About Simon Mack Architecture
We're a RIBA Chartered architectural practice based in Henley-on-Thames, specialising in residential design across Oxfordshire, Berkshire, and Buckinghamshire. Since 2011, we've been creating exceptional homes and extensions for clients who value thoughtful sustainable design, expert construction knowledge, and personal service.
Our Design Philosophy
We design from the inside out. Before we consider what a building looks like, we understand how you want to live in it. How does your family use the kitchen? Where does natural light matter most? How do spaces connect and flow? We also make sure the building looks fabulous too!
This approach means we create homes that work beautifully for daily life, not just on paper, but in reality. Our detailed technical drawings ensure contractors can build exactly what we've designed, minimising variations, delays, and budget surprises.
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:

• We listen carefully to understand what you want to achieve

• We explore design possibilities through sketches, 3D models, and virtual reality walkthroughs

• We provide honest advice about feasibility, planning constraints, and realistic budgets

• We deliver detailed drawings that give you, and your contractor, complete clarity

• We build genuine relationships, becoming trusted advisors throughout your project and beyond

RIBA Chartered Practice
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.
Allow us to introduce you to our talented team: