About us.
Design 3 is an architectural design studio built on a foundation of passion, experience, and a belief in the power of transformative design. Founded by Harriet French, an architectural designer with over a decade of experience, our practice is driven by a commitment to creating spaces that enhance how people live, work, and feel.
Harriet’s journey began in the renewable energy sector, where she developed a deep understanding of sustainability and innovation. Her career evolved into large-scale residential design, shaping developments for national housebuilders, before shifting focus to bespoke architecture—where her passion for crafting unique, meaningful spaces truly came to life.
At Design 3, we believe architecture is more than just form and function—it’s a tool for improving well-being. Every project we undertake is rooted in a deep respect for context, individuality, and the potential of design to create positive, lasting change.
Whether we’re designing a home, planning a development, or transforming a commercial space, we approach each project with clarity, creativity, and purpose. Our goal is simple: to design spaces that feel as good as they look—and that work beautifully for the people who use them.
Welcome to Design 3—where every design tells a story, and every space is crafted to enrich the lives it touches.
Our studio Will Help To Solve Your design Issues
At Design 3, we collaborate closely with clients to understand their needs, identify opportunities, and respond with creative, functional, and well-considered architectural solutions. Whether it's navigating planning policy, maximising the potential of a tricky site, or bringing a unique vision to life, we’re here to make the process clear, efficient, and inspiring from start to finish.
We help solve:
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Planning and technical design hurdles
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Site constraints and spatial optimisation
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Budget and buildability concerns
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Identity and vision through thoughtful, human-centred design
Project Stages
DESIGN
DESIGN
Why do you need a Designer?
An architectural designer brings more than just ideas to the table—they bring vision, strategy, and expertise to turn your ambitions into beautifully designed, functional spaces.
Here’s why working with an architectural designer is essential:
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Maximise Your Space & Budget
We know how to get the most out of your site, ensuring efficient layouts, smart use of materials, and cost-effective solutions without compromising on quality. -
Navigate Planning & Regulations
From local planning policy to building regulations, we handle the technical side of design so your project runs smoothly and complies with all requirements. -
Solve Problems Creatively
Whether it’s a challenging site or a unique brief, we offer design-led solutions that overcome obstacles and bring added value to your project. -
Create a Cohesive Vision
We ensure every element—from layout and flow to materials and finishes—works in harmony to deliver a space that reflects your lifestyle, brand, or business. -
Add Long-Term Value
Great design enhances not only how a space looks and functions, but also its long-term usability, sustainability, and market value.
RIBA Stage 1 - Preparation & Brief
At stage 1 we work closely with you to understand your goals, site constraints, and vision. This stage includes early research, defining the scope, identifying project risks, and setting a solid foundation for the design process.
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01
RIBA Stage 2 - Concept Design
We begin developing creative ideas and initial layout options based on the brief. This includes outline proposals, spatial arrangements, and design strategies to explore the look, feel, and function of the space.
RIBA Stage 3 - Spatial Coordination
Your preferred concept is developed further into a more detailed design. We coordinate key architectural elements with structural and building services input, ready to submit for planning approval.
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04
RIBA Stage 4 - Technical Design
We produce detailed technical drawings and specifications for construction. This stage ensures everything complies with regulations and is fully coordinated with consultants, ready for tender or building control submission.
RIBA Stage 5 - Manufacturing and Construction
We support the construction process on site, working alongside the contractor to ensure the design is delivered as intended. This includes responding to site queries and reviewing progress against drawings.
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RIBA Stage 6 - Handover
The project is completed, and the building is handed over to you. We assist with final inspections, snagging, and post-occupancy support to ensure everything performs as expected.
