Extension Builders in Northampton

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (4 reviews)

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Some of our top rated extension builders in Northampton

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A1HOME4U LTD
Rating: 5 out of 5
Extension Builder in Northampton
Any structural jobs, extentions , driveways/patio, roof, guttering, plumbing, carpentary, tiling, etc
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Latest review:
Extensions- 4 Feb 2023
Tamara has a world of knowledge when it comes to construction. She did a 5 ft extension of our kitchen. She made recommendations that later came out really well. I would not hesitate to recommend her to anyone!
GB Framing & Building services
Rating: 5 out of 5
Extension Builder in Northampton
A team of 3/4 multi skilled guys specialising in carpentry and plumbing and Bathroom/Kitchen installations with over 20 years experience. all aspects of carpentry and plumbing works undertaken, Gas safe engineers and unvented qualified. If your looking for a unique and personal service then look no further.
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Latest review:
Tiling- 15 Jun 2020
Gavin was great, very calm and relaxed. Just comes in and gets on with the job. His singing while he works is hilarious and he did a great job of tiling my bathroom. Would definitely recommend!
Humble construction midlands ltd
Rating: 5 out of 5
Extension Builder in Northampton
Hi, I'm your go-to helper for anything related to builder construction work 🏗️. Need a hand with queries, quotes, or just want some advice? I'm here to help.
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Latest review:
Plumbing- 17 Mar 2026
I hired this handyman to install a new washing machine and fit several kitchen doors, and the results are absolutely flawless. The washing machine was set up quickly with no leaks or leveling issues, but the real highlight was the precision shown in aligning the kitchen doors—they are perfectly straight and have completely refreshed the look of the room. He arrived right on time, worked incredibly efficiently, and offered very fair pricing for such high-quality work. It is rare to find someone so versatile and detail-oriented, and I will definitely be booking him again for future home improvements.
CRH Building
New on MyBuilder
Extension Builder in Northampton
I served 10 years with a local company before starting by myself 2 years ago. I am especially knowledgable in lime and heritage works including Lime repointing. However have extensive experience in —Brickwork (NVQ level 2) Stonework Extensions Patios General carpentry
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LT MAINTENANCE LTD
Rating: 4.8 out of 5
Extension Builder in Northampton
Limited company based in Leicester with 12 years of experience in building work We undertake work for all type of building work as double and single extension,loft conversion and fully refurbished property,bathrooms and kitchens and all types of plastering. We are very reliable and very friendly. We provide services like: Single and double extension Fully refurbished property Roofing Brick work Lintels Garage conversion Plastering Tiling Kitchen fitting Bathroom
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Latest review:
Extensions- 19 Apr 2023
Lucian and his team are absolutely amazing nothing is ever a trouble for them we had no issues in terms of work schedule, quality of work and never had to chase them regarding anything. They took care of little things such as ensuring finishing is to great standard and making sure property was always left secured and clean at the end of every day. I have already agreed for Lucian to help me with landscaping my Garden. I would be comfortable to recommend him to friends and family and would say he is honest, fair and reasonable builder which is very rare specially in and around Leicester. Keep up the good work Lucian and all the very best.
Regener8 Property Services Limited
No reviews yet
Extension Builder in Northampton
Hi, At Regener8 Property Services, we are dedicated to providing top-tier property solutions that not only meet but exceed your expectations. Our commitment to excellence is unwavering, and we specialize in a wide range of services aimed at rejuvenating and enhancing your living spaces. *kitchen installations *bathroom fittings *carpentry *painting and decorating *flooring We look forward to helping you get the best for you. Team Regener8
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jason platt
Rating: 5 out of 5
Extension Builder in Northampton
We specialise in all aspects of building works, including extension, plumbing and carpentry, we do all other aspects of home improvements. We also have access to other trade likes plasterers and electricians that we work closely with. If needed we can run the process of the job from start to finish.
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Latest review:
Bathroom Fitting- 14 Nov 2018
Jason and Steve did a fantastic job. Jason ensured that I knew what they were doing each day and, when decisions needed to be made, we had a quick chat to make sure we were all on the same page. The work was completed to a high standard and any niggles/snags were dealt with quickly and without fuss. Both of them are polite, respectful and just really nice guys. I would definitely recommend them. In fact, I've already booked them to fit my new kitchen next year.
