Business Details
26 Years
experience
Expert Construction and Passivhaus Building Services in East Sussex
Rexstone Builders is a family-run building firm established in 2000 near Uckfield, East Sussex. We operate across East Sussex and Kent, collaborating with an experienced team of qualified professionals to deliver refurbishments, conversions, new builds, and extensions to the highest standards. Our full management service coordinates seamlessly with architects, clients, and specialist contractors to ensure timely, budget-conscious completion with premium finishes. We prioritise exceptional organisation, professionalism, and customer communication, specialising in bespoke design-led projects.Recognised for excellence, we were finalists in the British Home Best Extension Award 2018 and the George Clarke Medal 2018. As one of the few East Sussex firms to construct a Passivhaus-certified house, we champion sustainable ultra-low energy building practices. Featured in The Grand Designs magazine, our reputation for craftsmanship, expertise, and client-focused service continues to grow through word-of-mouth. We remain committed to delivering outstanding results for every client.
Services
Refurbishments
Conversions
New Builds
Extensions
Passivhaus Construction
Project Management
Details
- Year established: 2000
Highlights and features
- We have over 20 years of experience in bespoke construction projects.
- Our team includes Passivhaus-certified professionals with specialist expertise.
- Award-finalist track record for design innovation and quality finishes.
- We maintain exceptional client communication throughout every project phase.
- Our work combines traditional craftsmanship with sustainable building practices.
Associations and certifications
- Passivhaus Institute
What people say
High standards
Passion for creating
Second to none communication
Award-winning work
Ultra-low energy buildings
Services
Passivhaus Construction
We specialise in constructing energy-efficient Passivhaus-certified buildings, adhering to rigorous international standards. Our expertise ensures airtight designs, thermal efficiency, and minimal environmental impact. Clients benefit from reduced energy costs and future-proof properties that combine modern aesthetics with ecological responsibility.
Refurbishments
Our refurbishment services transform existing structures while preserving architectural integrity. We modernise layouts, upgrade systems, and enhance aesthetics without compromising structural quality. Clients receive tailored solutions that increase property value and functionality through meticulous attention to detail.
New Builds
We deliver bespoke new-build projects from concept to completion, working closely with architects and designers. Our process prioritises precision, compliance, and client vision realisation. Each project achieves premium finishes, innovative design, and long-term durability in residential and commercial sectors.
Extensions
Our extension services create additional living or working space tailored to client needs. We manage planning constraints, structural integration, and finish coordination. Clients gain functional, aesthetically cohesive additions that enhance property usability while maintaining original character.
Project Management
We oversee all aspects of construction projects, liaising between architects, contractors, and clients. Our management ensures timely delivery, budget adherence, and quality control. Clients benefit from streamlined processes, expert problem-solving, and transparent communication throughout the project lifecycle.
Questions
What areas do you serve?
We operate throughout East Sussex and Kent, delivering projects from initial consultation to completion.
Are you certified for Passivhaus construction?
Yes, we are one of the few firms in East Sussex with experience building Passivhaus-certified properties.
What types of projects do you specialise in?
We focus on bespoke design-led builds, including new constructions, extensions, refurbishments, and energy-efficient Passivhaus projects.
How do you ensure project quality?
Our experienced team maintains rigorous quality control through regular inspections, certified materials, and collaboration with trusted professionals.
Can you manage full construction projects?
Yes, we offer comprehensive project management services, coordinating all aspects from planning to final finishes.
What awards have you won?
We were finalists in the British Home Best Extension Award 2018 and the George Clarke Medal 2018 for design excellence.
