Extension Builders in Cambridge

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (3 reviews)

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Some of our top rated extension builders in Cambridge

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Rizer Developments
Rating: 5 out of 5
Extension Builder in Cambridge
My buisness undertakes all types of building work ranging from complete new builds, extensions to smaller jobs like garden walls. I have been a builder for 25 years gaining city and guilds in bricklaying in 1991 and have covered everything from house building to high end shop fitting, also installing bathrooms we are approved installers for direct bathrooms.
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Latest review:
Extensions- 29 Jul 2020
Paul at Rizer Developments was the first company to reply to my request for a builder. Paul was very quick to give us a very competitive quote and was happy to finish off the part built extension to the front of our property after a poor performance by another builder who was discharged. Rizer Developments started the kitchen extension in February as they said they would, we then had a global pandemic and shut down, not a good time to start any building project! Paul and his men somehow managed to get hold of the materials when they could. Throughout the project Paul and his men were very respectful of us still living in the house. Paul was always available if there was any questions we needed to be answered and also kept us informed throughout the build. The standard of their workmanship is a major credit to him and his workforce. We will have no problems ever asking Rizer Developments to come and do any future projects. Rizer Developments are 100% trustworthy which is so nice to see and can still exist in our modern day world. Many thanks for all you have done to make our house now a home. Peter and Carol Lewis.
KMTG Limited
Rating: 5 out of 5
Extension Builder in Cambridge
Hi
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Latest review:
We’ve asked Kamil to do several projects over the years—both big and small—and we’ve always been extremely happy with the results. He’s a true perfectionist: hardworking, reliable, trustworthy, and clearly very experienced. One of the standout jobs was a large wooden gazebo he built to cover a children’s play area—it was done to an exceptional standard, and we still get compliments on it. We wouldn’t hesitate to recommend Kamil to anyone looking for high-quality, dependable building work.
Brownstone Building Services Ltd
Rating: 5 out of 5
Extension Builder in Cambridge
We are a construction company covering Hertfordshire and surrounding areas. We take on both private and commercial contracts. We are members of The Federation of Master Builders and Trustmark. We pride ourselves on our high standard of workmanship and customer service.
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Latest review:
Extensions- 4 Sep 2018
Chris and his team did a good job with the extension and we are happy with the completed room. Positives: The room was finished to a good standard. Chris was very approachable and happy to answer questions. He was willing to make adjustments to things we were not happy with. Good and competitive price. Negatives: Finished well over schedule agreed. Frustrating on day's when no one turns up and you do not know why. Some of the completed work needed to be modified / altered (Chris was happy to do this for no extra cost).
Carter Developments
Rating: 5 out of 5
Extension Builder in Cambridge
Carter developments undertakes all aspects of construction, from inception to completion. All skilled tradesmen under one roof. Communication is key for us at Carter developments as we know how important regular updates are to our clients. We pride ourselves not only on the high quality of our work but the care taken during the project to ensure everything is completed to the clients specification and to the highest of standards. We are also 100% transparent, no hidden costs. We are upfront and honestly from the start.
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Latest review:
Extensions- 16 Oct 2023
Great service from groundwork right through to decorating and finishing touches. Good communication all the way through with all trades being very respectful of neighbours and surroundings. A specific mention on the care of the request made for tiling of Shower room, an awkward task but with exemplary finish. Would highly recommend and definitely use again. Thanks to Billy and his team.
C B Building Services
Rating: 5 out of 5
Extension Builder in Cambridge
CB Building Services specialise in home extensions of all sizes, offering project management from start to finish. Each trade is fully qualified with a wealth of experience and understand the importance of a safe working environment. CB Building Services are part of the highly acclaimed 'federation of master builders' who also fully insure us for your piece of mind.
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Latest review:
Extensions- 7 Jan 2020
