Business Details
38 Years
experience
Expert Construction Solutions in Hertfordshire
Pentwyn Build was established by Fraser Welling, who has dedicated his career to the building trade since 1988. Our team combines extensive experience with a commitment to delivering high-quality craftsmanship across residential and commercial projects. We specialise in new builds, extensions, full rebuilds, and refurbishments, ensuring precision from concept to completion. Our approach integrates trusted partnerships with architects and project managers to streamline planning and execution. Customer satisfaction remains our priority, with transparent communication maintained throughout every stage of development. With over 30 years of collective expertise, we utilise skilled tradespeople to meet exacting standards in bricklaying, carpentry, and specialist finishes.Projects range from basement extensions to Grade II listed restorations, reflecting our adaptability and technical proficiency. All work is underpinned by a dedication to quality materials and meticulous attention to detail. Based in Sarratt, Hertfordshire, we serve clients across London and surrounding regions, transforming architectural visions into functional, enduring spaces. Our reputation is built on reliability, professionalism, and the successful delivery of complex projects tailored to individual client needs.
Services
Residential
Commercial
New Builds
Extensions
Full Rebuilds
Refurbishments
Demolition
Basement Extensions
External Restoration
Office Conversion
Details
- Year established: 1988
Highlights and features
- We have over 30 years of experience in residential and commercial construction.
- Our team partners with trusted local architects and project managers.
- We provide full design and build services from planning to completion.
- Our skilled tradespeople ensure precision in bricklaying and carpentry.
- Customer satisfaction is prioritised throughout every project stage.
Services
Residential
Pentwyn Build specialises in creating tailored residential spaces, including full home rebuilds, extensions, and interior refurbishments. Our team ensures modern functionality while maintaining architectural integrity. Whether transforming existing properties or constructing new homes, we prioritise quality materials and client-specific designs to deliver durable, aesthetically pleasing results.
Commercial
We provide comprehensive commercial construction services, ranging from office conversions to large-scale renovations. Our expertise includes structural modifications, interior fit-outs, and compliance with commercial building standards. By collaborating closely with clients, we ensure spaces meet operational needs while maintaining aesthetic appeal and long-term value.
New Builds
From concept to completion, our new build services create bespoke properties tailored to client specifications. Recent projects include semi-detached houses and luxury chalet bungalows, all executed with precision in foundations, structural work, and finishing touches. We manage every detail to ensure seamless delivery of turnkey developments.
Extensions
We design and construct full-width, basement, and multi-storey extensions that enhance property functionality. Our process includes demolition of outdated structures, integration with existing buildings, and high-standard finishes. Each project is managed to maximise space while ensuring structural integrity and compliance with planning regulations.
Refurbishments
Our refurbishment services cover internal and external upgrades, from kitchen and bathroom renovations to full structural restorations. We specialise in modernising older buildings while preserving historical elements, such as in Grade II listed conversions. This includes window and door replacements, brickwork repairs, and interior design enhancements.
People
Fraser Welling
Director
With over 30 years in the building trade since 1988, Fraser Welling combines expertise as a former quantity surveyor and hands-on builder. He leads Pentwyn Build with a focus on quality, managing complex projects and ensuring client satisfaction through precise execution and professional oversight.
Questions
What types of projects does Pentwyn Build undertake?
We specialise in residential and commercial builds, including new constructions, extensions, full refurbishments, and Grade II listed restorations across Hertfordshire and London.
Do you handle planning permissions and design partnerships?
Yes, we collaborate with trusted local architects and project managers to manage planning permissions and deliver comprehensive design and build solutions.
How experienced is your team?
Our team collectively has over 30 years of experience, with expertise in bricklaying, carpentry, structural work, and high-standard finishes for diverse projects.
Can you assist with converting commercial spaces to residential use?
Yes, we have experience converting office buildings into residential apartments, including structural modifications and full interior redesigns.
What areas do you serve?
We operate primarily in Hertfordshire and Greater London, covering locations such as Sarratt, Chorleywood, and Twickenham.
Reviews (3)
Jo O'Sullivan
Apr 01, 2021
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Positive:Professionalism,Quality
A high quality finish was delivered for my building project recently, an honest, reliable service all round - would definitely recommend.
Service:Refurbishment
A high quality finish was delivered for my building project recently, an honest, reliable service all round - would definitely recommend.
Service:Refurbishment
Sarah Sheere
Apr 01, 2021
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Positive:Professionalism
Reliable service and delighted with the final result
Service:Refurbishment
Reliable service and delighted with the final result
Service:Refurbishment
Andrea Hogg
Mar 20, 2021
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Pentwyn helped with the design and building work for my house. They were fantastic and I am delighted with the end result.
Services:Design,Exterior decorating,Refurbishment,Interior decorating
Services:Design,Exterior decorating,Refurbishment,Interior decorating
