
We are experienced building contractors in Winchester and Hampshire, delivering reliable. With decades of experience working on local properties, we have established ourselves as the go-to extension builders in Winchester for homeowners seeking tailored solutions. Over 20 years of successful projects ensure that your build is in expert hands, and we provide clear, upfront quotes with no hidden costs to give you total confidence from start to finish.

We support homeowners with reliable work from experienced Builders Winchester, delivering practical property improvement services.
Home Extensions: Expand your living space with seamless extensions designed around your home needs.
Loft Conversions: Turn unused lofts into bright, practical rooms built for everyday living comfortably.
Renovations & Refurbishments: Refresh tired interiors with structured refurbishments improving layout, flow, and long-term value.
New Builds: From groundwork to completion, we deliver well-managed new builds with consistent quality.
Compliant building solutions from building contractors in Winchester; support residents through regulated planning, inspections, and approvals. Bespoke carpentry delivers tailored joinery solutions, improving functionality, finishes, and long-term durability for homes. Structural alterations are planned carefully, ensuring safety, stability, and compliance with local building control. Master Builder standards guide workmanship, documentation, inspections, and professional conduct throughout every construction stage.
Home Extensions
Loft Conversions
Roofing Services
Bathroom Installations
Kitchen Installations
Refurbishments
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At Caws Carpentry & Building Services, we provide professional building support across Winchester and nearby areas. Our team works regularly among the city’s varied streets, from Georgian townhouses near Winchester Cathedral to Victorian terraces tucked behind the High Street, as well as modern Hampshire developments on the outskirts. This local experience shapes how we plan and deliver work. Older properties often demand careful structural consideration, traditional materials, and a clear understanding of conservation expectations. As a locally active House Construction Company, we approach each project with respect for original features while meeting current building standards. Our General Building Services cover structural alterations, Refurbishments, and ongoing property improvements.
We manage projects with clear scheduling, organised workflows, and direct communication. You stay informed throughout, with practical guidance at each stage. For homeowners seeking additional space, Loft Conversion Winchester projects offer a smart solution that fits the character of existing homes. Many Winchester properties lend themselves well to this approach when handled correctly. We work closely with you to deliver reliable building solutions suited to Winchester’s architectural landscape and local expectations.
Southampton
Winchester
Netley
Hedge End
Fareham
Marchwood
Totton
Chandler's Ford
Eastleigh
Hamble-le-Rice
At Caws Carpentry & Building, we understand the importance of choosing the right builder for your project. master builders in Southampton we bring a combination of skill, experience, and dedication to every job, ensuring quality results and a smooth process from start to finish.



We advise planning rules specific to Winchester, including conservation areas and listed buildings. Many Extensions fall under permitted development, but this varies by property. We review your plans early and guide you through applications where approval is required by council officers.
We provide written guarantees covering our workmanship and agreed materials. This applies to projects across Winchester and surrounding areas. Our aftercare process ensures issues are addressed promptly, giving you confidence that completed work performs as intended over time for your household long-term.
Building regulations are managed in full by our team. We coordinate inspections, liaise with local authorities, and maintain compliance throughout the build. Homes in SO23 and SO22 follow strict standards, which we meet through structured workflows and clear documentation and timely reporting.
Timeframes depend on scope, structure, and access. Smaller renovations may take weeks, while larger projects take months. Properties in SO23 or SO22 often need careful sequencing. We provide realistic schedules and regular updates so you can plan with certainty from project outset.
“We decided to convert our attic into a usable space, and the CAWS Carpentry team did an incredible job with the loft conversion! The transformation is amazing, and they made sure everything was exactly how we envisioned. It’s now our favorite room in the house. Truly exceeded our expectations..”
Customer in Fareham, Southampton
“I recently had a renovation project done around the house, and the CAWS Carpentry team, who are expert builders in Southampton, was outstanding. They were reliable, friendly, and the quality of their work was exceptional. I’m so pleased with how everything turned out and would definitely call them again.”
Customer in Winchester
Our bathroom looks amazing after the renovation, thanks to the CAWS Carpentry team! They handled the bathroom installation smoothly from start to finish and paid attention to every little detail. They were punctual, courteous, and we couldn’t be happier with the final result.
Customer in hedge end
"We had our kitchen completely redesigned, and the CAWS Carpentry team, who are top kitchen fitters in Southampton, did an excellent job. They were efficient, friendly, and left the space looking better than we ever imagined. The new layout is perfect, and it’s made cooking and entertaining so much more enjoyable."
Customer in Portswood, Southampton
Explore our gallery to see the quality craftsmanship we bring to every project, from stunning extensions to bespoke kitchen installation
and well designed bathrooms. Let our completed work inspire your next home transformation.