We have engaged Charlie through myBuilder and he was very prompt with his feedback. His engagement was effective and he gave us the time and attention as we went through the selection process with a few candidates. Once we made up our mind he was quick again to come up with the final quote and accommodated our final changes (of which there where a few). I think it is important to highlight that on a project like this one it is a good idea for the client to have a clarity of the scope and specification to the detailed level - it helps the builder with the scope and the quote. Through the project Charlie was effective in sticking to his timelines and was very proactive in lining up the other trade (although it was not an easy task at times). We have had our hiccups and challenges when things did not go to plan, but those where resolved in a very professional manner with mutual respect, understanding and attention from Charlie for which I m grateful. Overall we are pleased with the work delivered and many of our friends are still amazed at the speed of our project delivery. Will be happy to endorse Charlie or provide any more detailed feedback if required.
D Thomson Construction & Landscapes
Rating: 5 out of 5
Extension Builder in Cambridge
Hi I'm Darren I have been in the construction trade for 23 years, been working for myself now for 4 years. Check my Facebook page D Thomson construction and landscapesI am qualified bricklayer of 15+ years now . We handle every part of the job not just bricklaying .From digging footings to a plastered painted finish .New builds to extensions to renovations. We also complete all exterior work as in drives patio fences , I run the job from start to finish communicating with the appropriate sector to relieve you as a customer of the stress of dealing with multiple trades. With attention to detail and great pride in all work we do, We look forward to working on your next project and bring your ideas to reality.
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Latest review:
Plastering- 25 Dec 2025
Brilliant
Eve Construction Cambridge LTD
No reviews yet
Extension Builder in Cambridge
Extensions, Referb's,
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Twigden and Moss Ltd
No reviews yet
Extension Builder in Cambridge
Twigden and Moss Ltd is a Cambridgeshire based family-run building contractor specialising in domestic construction and refurbishment projects. Established in 2008, the company provides a comprehensive range of construction services including extensions, renovations, conversions, painting and decorating. Official members of the Federation of Master Builders. Registered members of Trust Mark, the only Government Endorsed Quality scheme. Twigden and Moss Ltd delivers high-quality workmanship across both private and commercial sectors.
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BBA Developments Ltd
Rating: 5 out of 5
Extension Builder in Cambridge
We believe in transparent communication, quality workmanship, and a commitment to delivering projects on time and within budget. Our unwavering dedication to these principles has earned us a reputation as a reliable and trustworthy construction partner.
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Latest review:
Conversions - General- 4 Jun 2024
I've been dealing with builders for the last 2.5 years and saw everything, I met so many dodgy people out there who say they know how to do things and eventually screw it up and disappear, that I lost trust in this industry, once I started to work with BBA Developments Ltd I noticed the difference straight away. Adam was professional and kind and explained everything to me. once BBA Developments Ltd began to work, I immediately noticed the difference: everything was done in a top professional way and everything was on time as promised and done to my satisfaction. There were no surprises during the project, there was a very kind contact who was always available to answer my questions quickly. I would recommend hiring BBA Developments Ltd without blinking.
Kelliher Renovations Ltd
Rating: 5 out of 5
Extension Builder in Cambridge
Refresh are a design and build home renovation specialist. We have a team of architect's, builders, plumbers, electricians, plasterers, decorators, carpenters etc. We do everything from new bathrooms all the way up to extensions and loft conversions. Refresh have been in business for 6 years but have recently opened an office in the Cambridge area.
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Latest review:
Large job, internal building work (altering wall positions) and redesigning/refurbishing of two bathrooms in very old cottage. Well planned, managed and delivered. High quality and beautiful finish, work delivered to cost and scope (very slightly delayed due to additional reinforcements required to floors). Very pleased and would recommend.
JS Plastering & Carpentry
Rating: 5 out of 5
Extension Builder in Cambridge
We at JS Plastering Contractors pride ourselves on producing the highest quality work possible. Our attention to detail and quality workmanship, and of course customer care are our top priority. We provide detailed, free no obligation quotes for all work. We are based in Royston, Hertfordshire but are happy to travel up to a 45 mile radius for work.
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Latest review:
Plastering- 1 Jan 2021
I recommend James 110%. Excellent results, very professional, knowledgeable, courteous, kept the work site very tidy (during the day and end of the day), great communications, hard worker. I will have some more plastering jobs to be done in the future - he will be the first person I will call.
Kysen Projects
Rating: 5 out of 5
Extension Builder in Cambridge
With 30 years experience both locally and Internationally, Kysen Projects will ensure that the works are carried out seamlessly and professionally. All works undertaken under one umbrella without the hassle of dealing with multiple contractors. We specialise in : Bespoke joinery, media units/wall units, Carpentry, wardrobes, Kitchen and Bathroom design and fitment.
