Business Details
28 Years
experience
Expert Construction & Building Services in Kent
Established in 1998, Hennessy is a family-run building business based in Swanley, serving London and Kent. With over two decades of experience, we specialise in delivering high-quality building and maintenance services to both private and public sectors. Our reputation is built on a reliable workforce, quick turnaround times, and competitive pricing, ensuring client satisfaction across all projects. We offer a comprehensive range of services, from home improvements like extensions and loft conversions to commercial renovations and heritage restorations. Our team of fully insured, skilled tradesmen prioritises technical excellence and customer care, managing projects from initial design to completion. We maintain strong partnerships with architects and designers to provide full-service design-and-build solutions, simplifying complex projects for clients.Backed by a 10-year IWA insurance guarantee on extensions and conversions, we combine traditional craftsmanship with modern techniques to meet diverse client needs. Our extensive client list includes local councils, property developers, and homeowners, reflecting our adaptability and trustworthiness. Testimonials highlight our professionalism, attention to detail, and commitment to resolving issues efficiently. Whether undertaking small repairs or large-scale developments, Hennessy remains dedicated to delivering value-driven, quality-driven outcomes that exceed expectations.
Services
Extensions
Loft Conversions
Design and Build
Heritage Restoration
Roofing
Kitchens
Bathrooms
Plumbing
Electrical
Scaffolding
Details
- Year established: 1998
Highlights and features
- We have over 20 years of experience in construction and building services.
- Our family-run business prioritises customer care and technical excellence.
- We offer a 10-year IWA insurance guarantee on extensions and conversions.
- Our team includes fully insured, skilled tradesmen for all project needs.
- We manage projects from design to completion with partner architects and designers.
Associations and certifications
- IWA
What people say
Reliable workforce
Quality service
Professional approach
Competitive pricing
Attention to detail
Services
Extensions
Hennessy specialises in creating bespoke home extensions, managing the entire process from design to completion. Our team simplifies planning permissions and offers expert advice to ensure seamless integration with existing properties. Clients benefit from durable, value-adding structures tailored to their specific needs.
Loft Conversions
We transform unused loft spaces into functional areas, handling planning, design, and construction. Our expertise ensures cost-effective solutions that maximise property value while maintaining structural integrity and aesthetic appeal.
Heritage Restoration
Hennessy restores listed buildings and heritage sites using traditional techniques and materials. Our skilled craftsmen preserve architectural authenticity while addressing modern functionality requirements for churches and historic properties.
Design and Build
This service streamlines construction projects by combining design and execution under one contractor. We coordinate with architects and specialists to deliver cohesive, cost-efficient solutions for residential and commercial clients.
Responsive Repairs
We address urgent building repairs for residential and industrial properties, prioritising quick resolution without compromising quality. Services include emergency plumbing, roofing, and structural fixes to minimise disruption.
People
Brendan Hennessy
Director
With over 25 years in construction, Brendan Hennessy co-leads Hennessy Ltd, combining hands-on experience with strategic oversight. Known for his commitment to quality and client relationships, he ensures projects meet exacting standards.
Mark Hennessy
Director
Mark Hennessy brings extensive project management expertise to Hennessy Ltd. His focus on operational efficiency and technical excellence has strengthened the company's reputation for reliable, high-quality building solutions.
Questions
What areas do you serve?
Hennessy operates across London and Kent, providing building services to both urban and suburban locations.
Do you offer guarantees on your work?
Yes, all extensions and conversions come with a 10-year IWA insurance-backed guarantee.
Can you handle both residential and commercial projects?
We cater to both sectors, managing everything from domestic renovations to large-scale commercial developments.
How do I request a quote?
Contact us via phone or email to discuss your project, and we'll arrange a site visit to provide a detailed quotation.
Are your tradesmen fully qualified?
All our contractors are fully insured, skilled professionals with expertise in their respective trades.
Can you assist with planning permissions?
Yes, we guide clients through the planning process, including submitting applications and liaising with local authorities.