Proper Builders
Rating: 5 out of 5
Extension Builder in Northampton
Proper builders! We are here to help your dreams come true. If you need home improvement, refurbishment, tiny repairs or even just an advice do not hesitate to contact us. We are a family company, professional and trustworthy. We always do our best to make our clients happy. Kitchen, bathroom, bedroom makeovers - that’s all we do every single day. We offer great service in competitive prices, innovative solutions and advices on every stage of the project.
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Latest review:
Restoration & Refurbishment- 20 Sep 2021
Proper Builders are proper builders! Pawel and his team went above and beyond our expectations when we tasked them with an upstairs bathroom conversion and utility room build. Having their expertise and vast knowledge was a godsend when it came to dealing with the aspects of our wonky Victorian house and our no-so-accurate measuring. It was also massively valuable to have their suggestions and ideas for certain aspects of our project which we overlooked. We are very happy with the end result - the team take great pride in their work and it shows. You can definitely entrust Proper Builders to undertake your plans - reliable, trustworthy, tidy and informative from start to finish. Although I advise to get in touch quick as it seems that my neighbours have been that impressed by their work half of my street is now enquiring with them!
JLE Carpenters
Rating: 5 out of 5
Extension Builder in Northampton
Carpentery company based in St Neots covering the uk. We cover all aspects of carpentry from roofing to door hanging and even fencing. We offer guaranteed quality and professionalism on all of our jobs. No job too big or small💪
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Latest review:
Carpentry- 31 Aug 2025
JLE carpenter come round to fit an interior door. Jonny arrived on time, was professional, clean, and tidy throughout the job. His rates were fair — I’d say middle of the road — and the quality of his work was excellent. I’m very happy with the result and would happily recommend him.
Lighthouse Crew Limited
Rating: 5 out of 5
Extension Builder in Northampton
We are new business on the market although we are in construction for over 20 years. We are bringing experience from projects that we were working on throughout many years of service for commercial, domestic and insurance clients. We are offering kitchen and bathroom installation, hard floor fitting, refurbishments, complete remodeling, masonry repairs and structural repairs.We are aiming at complete refurbishments, extensions and conversions, including underpinning and structural strengthening.
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Latest review:
Joinery & Cabinet Making- 28 Oct 2022
Rafal was very helpful, and came up with alternative solutions to the job too from what I'd first suggested. He was prompt, cleaned up each day, and did a really good job which I'm very happy with. It was slightly worrying not to get a confirmed price for the work beforehand, just an estimate, but it turned out that was because it was hard to tell the time the job would take, and in the end what he did charge produced a really good result. I'd highly recommend him.
Shaun blythe
Rating: 5 out of 5
Extension Builder in Northampton
Osmium property services is a multi-disciplined team of professional tradesmen. We have successfully completed projects that have truly transformed our customer’s homes into spaces that they can now enjoy living in. We provide sufficient knowledge to customers ensuring you know exactly what is needed for a job, as well as suggestions on improvements and other respectable tradesmen needed for the jobs. We offer free quotes with 100% A* work.
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Latest review:
Plastering- 3 Sep 2021
Excellent plastering and painting job done by Shaun . My living room looks all new again . He took out the fireplace all nicely and did a great plastering job . All this done at very reasonable price . He went a extra mile to install my TV as well . Based on plastering work , he also mentioned he could do the box work for garage and he did excellent job there as well . Will definitely recommend Shaun for interior works and will definitely call for any future works .
Darren Coote Builders
Rating: 5 out of 5
Extension Builder in Northampton
I have worked in construction for 30 years. I am a reliable, conscientious, trustworthy and happy person. I have City & Guilds in Brickwork, of which I did my apprenticeship. I specialise in driveways, patios, extensions, brickwork, new builds and much more. I only do 1 job at a time from start to finish. Thank you.
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Latest review:
Extensions- 24 Apr 2019
Darren was on site every day without fail. His work was 1st class. He knows his job and is very experienced. He was able to give us a start and finish date and he kept to those dates. He cleared and cleaned the site every day. He was an absolute joy to be around and went the extra mile to ensure we were pleased with his work. I would not hesitate to recommend him. His brickwork is a pleasure to look at and both the extensions he built - a rear extension with bi-fold doors, and a side extension (the garage) both look as if they've always been there. Craftsmanship at its best. He knows the building regs required, his standards are 100% good. Darren's prices are extremely competitive, he's no rip-off merchant.
