A family-run business est. over 25 years
Give us a call: 01206 577591

Garage Conversions & Annexes

A seamless service from Colchester’s experienced garage conversion specialists.

Work with Lexden, and you’re guaranteed beautiful, practical results from a highly experienced team.

We’ve been adding significant value to homes in Essex for more than 30 years, simply by refurbishing and repurposing space that’s already available. Our skilled staff can turn your tired, unused garage or plot of land into anything you require, whether that be a new bedroom, a home office, a playroom for the kids, or an extended kitchen or bathroom.

Our garage conversions and annexes are built to current Building Control Regulations to ensure all structures are fully compliant and signed off to the highest possible standards.

Bespoke conversions

In-house tradespeople

Highly trained staff

Fully insured

Exceptional craftsmanship

Competitive quotes

KIND WORDS - See what our customers have to say about our service

Read our testimonials

Why invest in a garage conversion?

Make the most of your unused space

Very few of us store our cars in our garages. But by filling these spaces full of junk, we’re writing off on a significant amount of space that could be put to better use. A garage conversion enables you to add a brand new room to your home, without having to move!

Easily connect existing services

The great thing about converting a garage is, the shell of the building is already there, and it’s within easy reach of your utilities, including your water, electric and gas supplies. This means garage conversions are usually much more cost-effective compared to full home extensions.

It’s a fast and easy way to enhance your property

Most of the time, garage conversions can be completed without gaining planning permission from your town’s authority. This means work can start almost immediately, with no complicated paperwork or long waits for decisions from the local council.

Standard specs included within our conversion packages

Your conversion or annexe will, of course, be designed and built to meet your precise requirements. From adding extra light switches to fitting full kitchens, bathrooms and en suites, we can design a space with everything you need to live comfortably, happily and much more efficiently.

For your peace of mind, all electrical installations are carried out by our registered part P contractors. Our conversions and annexes are also professionally finished by our expert painters and decorators.


Here’s an example of the fittings and fixtures that might be included at the interior second fix stage:

  • 4 double plug sockets
  • 1 light switch
  • 6 LED down lights
  • 1 pendant light
  • 1 uPVC window to your design, with trickle vents approximate size 1350mm x 1200mm
  • 1 window board
  • 1 single convector radiator, approximate size 1400mm x 450mm or Haverland electric oil-filled radiator
  • Skirting and architrave

Electrical Work

Our electrical services include rewires, extension/conversion rewires, heating rewires, consumer unit upgrades, and inspections and testing. Safety certificates can be supplied.

Gas Installs

Our Gas Safe registered engineers have been checked to make sure they qualified to safely fit cookers, fires, boilers and other gas appliances. Safety certificates can be supplied.


Installation, repair and maintenance works undertaken on your central heating (including underfloor heating), boilers, gas meters, and water mains systems.


A professional, reliable service from our bespoke carpentry division, which covers the design and fitting of windows, doors, skirtings, staircases, flooring and decking.


Includes all jobs and techniques, from skimming over existing structures to sand/cement rendering, plasterboard repairs, coving, screeding, taping and jointing.


Let us handle all your interior and exterior decorating, which includes paint stripping, wallpapering, masonry painting, woodwork staining and varnishing.


We’ll manage everything from site clearances to laying foundations, installing drainage, carrying out bulk excavations and arranging the construction of block beams.


Let us calculate steel costs, create bespoke designs and handle the shipping and installation of your steel beams and other associated structural works.

What our clients say...

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    Lexden Builders came recommended from a family friend and we have been extremely pleased with not just the end result but the quality of service and personal touches from the team.

    Over the course of the five month build the Lexden Builders team were fantastic, no request was to much and we really appreciated the time they put into explaining minor details and how polite and helpful every one was.

    Hugely considerate given that we have a young family to ensure that we were kept with a living space downstairs. We now have a fantastic new living space prime for spending time with family and friends. A huge thank you to Steve and the team.

