family Homes

Offices

11 types of work

Extension

New Build

3 services

Design / Plans

Planning permission application