Builders in Southampton You Can Trust
Expert Carpentry Services Southampton
Loft Conversions & Extensions Southampton
30
years
30 years of building and carpentry experience, delivering high standards at competitive prices.
Welcome to Caws Carpentry & Building Services.
trusted, professional, and local.
If you’re looking for a builder you can rely on, Caws Carpentry & Building is here to help.
With over 30 years of experience, we deliver quality workmanship across extensions, loft conversions, kitchens, bathrooms and full home refurbishments.
As trusted builders in Southampton, we provide clear advice, honest pricing, and complete project management from first consultation to final handover.
Call 02380 471052 to discuss your project and request a free, no-obligation quote.
Get in touch with us today at 02380471052
To discuss your project and request a free, no-obligation quote.
End To End Building Services
At Caws Carpentry & Building, we deliver complete building services tailored to each home and client.
From structural works to final finishes, every project is managed with care, communication and attention to detail.
Our team is known across Southampton as reliable builders who deliver quality craftsmanship and practical solutions that add long-term value.
Why Choose Our Master Builders?
At Caws Carpentry & Building, we understand the importance of choosing the right builder for your project. As experienced 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.
Over 30 Years of Experience
Decades of experience across extensions, conversions, renovations and bespoke residential projects.
Accredited Master Builders
We are recognised by leading trade bodies, reflecting our commitment to high professional standards.
Comprehensive Services
From lofts and extensions to kitchens, bathrooms and refurbishments, all services are managed under one roof.
Transparent Pricing
Clear, detailed quotations with no hidden surprises.
Customer First Approach
We focus on communication, reliability and high-quality results that match your goals.Our Comprehensive
Building Services
We provide expert building and renovation services for homeowners across Southampton and surrounding Hampshire areas, making us one of the go-to local builders in Southampton for extensions, conversions, and full home renovations.
Our Process
1
Initial Consultation
We start by understanding your needs. Whether it’s a one-off job or a full project, we discuss your requirements, budget, and timelines.2
Site Survey & Assessment
Our team visits your site to assess existing conditions, check technical details, and identify any potential challenges.3
Proposal & Quotation
Based on the survey, we prepare a detailed proposal with clear scope, timelines, and costs no hidden surprises.4
Planning & Design
For larger projects, we create drawings, layouts, and technical plans to ensure compliance and efficiency.5
Project Execution
Our engineers and technicians carry out the work with safety, quality, and minimal disruption as top priorities.
Quality Check & Handover
Once completed, we test, inspect, and verify everything before handing the project over to you.
Achieve Quality Craftsmanship for Your Project in Southampton
At Caws Carpentry & Building, quality is at the heart of every project.
As experienced house builders in Southampton, our team combines proven building methods with modern solutions to deliver excellent finishes across extensions, refurbishments, kitchens, bathrooms and new build work.
If you’re planning a project, contact us for a free consultation.
Kitchens and Bathrooms
Tailored to You
We specialise in kitchen renovations and bathroom fitting, creating bespoke spaces tailored to your style and needs. Our team works closely with you to create functional and aesthetically pleasing spaces that enhance your home and lifestyle.
We understand that modest kitchens and luxury bathrooms are central to daily living, and we ensure every element, from fittings to finishes, is executed with precision and care to reflect your personal taste.
Transforming Houses
into Homes
Transforming Houses
into Homes
As Accredited Master Builders in Southampton with over 30 years of experience, we deliver meticulously vetted quality on major projects like extensions and conversions.
Our approach goes beyond just structural work—we create homes filled with character, comfort, and lasting value. Every building project we undertake is crafted with care by our skilled local team, ensuring your house becomes the home you’ve always envisioned.
We focus intensely on bringing your unique vision to life, seamlessly combining functionality with intelligent architectural design. We ensure that every detail, from spatial layout to premium finishes, contributes to a warm, energy-efficient, and practical living environment, guaranteeing satisfaction with your investment.
Sustainable and Efficient Practices
We are committed to sustainable practices, using environmentally friendly materials and efficient methods to reduce our environmental impact while delivering quality results. Our team prioritises energy-efficient solutions, waste reduction, and responsible sourcing of materials to ensure that every project not only meets the highest standards of craftsmanship but also contributes to a greener future.
Our Recent Projects
Take a look at some of our recently completed builds across Southampton and the surrounding areas. From striking home extensions to bespoke kitchen installations and beautifully finished bathrooms, every project showcases the quality craftsmanship and attention to detail we bring to each home we work on.
