Sean Macmillan Architecture, formed in 2014, is a friendly, client-focussed practice, using considered thinking to make sure proposed designs match client and planning authority requirements, whilst providing aesthetic design sympathetic to individual budgets.  Our architectural designs cover a wide range from contemporary modern through to more traditional.

We work on Residential, Listed Building conservation, Commercial and Retail projects, large or small, from extensions and refurbishments, hard-surface landscaping space design, interior design, bespoke new builds and housing schemes including Eco/Passivhaus Design.

Sean Macmillan RIBA

Sean is a fully qualified Chartered RIBA Architect with a wide range of experience gained over 20 years working in the industry, with a wide range of experience both on large and small projects, from concept, planning, building regulations and tendering to on-site inspection and contract administration. Before starting Elmstone Architectural Ltd. while working for previous practices Sean worked as project Architect on a wide range of projects including a 130 unit and a 86 unit residential apartment development in Guildford and Brighton respectively, as well as smaller bespoke residential, educational and commercial developments across the UK.

Sean has been nominated for a variety of projects and consequently won several awards from RIBA IW and the IW Society. Please see our news page for more information.

Amy Boudewijn MIP, MAAT 

Amy has a BA (Hons) in Business and ensures the smooth running of the office, manages the day-to-day activities within the business and liaises with clients, the design team and stakeholders such as planning officers. Amy is also an AAT Licenced Accountant.

The Team

Sean Macmillan Architecture work closely with other experienced consultants and practices to resource all projects. These include Specialist Planning Consultants, CDM Specialists, Party Wall, Building and Quantity Surveyors.  We are affiliated with Elmstone Engineering Ltd, who  provide Structural Engineering services for both residential and commercial schemes.