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Latest review:
Joinery & Cabinet Making- 4 Sep 2020
Jason did a great job of our fitted wardrobe, very satisfied
SMG carpentry and construction
Rating: 4.8 out of 5
Extension Builder in Cambridge
We are an experienced company with over 40 years experience. We undertake renovations, carpentry work, outbuildings and extensions. We stand for our amazing customer service great quality of work as you can see from the pictures and competitive prices. Followed up with a friendly team.
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Latest review:
Carpentry- 18 Dec 2024
Top workmanship and cleaned up well, would highly recommend Sam , nice fella
SGR (Cambs) Ltd
Rating: 5 out of 5
Extension Builder in Cambridge
SGR specialise in all aspects general building and landscaping, we are a small dedicated company that thrives on delivering quality work to our clients requirements, we carry out the following works; Groundwork’s New Builds Extensions Refurbishments Garage conversions Drives and patio (Hard landscaping) Soft Landscaping
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Latest review:
Extensions- 30 Aug 2021
Steve at SGR Cambs is a pleasure to deal with. A very good eye for detail and a quality project delivered. All the trades are managed extremely well by Steve and nothing is too much trouble when requests are made. Just looking to start the final phase of works for timing and final price, so hope that this can be started shortly and completed in early 2022.
Jarvis developers ltd
Rating: 5 out of 5
Extension Builder in Cambridge
An established building company with a wealth of building knowledge. As an excellent builder and member of the federation of master builders we can help our clients navigate the whole design and build process. Building a new house, converting a property, and extending a property we can make that happen . If you need help submitting a planning application we can also help you with that along with your initial design ideas and turning those ideas into working building regulations drawings.
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Latest review:
From start to finish, Paul and the team were superb; we are so happy with the finished product and the workmanship is brilliant. In particular, Paul was always available on the phone and the communication throughout the build was great. The guys on site were always polite and tided up everyday which was good as we have small children. We would thoroughly recommend Paul and his services again
Vasilebvp
Rating: 5 out of 5
Extension Builder in Cambridge
I am a builder, also I have a lot of practical experience in doing handyman jobs around the house: -plumbing and carpentry -assembling and disassembling furniture - curtain poles - blinds - mirrors and pictures - installing dishwashers/ washing machines/ water filters - painting - building sheds from 0 Etc.
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Latest review:
Handyman- 8 Jan 2026
Vasile provided a quote quickly and completed the job in good time. Recommended.

Top rated Extension Builders

Our Extension Builders in Cambridge, are rated 5 out of 5 based on 3 reviews from customers like you.

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What types of services are offered by local extension builders in Cambridge?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Cambridge for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Cambridge who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Cambridge extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Cambridge?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Cambridge will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Cambridge extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Cambridge home extension project is likely to cost.

Find extension builders in Cambridge with MyBuilder

Hiring the right extension builder in Cambridge with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Cambridge extension builders. Once your job is live, we’ll share it with home extension builders in Cambridge who can express their interest.

Step 2: Compare different extension builders in Cambridge

When you start receiving interest, review profiles of local Cambridge extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Cambridge extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Cambridge, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Cambridge extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Cambridge extension builder before hiring?

Before hiring an extension builder in Cambridge or extension building company in Cambridge, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Cambridge?

An extension builder in Cambridge should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Cambridge extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Cambridge?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Cambridge extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Cambridge extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Cambridge

Can an extension builder in Cambridge help with planning permission?

Yes, many extension builders in Cambridge can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Cambridge handle everything from design to construction?

Many Cambridge extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Cambridge help with materials and finishes?

Yes, most extension builders in Cambridge can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.