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Business Details
Award-Winning Architects in West London
A3 Associates are contemporary, award-winning architects based in West London. We specialise in residential new build, interior architecture, and complex refurbishment projects for private and institutional clients. With over 25 years of combined experience, our team prioritises elegant, modern design solutions that balance functionality and budget. We are committed to sustainable practices, adhering to LETI retrofit energy standards and advocating for low-carbon construction through our membership in Architects Declare. Our services span Fulham, Hammersmith, Kensington, Chelsea, and Wandsworth, delivering tailored architectural solutions that integrate natural light, efficient space organisation, and innovative storage.

Principal Ian Hossack brings expertise in masterplanning, schools, offices, and low-energy projects, supported by a track record of RIBA and Civic Trust Awards. We manage projects from initial design through to construction, ensuring compliance with legislative requirements and client expectations. Our focus on thermal comfort, energy efficiency, and asset value enhancement reflects our dedication to creating healthier, more sustainable built environments.
Services
Residential Architecture Commercial Architecture Project Management Net Zero Retrofit Design Consultation
Highlights and features
  • We have over 25 years of experience in residential and commercial architecture.
  • Our team has won RIBA and Civic Trust Awards for design excellence.
  • We are committed to low-carbon construction and LETI retrofit standards.
  • We provide tailored solutions balancing design and budgetary requirements.
  • Our project management ensures compliance from planning to completion.
Associations and certifications
  • RIBA
  • Architects Declare
Services
Residential Architecture
We create modern residential designs tailored to client needs, focusing on functionality and aesthetics. Our services include new builds, extensions, and high-end refurbishments. With expertise in space optimisation and natural light integration, we deliver homes that combine comfort, storage, and energy efficiency while adhering to budgetary constraints.
Net Zero Retrofit
Our net-zero retrofit solutions enhance energy efficiency for pre-war housing. We implement airtight construction, insulation, and heat pumps to reduce carbon footprints. By following LETI standards, we ensure lower utility bills, improved thermal comfort, and increased property value through sustainable, future-proof upgrades.
Project Management
We manage architectural projects from planning to completion, ensuring compliance with design and legislative standards. Our team coordinates consultants, oversees contracts, and conducts site visits to monitor progress. This comprehensive approach guarantees timely delivery, cost control, and adherence to client specifications throughout the construction process.
People
Ian Hossack
Principal
Ian Hossack is a principal architect with expertise in masterplanning, schools, offices, and low-energy projects. He has received RIBA and Civic Trust Awards for innovative design solutions. His focus on sustainable architecture drives A3 Associates' commitment to net-zero retrofit standards.
Questions
What areas do A3 Associates operate in?
We provide architectural services across Fulham, Hammersmith, Kensington, Chelsea, and Wandsworth in London.
What is A3 Associates' approach to sustainable design?
We adhere to LETI retrofit energy standards and advocate for low-carbon construction through our membership in Architects Declare. Our projects prioritise insulation, heat pumps, and energy-efficient materials.
What types of projects does A3 Associates handle?
We specialise in residential new builds, commercial architecture, high-end refurbishments, and net-zero retrofit projects for private and institutional clients.
How are project costs structured?
Costs depend on project scope. Planning permission fees range from £1,500–2,500, while construction management is 2.6–3.5% of the total construction cost.
Does A3 Associates offer project management services?
Yes, we manage projects from initial design through to completion, including consultant coordination, contract administration, and on-site progress monitoring.