D.Smith Contracting
Rating: 4.7 out of 5
Extension Builder in Northampton
Sole trader with 8 years experience. Drainage, civils and groundworks all undertaken to high standards. Drainage services include, off mains installations such as septic tanks and sewage treatment plants, CCTV surveys and reporting, repair works such as dig ups and non invasive patch repairs. Civils such as ducting work, draw pits. Then groundworks such as footings, foundations, concrete slabs, soak aways, artificial grass, patios, grading and site prep. Tickets and qualifications, SMSTS(site manager), SSSTS(site supervisor), first aid, NPORS digger under and above 10t, NPORS dumper, IPAF, confined space, and high pressure water jetting.
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Latest review:
Groundwork & Foundations- 27 Sep 2026
Outstanding! Couldn’t be more willing, excellent knowledge base and with clean and tidy work I couldn’t ask for better. Thanks
abode conversions ltd
No reviews yet
Extension Builder in Northampton
At Abode Conversions we strive to make your home the best version of itself. From renovating your kitchen to extending your property we plan, build and project manage at every step to remove the stress from you. With over 30 years experience in the building trade our dedicated team work with our clients to renovate, extend or simply update your home. Our exceptional workmanship and expertise ensures that projects such as extensions, bathrooms refurbishments, kitchen refurbishments, conversions and HMOs are completed to the highest standard.
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MASWAY CONSTRUCTION LIMITED
Rating: 5 out of 5
Extension Builder in Northampton
Masway Construction provide and undertake all aspects of building and carpentry works, priding ourselves on our fast growing reputation. With this in mind our services are heavily built upon not only giving an outstanding finished product but giving exceptional levels of customer service. With a wealth of experience through out we are able to deliver a quality and unique service based on our understanding of customer needs. As specialists we can help & advise with all designs and ideas.
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Latest review:
Joinery & Cabinet Making- 20 Nov 2017
Alex was very quick to provide an appointment to look at job and cost. He arranged for workmen to start work in the same week. The job was completed in a day by Chris who was very polite and helpful throughout. I would definitely hire again. Thank you M&S Construction
The Building Partnership Ltd
No reviews yet
Extension Builder in Northampton
We are a main contractor and building company that has been trading since 1996 and we undertake domestic, commercial and industrial projects of all sizes. These include extensions, refurbishments, conversions and new builds. The company is run by two co-Directors who have over 75 years of building experience between them.
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4.5

Top rated Extension Builders

Our Extension Builders in Northampton, are rated 4.5 out of 5 based on 4 reviews from customers like you.

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

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 Northampton 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 Northampton who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Northampton?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Northampton 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 Northampton extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Northampton home extension project is likely to cost.

Find extension builders in Northampton with MyBuilder

Hiring the right extension builder in Northampton 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 Northampton extension builders. Once your job is live, we’ll share it with home extension builders in Northampton who can express their interest.

Step 2: Compare different extension builders in Northampton

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

Step 3: Hire Northampton extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Northampton, 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.

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

What to ask a Northampton extension builder before hiring?

Before hiring an extension builder in Northampton or extension building company in Northampton, 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 Northampton?

An extension builder in Northampton 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 Northampton 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 Northampton?

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 Northampton 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 Northampton 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 Northampton

Can an extension builder in Northampton help with planning permission?

Yes, many extension builders in Northampton 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 Northampton handle everything from design to construction?

Many Northampton 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 Northampton help with materials and finishes?

Yes, most extension builders in Northampton 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.