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Business Details
7 Years
experience
Bespoke Residential Architecture in Cheltenham & Across the UK
Lewis Critchley Architects is a RIBA Chartered architectural practice based in the Cotswolds, Gloucestershire, specialising in bespoke residential design. Established in 2019, the firm combines over two decades of industry experience with a client-centric approach to deliver innovative, context-driven architecture. Our services span from initial consultation and concept design to planning applications, technical design, and construction oversight. We prioritise collaboration, ensuring every project reflects the client's vision while adhering to functional and aesthetic excellence. With a focus on residential extensions, new builds, and multi-unit developments, we work locally and across the UK.

Our process follows the RIBA Plan of Work 2020, ensuring clarity and transparency for clients unfamiliar with architectural procedures. We are committed to sustainable, detail-oriented design that enhances both spaces and the lives of those who inhabit them. Our team includes award-winning professionals with a proven track record in diverse architectural projects. Client testimonials highlight our creativity, project management skills, and ability to transform complex challenges into exceptional built solutions.
Services
Residential architecture New build design Home extensions Concept design Planning applications
Details
  • Year established: 2019
Highlights and features
  • RIBA Chartered practice ensuring industry-leading standards
  • Client-centric approach prioritising individual needs and aspirations
  • Specialists in residential architecture with 20+ years' experience
  • Transparent, step-by-step process aligned with RIBA guidelines
  • Award-winning team with proven expertise in complex projects
Associations and certifications
  • RIBA
What people say
Top of his game Very approachable Gift for transforming spaces Excellent project manager Client-focused approach
Services
Residential architecture
We create tailored residential spaces that balance aesthetic appeal with functional excellence. Our designs respond to site context and client needs, from single-house extensions to large-scale housing developments. With RIBA Chartered expertise, we ensure every project meets regulatory standards while exceeding expectations.
New build design
Specialist new build services covering contemporary family homes and multi-unit schemes. We guide clients through feasibility studies, planning permissions, and construction phases. Our designs prioritise sustainability, natural light integration, and seamless indoor-outdoor connections across Gloucestershire and the UK.
Home extensions
From kitchen extensions to full rear additions, we maximise living space while maintaining architectural integrity. Our process includes site analysis, planning applications, and contractor coordination. Clients benefit from cost-effective solutions that enhance property value and daily functionality.
Concept design
We develop creative briefs into visual concepts through detailed sketches and digital models. This stage establishes spatial relationships, material selections, and budget parameters. Our iterative approach ensures alignment with client vision before progressing to technical documentation.
Planning applications
Comprehensive planning support including document preparation and council liaison. We manage applications for extensions (from 206) and new builds (462), addressing local authority requirements. Our success rate reflects deep knowledge of UK planning regulations and design guidelines.
People
Lewis Critchley
Founding Director
RIBA Chartered architect with 20+ years' experience in residential, commercial, and education sectors. Specialises in bespoke design, client collaboration, and project management from concept to completion.
David Lees
Principal Consultant
Award-winning architect with a distinguished academic background from the University of Sheffield. Brings intellectual rigor to projects, having worked at leading practices and operated his own successful firm.
Questions
What architectural services do you offer?
We specialise in residential architecture including new builds, extensions, and housing schemes across Gloucestershire and the UK.
What is your design process?
Our 4-stage process follows RIBA guidelines: consultation, concept design, technical planning, and construction oversight with regular client updates.
How much do planning applications cost?
Council fees range from £206 for extensions to £462 for new builds, excluding our professional design fees.
Do you work outside Gloucestershire?
Yes, while based in the Cotswolds, we undertake projects across the UK including Dorset, Herefordshire, and Surrey.
How do you involve clients in design decisions?
We maintain continuous collaboration through regular consultations, detailed concept reviews, and transparent budget management at every project stage.
What makes your firm different?
RIBA Chartered status, 20+ years' experience, and a commitment to creating context-sensitive architecture that prioritises client aspirations.