Business Details
41 Years
experience
Award-Winning Architectural Design & Conservation Experts
Kay Pilsbury Thomas Architects is a family-run architectural and interior design practice established in 1985. Our expertise lies in blending historic architecture with modern eco-friendly design, specialising in conservation, restoration, and bespoke new-build projects. With over 30 years of experience, we work closely with clients, local authorities, and conservation officers to deliver tailored solutions for listed buildings, manor houses, churches, and eco-homes. Our team collaborates with trusted craftsmen and specialists to ensure projects meet the highest standards of craftsmanship and sustainability.We are committed to preserving architectural heritage while integrating innovative technologies and natural materials. Our services span from initial design concepts to site administration, with a focus on creating spaces that harmonise with their surroundings and meet the evolving needs of our clients. Headquartered in Essex, we serve Cambridgeshire, Hertfordshire, Norfolk, Suffolk, and Bedfordshire.
Services
Architecture
Interior Design
Eco Design
Conservation
Restoration
Details
- Year established: 1985
Highlights and features
- Over 30 years' experience in historic and eco-friendly design
- RIBA and AABC accredited specialists in conservation architecture
- Sustainable approach using local craftsmen and natural materials
- Personalised service with a focus on client collaboration
- Proven track record in navigating complex planning and conservation requirements
Associations and certifications
- RIBA Chartered Practice
- Architects Accredited in Building Conservation (AABC)
- The Green Register
What people say
Remarkable sensitivity
Brilliant expertise
Exceptional service
Unflappable throughout
Best outcomes
Services
Architecture
Specialist architectural services for historic and listed buildings. We create seamless extensions and new builds that respect original structures while meeting modern needs. Our RIBA-accredited team handles planning applications, conservation officer negotiations, and full project management from concept to completion. With expertise in period architecture spanning all eras, we deliver solutions that preserve historical integrity while enhancing functionality for contemporary use.
Interior Design
Tailored interior design for period properties. Our team specialises in restoring historic interiors while incorporating modern comforts. Services include room concept design, material selection, and bespoke joinery specifications. We create detailed schedules for flooring, lighting, and finishes, working closely with clients to maintain architectural authenticity while ensuring practical, beautiful living spaces that reflect individual lifestyles.
Eco Design
Green building solutions combining heritage conservation with modern sustainability. We design low-carbon homes using natural materials like lime plaster and reclaimed timber. Our Green Register-accredited team integrates renewable technologies such as solar panels and rainwater harvesting systems. Projects balance environmental responsibility with historical sensitivity, creating energy-efficient buildings that maintain visual harmony with their surroundings and reduce long-term environmental impact.
Conservation
Expert conservation services for listed buildings and historic structures. We specialise in traditional construction techniques and materials, working with English Heritage and local authorities to preserve architectural heritage. Our approach combines deep historical understanding with practical solutions for maintaining structural integrity while adapting buildings for modern use through careful restoration and sympathetic modifications.
Restoration
Comprehensive restoration of historic properties including manor houses, churches, and barn conversions. We coordinate specialist craftsmen for timber framing, stonework, and decorative features. Our process involves detailed condition assessments, specification of appropriate repair techniques, and management of complex restoration projects to reinstate original architectural features while ensuring structural longevity and compliance with conservation regulations.
People
Sibyl Thomas
Director
Sibyl leads the practice with over 20 years' experience in historic architecture. She specialises in navigating complex conservation requirements while delivering functional modern spaces. Her expertise includes listed building consents and sustainable retrofit projects.
Questions
What architectural services do you specialise in?
We specialise in historic building conservation, eco-design, and bespoke new builds. Our expertise includes listed building extensions, barn conversions, and sustainable renovations that respect architectural heritage.
How do you approach conservation projects?
We combine traditional craftsmanship with modern techniques, working closely with conservation officers to preserve historical integrity while implementing necessary upgrades for modern functionality and energy efficiency.
Do you offer interior design services?
Yes, our in-house interior designers specialise in period-appropriate schemes that incorporate modern comforts. We provide detailed specifications for materials, joinery, and finishes tailored to historic properties.
Which areas do you cover?
We operate across East Anglia including Cambridgeshire, Essex, Hertfordshire, Norfolk, and Suffolk, with a focus on rural historic buildings and conservation areas.
What accreditations do you hold?
We are RIBA Chartered, AABC accredited, and listed on The Green Register. These certifications recognise our expertise in conservation architecture and sustainable building practices.
