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Award-Winning Architectural Design in London
A3 Associates are contemporary, award-winning architects based in Fulham, West London, with over 25 years of collective experience in delivering architectural design solutions for private and institutional clients across London. Our expertise spans residential new builds, interior architecture, and complex refurbishment projects, with a focus on creating elegant, modern designs that balance functionality and budget efficiency. We specialise in high-end residential extensions and renovations, prioritising natural light, spatial organisation, and sustainable materials. As signatories of Architects Declare, we are committed to advancing Net Zero Retrofit principles through LETI energy standards, integrating low-carbon technologies like air-source heat pumps and solar PV panels.

Our team manages projects from initial planning permission to construction completion, ensuring compliance with design specifications and legislative requirements. With a proven track record in commercial, residential, and institutional projectsincluding major schools and office developmentswe combine technical expertise with a client-centric approach. Principal Ian Hossack brings extensive experience in masterplanning, low-energy projects, and award-winning design, having received recognition from RIBA and the Civic Trust. Based in SW6, we serve Fulham, Hammersmith, Kensington, Chelsea, and Wandsworth, offering tailored architectural solutions that enhance property value and occupant well-being.
Services
Architectural Design Residential Projects Commercial Projects Net Zero Retrofit Project Management
Highlights and features
  • We have over 25 years of experience in residential, commercial, and institutional architecture.
  • Our team includes RIBA-awarded Principal Ian Hossack with expertise in low-energy projects.
  • We are committed to Net Zero Retrofit principles through LETI energy standards.
  • We offer end-to-end project management from planning permission to construction completion.
  • Our designs prioritise natural light, thermal comfort, and sustainable material integration.
Services
Architectural Design
We create modern, functional architectural designs tailored to residential and commercial projects. Our approach integrates natural light, spatial efficiency, and sustainable materials to enhance usability and aesthetics. Clients benefit from bespoke solutions that align with their vision and budget.
Net Zero Retrofit
Our Net Zero Retrofit services apply LETI energy standards to reduce carbon footprints. Features include insulation upgrades, air-source heat pumps, and solar PV panels. This improves thermal comfort, lowers utility bills, and increases property value through sustainable practices.
Project Management
We oversee projects from planning permission to construction completion. Our management ensures compliance with design specifications, legislative requirements, and budget constraints. Regular site visits guarantee quality control and timely delivery for residential and commercial developments.
Residential Projects
Specialising in high-end residential refurbishments and extensions, we focus on maximising space, light, and storage. Our designs incorporate hidden structural integration and energy-efficient solutions, transforming properties into modern, comfortable living environments.
Commercial Projects
We deliver commercial architecture for offices and institutions, prioritising functionality and sustainability. Our projects include major schools and office developments, combining award-winning design with practical layouts that meet organisational needs.
People
Ian Hossack
Principal
Ian Hossack is a RIBA-awarded architect with expertise in masterplanning, low-energy projects, and institutional design. He has led award-winning developments across the UK, including schools and office spaces, and champions Net Zero Retrofit principles.
Questions
What areas do you serve?
We operate across London, including Fulham, Hammersmith, Kensington, Chelsea, and Wandsworth.
What architectural services do you offer?
We specialise in residential and commercial design, Net Zero Retrofit, project management, and planning permission support.
How do you incorporate sustainability into projects?
We follow LETI energy standards, use low-carbon materials, and integrate technologies like heat pumps and solar panels to meet Net Zero goals.
What is your project management process?
We manage projects from initial design to construction completion, ensuring compliance with specifications, budgets, and legislative requirements through regular site visits.
What experience do you have?
Our team has over 25 years of experience in residential, commercial, and institutional projects, including award-winning schools and office developments.