Great job! 1st Builders Cambridge were on time and on budget – extremely friendly and professional. I am very happy with my extension! Alexander Cornwell

House extension in Sawston, Cambridge

The experience we had was truly amazing. We were worried because we had heard horror stories of home renovations; however, the standard of 1st Builders Cambridge’s work was beyond our expectation and the service was incredible.

Throughout the project, Mark the surveyor was there for all our requests and we now have a beautiful home extension!

Jenny Walters

Kitchen renovation in Cambridge

We are both delighted with the new extension to our home. 1st Builders Cambridge were recommended to us by some friends who had used them last year. We would happily recommend them to anyone.

House extension in Girton, Cambridgeshire

Mr & Mrs Krawitz

House extension in Girton, Cambridgeshire

At 1st Builders Cambridge, we specialise in house extensions, garage conversions, groundworks and renovating and installing bathrooms and kitchens. However, we offer a service for every type of building work:

Carpentry • Brick laying • Groundworks • Block work and Masonry • Electrical and Wiring • Plastering • Plumbing • Rendering • Renovations • Insulation • Soundproofing • Loft conversions • Flooring • Walls • Double Glazing • Conservatories • Orangeries • Structural Repairs • Groundworks • Landscaping • Garden and Office Buildings • Tree Houses • Wall and Floor Tiling • Boilers and Heating • Insurance Work • Damp Proofing

Carpentry is at the heart of any good building company. Whether it’s first fix, roofing, installing cupboards, hanging doors or fitting kitchens and bathrooms, our expert joiners are involved with almost every job 1st Builder Cambridge are asked to do.

Conservatories and Orangeries
We have undertaken many conservatory and orangery projects and professionally manage each project from start to finish. We can lay conservatory foundations, floors, walls, tiling and also install all glazing timber or uPVC window frames.

1st Builders Cambridge have a team of experienced, professional bricklayers who are able to take on any job, large or small, from house extensions to garden and boundary walls, offering all the usual bonds, as well as drystone and flint walling. We have swatches, samples and catalogues for every large brick supplier in the UK.

Electrical and Wiring
1st Builders Cambridge have a team of qualified technicians who can install all electric works accompanying our extensions and building work. We also do full house re-wirings, upgrades and simple jobs, such as moving plugs or installing extra lighting.

Plastering and Rendering
At 1st Builders Cambridge, we know that good plastering is a vital part of any building job. Our plastering team are experts at internal and external plastering, tanking, damp proof rendering, partition walls, dry lining and overboarding. We can provide various render finishes and even do detailed fine work on coving and cornices.


A renovation is the ideal way to modernise a home, while adding substantial value to the price of the property. If your house is outdated or you simply want to create one large living space from two smaller rooms, 1st Builders Cambridge can renovate any part of your house, whether as part of a large extension or a single room.

Rising heating bills and recent government legislation on carbon-efficiency mean it has never been a more important time to insulate your home properly. 1st Builders Cambridge can provide all wall, floor and roof insulation, loft insulation, window and door draught-proofing, hot water pipe and tank insulation.

Whether you live in an old, terraced house with thin walls and noisy neighbours, or you want to stop noise escaping from your garage while your band practices, 1st Builders Cambridge can provide and install a variety of advanced soundproofing materials to any room or building.

Loft Conversions
Loft conversions are a great way to unlock a huge amount of unused space in the house, making a huge difference to a living environment. Loft conversions can be complicated, but our team of experts at 1st Builders Cambridge work closely with local architects and structural engineers to take care of every aspect of the job for you. If needed, we can simply install loft ladders and board your loft floor.

We believe that a new floor in a kitchen, bathroom or other reception room can make a huge difference to the overall aesthetics of a house.1st Builders Cambridge are happy to consult on different floor styles and materials that will compliment its surroundings. We can provide everything from soft to hardwood, natural or treated timber, laminated polymer timber, acrylic or composite flooring.

Floor and Wall Tiling
1st Builders Cambridge can install any type of tiling on any floor or wall. We stock a huge range of tiles, including porcelain, ceramic, encaustic, glass, glazed, decorated, stone, terracotta, slate and Travertine for anything from wet-rooms to kitchens.

Plumbing and Heating
Whether replacing an entire plumbing and heating system in a building, updating existing systems, or adding luxurious underfloor heating to an extension, 1st Builders Cambridge can provide a high-quality service by our professional plumbing and heating installation team.

Double Glazing
Our expert team at 1st Builders Cambridge can help choose, advise and install timber windows, sash windows and uPVC to either match existing double glazed units, replace a whole house or to install on a new extension.

Structural Repair
1st Builders Cambridge can undertake all areas of structural repairs; we can strengthen buildings with steel, remove load-bearing walls during a renovation or support ceilings during a loft conversion. We work closely with local structural engineers to guarantee all work is carried out safely.

Garden and Office Buildings
When it is not possible to extend a house, a building in the garden provides the perfect solution. We can build simple structures or add all the services you would expect to find in a home, to create home offices, guest accommodation or a just quiet space away from the kids.

Insurance Work
1st Builders Cambridge are approved for work by a number of insurance companies. If you have had damage caused by a flood, subsidence, an accident, a spill or tree roots, we can liaise with an insurance company’s loss adjuster or appointed architect.

Damp Proofing
One of the most common problems with old buildings is damp. Damp proofing is a method of moisture control applied by our team of experts to a building’s walls or floors using membranes or chemicals to prevent moisture from entering the interior spaces.

Our work speaks for itself

Contact us now

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