    Matt - Extension & Renovation – Location: Straight Road, Colchester, Essex
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    This was our second project with Lexden Builders so we were confident from the outset that everything would run as smoothly as possible and we were not disappointed. The project this time was much larger but despite there being lots of challenges with materials being obtained (national shortages etc) we were hardly aware of the impact. Steve kept us informed the whole way through and answered any questions we had very promptly. The whole team-John, Jim and James could not have been better and in spite of the upheaval, which was inevitable due to the task being undertaken, they made everything so much easier. They were so helpful, hardworking and professional.

    To say we are delighted with the finished product is an understatement. We had a vision of what we wanted but our expectations have been surpassed. We will be using Lexden Builders again and will always recommend them to anyone who wants the stress taken away, a professional job undertaken, to be kept fully informed the whole way through. Thank you Steve, John, Jim and James, we are over the moon.

    Ian & Kathy - Single Storey Extension – Location: Bramley Close, Colchester, Essex
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    It is hard to put into words just how pleased we are with our final result. From the initial consultation with Steve Friend the owner who project manages the scheme and working with his architect we were able to create an outline of what I had been thinking about for months. Then along came Jim, John and James (the three J’s) who made the outline a reality! No small detail was ignored, and from start to finish they all exhibited such a high level of professionalism and consideration for our home. Unfortunately for them we were in lockdown and they had to cope with a one year old, a five year old, a ball crazy dog and myself and my husband.

    I could not find any fault. They did everything in their power to ensure we had appliances for the duration of the work and I appreciate at times this must have been inconvenient for them- but they never let us know. No small detail was overlooked with many suggestions being spot on to achieve a flawless finish.

    I wish I could list all of the individuals who effectively became part of our family for the build but I am sure when you make the decision to hire Steve Friend of Lexden Builders and his team you will get to meet them all! Thank you to all of you.

    Becky, Rob & family - Single Storey Extension, Structural Alterations & New Fitted Kitchen – Location: Colchester, Essex
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    I have engaged Lexden Builders a few times now, firstly for a garage conversion and then subsequently for a rebuild of two bathrooms. On every occasion, the work is carried out in such a professional manner. The team are really friendly, and Steve drops in on occasion to check on how the work is progressing. Steve comes round to the house to review what is needed, agrees an amount for the work and then provides dates. I have never known a job to move from the original date; it starts and finishes on time every time. When the work is carried out, everything is kept tidy and a clean-up is completed at the end of each day. They have regular suppliers that they use, provide brochures, set up appointments to go and select the items you want and then they take care of the rest. Some builders I have used in the past, the pricing changes as the job progresses, but with Lexden Builders the pricing is very transparent and rarely moves, only if you upgrade what you are asking for and even then you get options to choose from. At the end of the job, they walk you round to check that you are happy with everything too. To date I have never found a snag post completion of the job.

    I have and will continue to recommend them to anyone looking for work to be completed. My neighbours seem to be booking them for work too as they can see great results. If you are looking for a builder that is reasonably priced but complete everything to a really high standard, on time and takes care of everything, this is the builder for you.

    Mr & Mrs Bryant - Garage Conversion, Downstairs Toilet & Upstairs Bathroom – Location: Highwoods, Colchester, Essex
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    From the first day we contacted Lexden Builders, it was clear how easy it was going to be to work with them and what an excellent outcome we would have. Their level of attention to detail was evident in the planning and at all stages of the work.

    When the work was complete, it was truly complete, with care taken to ensure aspects outside of the original scope were also left in the best condition possible. They were always tidy, polite, hardworking, perfectionists! and a delight to have working around the home.

    We now have a beautiful garage conversion and outdoor areas. They managed the entire project, making all the additional aspects like flooring, decorating, kitchen, bathroom really simple to organise.

    We have already, and will continue to highly recommend Lexden Builders. Thank you!

    Steph - Double Garage Conversion to a One Bedroom Annexe – Location: Lexden, Colchester, Essex
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Call us now for a no-obligation quotation

Reach out to our team for professional advice and free, no-obligation estimates.

Tel: 01206 577591 or Mobile: 07990 836008