Planning a House Extension or New Build Project?
Getting in touch with an architect is a big step on your part so let us tell you about what we do and why we do it. Simon Mack Architecture provides expert architectural design services for residential extensions and new homes across Oxfordshire, Berkshire and Buckinghamshire. We specialise in residential projects, delivering bespoke, detailed designs that maximise space, minimise construction changes, and keep your project on budget. We love helping to create happier, healthier homes.
Find out more about our most frequently requested architectural services:
As a RIBA Chartered Practice, we meet rigorous professional standards for quality, insurance, and client care. This accreditation gives you confidence that your project is in experienced hands, with proper contracts, appropriate insurance, and professional oversight throughout.


WHY DO YOU NEED AN ARCHITECT?
Our architectural services guide you through every stage, from initial design concepts and planning permission to construction management and completion. We design from the inside out, creating homes and extensions that are curated around the way you live, with meticulous attention to buildability and detail. Whether you're planning a contemporary house extension, a complete home renovation, or a new-build house, our experienced team ensures your vision becomes reality. As a RIBA Chartered Practice you can be sure of our excellent professionalism and up to date knowledge of regulations, technology and materials.

HOW WE WORK WITH YOU
You and your project are unique. If you need our full architectural service from initial sketches through to construction completion or just planning drawings for an extension. We tailor our involvement to suit you:
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We listen carefully to understand what you want to achieve
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We explore design possibilities through sketches, 3D models, and virtual reality walk throughs
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We provide honest advice about feasibility, planning constraints, and realistic budgets
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We deliver detailed drawings that give you, and your contractor, complete clarity
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We build genuine relationships, becoming trusted advisors throughout your project and beyond

Free Consultation to Start Your Project with Expert Advice
Thinking about extending your home or building a new house in Oxfordshire, Berkshire, or Buckinghamshire? We offer a complimentary 30-minute consultation to discuss your architectural project, get to know you and explore what's achievable.
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During your free consultation, we'll:
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Assess your plot’s requirements or your property's potential for extension or renovation
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Discuss planning constraints and opportunities specific to your local council
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Discuss initial design ideas tailored to how you use your space
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Outline realistic budgets and timelines
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Explain the architectural design and planning process
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This no-obligation meeting gives you clarity on your project's feasibility before any commitment and gives you a chance to meet the team.