Based in Southampton, Proudly Serving Hampshire
CAWS Carpentry & Building is a local, family-run builder based at 47 Holly Gardens, SO30 3RU in West End, Southampton. For over 30 years we’ve delivered extensions, loft conversions, kitchens, bathrooms, roofing and full home refurbishments for homeowners across Southampton and south Hampshire. Our team lives locally, so we’re never far from your project.
Across Southampton. We work throughout the city and its suburbs, including Bitterne, West End, Portswood, Shirley, Bassett, Highfield, Sholing and Woolston. Southampton’s housing is wonderfully varied, from Victorian and Edwardian terraces to 1930s semis, post-war homes and modern estates. Each brings its own challenges, such as solid walls and timber floors in older properties or tight access and parking on terraced streets, and we plan around them from the first site survey so there are no surprises once work starts.
Eastleigh, Hedge End and Chandler’s Ford. Minutes from our West End base, we cover Eastleigh, Hedge End, Chandler’s Ford, Fair Oak and Botley. These are popular areas for families who would rather add space than move, whether through a house extension or a loft conversion.
Winchester and the surrounding villages. To the north and east we work in Winchester, Twyford, Sparsholt, Alresford, Bishop’s Waltham, Swanmore, Durley, Wickham and Denmead. Many homes here are period or character properties, some within conservation areas, where matching materials and sympathetic detailing matter as much as the build itself.
Totton, Romsey and the New Forest. West of the city we cover Totton, Marchwood, Romsey and the New Forest. If your home sits inside the New Forest National Park, planning applications go to the National Park Authority rather than the district council, and we can talk you through what that means before designs are finalised.
Local planning and Building Regulations. Depending on your address, your project will fall under Southampton City Council, Eastleigh Borough Council, Winchester City Council, Test Valley Borough Council, New Forest District Council or the New Forest National Park Authority. We’ll advise whether your plans are likely to fall under permitted development or need full planning permission, and we work with Building Control to make sure everything is signed off on completion.
Not sure if we cover your area? If you’re anywhere in south Hampshire, give us a call on 023 8047 1052 for a free, no-obligation quote.
FAQ’S
How much does a house extension cost when using Builders in Southampton?
As Southampton Builders, we know project cost is the first question. Every extension is unique, so the final price depends on crucial factors like size, materials (e.g., bespoke glazing vs. standard windows), and overall design complexity.
To give you an exact, reliable figure, we provide clear, detailed, and itemized quotations after a site survey. This ensures you fully understand your investment before any construction work begins. Contact us today for a free, no-obligation consultation.
Do you provide free consultations before starting a project?
Yes, we offer an initial consultation at no charge. During this stage, we take the time to learn about your ideas, discuss practical design options, and outline a clear plan before moving forward.
How do I hire an experienced builder for my project?
Start by checking credentials such as FMB membership, Checkatrade reviews, and insurance, then ask for a written, itemised quote after a free site visit. As an experienced, family-run team of builders, we’re happy to talk through your project, timeline, and budget before any work begins, with no obligation.
Are you a member of the Federation of Master Builders (FMB)?
Yes, we are fully vetted members of the Federation of Master Builders (FMB), which means our work has been independently inspected to meet the highest industry standards.
Is CAWS Carpentry & Building fully insured and accredited?
Absolutely. Our team holds full insurance and the necessary trade accreditations. As a result, clients enjoy complete peace of mind, knowing their project is in safe hands from start to finish.
Do you offer carpentry and building services across Hampshire?
Yes, we cover the entire county, from small towns to larger city projects. In addition, we’re well regarded as one of the trusted local builders in Southampton, known for delivering high-quality property improvements.
Can you manage decorating as part of my project?
Yes. We provide complete project management, including decorating. If your project needs services such as wallpaper fitting or painting, we coordinate trusted local specialists to deliver a high-quality finish.
How much do builders in Southampton charge per day or per project?
Builders companies in Southampton typically charge £150 to £300 per day, based on experience and project scope. For fixed-price projects, small jobs start from £500, while extensions or loft conversions range from £20,000 to £60,000+. Prices vary by project size, materials, and builder expertise.
Choosing an experienced building and carpentry team makes a real difference to how smoothly a project runs and how long the results last. At Caws Carpentry & Building, our long-established local craftsmen serve homes across Southampton and the wider Hampshire area, handling everything from extensions and loft conversions to kitchen and bathroom fitting with careful workmanship at every stage.
According to the Federation of Master Builders, homeowners are advised to choose established tradespeople with a proven track record rather than the cheapest quote — and with over 30 years of hands-on experience, our team offers exactly that reassurance.
Because each job is planned and completed by skilled people who know the local area well, you enjoy fewer surprises, dependable timelines and finishes made to stand the test of time. It’s a practical, honest approach that turns an everyday house into a home you can be proud of.