We pride ourselves on clear communication, transparency, and integrity. From the initial consultation to project completion, we ensure our clients are informed and involved every step of the way.
Over four decades of experience have made us a trusted name in the construction industry. You can count on us to deliver exceptional results, on time and within budget, no matter the size or complexity of your project.
Our dedication to quality and customer satisfaction sets us apart. Every project is treated with the same care and attention to detail, ensuring the highest standards are met across all aspects of our work.
At The Martin Sewell Building Company, we specialise in converting historic buildings into stunning, functional spaces while preserving their unique character and architectural heritage. From transforming an old church into a luxury home to converting barns, mills, or other historic structures into modern spaces, our expertise ensures that every project blends timeless beauty with contemporary living or working requirements.
Historic buildings are more than just structures; they are pieces of history with stories to tell. Our team is passionate about protecting the integrity of these buildings while reimagining them for new purposes. Whether you’re looking to create a home, office, or unique event space, we ensure a seamless balance between old and new.







At The Martin Sewell Building Company, we specialise in breathing new life into historic buildings. With expert craftsmanship and a deep respect for heritage, we honour every building’s original charm while seamlessly integrating modern functionality. From bespoke designs to the careful preservation of period features, our team transforms historic spaces with purpose, care, and meticulous attention to detail.
Every historic building is unique, and so are your needs. We work closely with you to design a space that reflects your vision while respecting the building’s architectural features. From open-plan living spaces to intricate period details, we tailor every aspect to suit your lifestyle or business requirements.
Our team specialises in carefully preserving and restoring period features such as timber beams, stonework, stained glass, and ornate plasterwork. These elements are integrated into the new design, ensuring the building retains its historic charm while meeting modern standards.
We have extensive experience in adapting historic buildings for new uses, ensuring structural integrity and compliance with building regulations. Whether it’s reinforcing timber frames, upgrading foundations, or adding new floors or extensions, we handle every aspect with precision and care.
Maintaining the character of a historic property often requires blending original elements with new additions. Our team specialises in seamlessly integrating any new features, whether it’s extensions, structural reinforcements, or updated layouts, while ensuring they complement the existing architecture. This careful balance preserves the authenticity of the building while enhancing its functionality and purpose.
As a Friend of Sussex Heritage Trust, The Martin Sewell Building Company is dedicated to preserving and celebrating the architectural heritage of Sussex. Our expertise in historic conversions reflects this commitment, ensuring that every project we undertake respects the character and history of the property while bringing it up to modern standards of functionality and comfort.
The Sussex Heritage Trust promotes excellence in conservation, and as proud supporters, we share their mission of safeguarding the county’s historic buildings and landscapes for future generations. By choosing us for your historic conversion project, you can trust that your property will be in expert hands, with a focus on craftsmanship, authenticity, and long-lasting quality.
Do you have a historic building brimming with untapped potential? Whether it’s an old church, a mill, or a heritage property, we can help you transform it into a bespoke, functional space that blends timeless character with modern convenience.
At The Martin Sewell Building Company, we combine craftsmanship, experience, and a deep respect for heritage to deliver conversions that are as unique as the buildings themselves. Contact us today to discuss your plans and let us help you breathe new life into history.
We have experience converting a wide range of historic buildings, including churches, barns, and listed properties. Whether you’re looking to create a home or bespoke space, we can adapt the project to suit your needs while respecting the building’s heritage.
Preserving the character of the building is at the heart of what we do. Our skilled craftsmen carefully restore and integrate period features such as timber beams and stonework, ensuring they remain a focal point while blending seamlessly with modern upgrades.
Converting historic buildings can present unique challenges, such as structural issues, strict planning regulations, or preserving delicate features. However, our experienced team is equipped to handle these complexities, ensuring the project runs smoothly while maintaining the building’s integrity and character.
Yes, we can incorporate modern energy-efficient solutions into historic buildings without compromising their heritage. This includes advanced insulation techniques, discreet heating systems, and materials to make the space more sustainable and cost-effective to run.
Your vision is at the heart of the project. We work closely with you throughout the design and construction process to ensure the final result aligns with your needs and preferences while respecting the unique features of the building. Collaboration is key to creating a space that feels truly yours.