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Unlock the space above your head
Professional loft conversions across
Northamptonshire — from Velux installs
to full dormer transformations.
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Need more space? Extend, don’t move.
Seamless rear and side
extensions designed
to blend perfectly with your
existing home.
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Kitchens built for real living.
Complete kitchen renovations — structural alterations, knock-throughs, installation and finishing handled by one trusted team.
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Swiss Build is a trusted building company in Northampton, delivering high-quality extensions, renovations, refurbishments, and new builds across Northamptonshire.

With years of experience in residential and commercial construction, we deliver expert craftsmanship and reliable project management from start to finish. As trusted builders in Northampton, we specialise in home extensions, renovations and refurbishments across Northamptonshire, providing clear communication, transparent pricing, and high-quality workmanship on every project.

Thinking about improving rather than moving......

Ready to start your project? Swiss Build provides trusted building services in Northampton with quality you can rely on. Contact us today for a free, no-obligation quote.​
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Our Services

Our Services At Swissbuild, we provide comprehensive building services across Northampton and the surrounding areas, covering all aspects of the building trades for residential properties. From small jobs such as replacing a radiator, plumbing upgrades, and minor repairs, to full home renovations, structural alterations, and large house extensions, we deliver high-quality workmanship on every project. Our experienced team specialises in home improvements, property refurbishments, kitchen and bathroom installations, extensions, and complete building renovations. Whether you’re upgrading a single room or planning a major extension, Swissbuild offers reliable, professional building services tailored to your needs. No project is too small or too large — we are committed to delivering trusted, local building services with exceptional attention to detail, competitive pricing, and outstanding results.

Home Extensions In Northampton

Need more space but don’t want to move? We specialise in home extensions in Northampton...

Loft conversion

Loft Conversions in Northampton

Swiss Build Ltd specialises in loft conversions in Northampton and across Northamptonshire, turning unused attic space into stylish, functional rooms. From bedrooms and home offices to en-suites and playrooms, we handle everything from design to completion, ensuring quality workmanship and a smooth finish.

Kitchen

Kitchen Renovations & Building Work Northampton

We provide complete kitchen renovation services in Northampton, including structural preparation, knock-throughs, extensions, and full building works ready for kitchen installation......

Renovation

Property Renovations & Refurbishments Northampton

Planning an open-plan layout? Removing internal walls? We carry out safe and compliant structural alterations in Northampton, including RSJ supply and installation, and removals,

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Award-Winning Northampton Builders – FMB Approved

At Swiss Build, we are trusted builders in Northampton and Northamptonshire, delivering high-quality construction with a reputation you can rely on. As proud members of the Federation of Master Builders (FMB), we’ve been independently vetted to ensure our workmanship, reliability, and professionalism meet the highest industry standards. If you’re looking for a reliable builder in Northampton, Swiss Build offers proven quality and complete peace of mind. Proven Excellence Across the Regions Our work has been recognised with multiple Federation of Master Builders awards, highlighting our consistent high standards: Eastern Counties Winner – 2019 Eastern Counties Winner – 2021 Central Region Winner – 2023 These awards reflect our commitment to delivering exceptional results on every project across Northamptonshire and surrounding areas. Why Choose Swiss Build? Trusted Northampton builders with proven experience Fully vetted FMB approved building company Multiple award-winning construction projects Reliable, professional service from start to finish High-quality workmanship on every build Whether you need a house extension in Northampton, a full renovation, or a new build project, Swiss Build is the team you can trust.
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Client Testimonials

Our clients love us, here are a few of their quotes.
So pleased with the work completed by Swiss Build. They ripped out an old, very 80s fireplace and created an alcove and hearth for us with mantle. They are a lovely bunch of guys, so helpful and their work is very high standard. We will use them again!
Louise Client
Louise
Swiss Build completed my extension and kitchen not only to the highest standard but within the timescale that they promised. I knew Swiss Build had a good reputation when I booked them to carry out the works in my house but they completely surpassed my expectations. The amazing team consisting of Neil, Simon, Frank, Brad, Quinn and others were absolute experts.....
teresaClient
teresa
wiss Build has designed and built a new garden wall and gateway, linking our driveway with the back garden. They also extensively re landscaped part of the garage including a substantial patio. Electicity in garden was upgraded to include lights, ev cabling, and cabling for a summer house. All work was carried out to the highest specification.
Client
We had a challenging job creating a ramp. Neil and his gang did a fantastic job. Friendly, approachable, clean and tidy and great value. Highly recommended.
MartinClient
Martin

Let Your Dreams Be Reality....

Swiss Build manages your project from start to finish with clear communication, quality materials, and expert workmanship — delivering your extension, renovation, or new build in Northampton on time and to the highest standard.
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