Extension builders in Northolt

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.6 (18 reviews)

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Some of our top rated extension builders in Northolt

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B&G Brothers Construction Ltd
Rating: 4.8 out of 5
Extension Builder in Northolt
WELCOME TO B&G BROTHERS CONSTRUCTION LTD B&G Brothers Construction Ltd is a well-established building company based in Stanmore North West London. We carry out most types of building works, including: House Extensions Property Refurbishments Loft Conversions Ground Works And all type of repairs and alterations. You can be confident in our abilities to create you that perfect home using the highest quality of materials and best possible level of workmanship
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Latest review:
Extensions- 11 Jan 2023
Rear garden extension done with new fully refurbished old house new electric new plumbing, all work done properly and good quality, experienced builders , +++ big job done within time frame and olso garden levelling with retaining wall ! Andrei and Alex recommend!
RODOF ltd
Rating: 4.7 out of 5
Extension Builder in Northolt
Construction services offered with schedule of the project with focus on quality from our long experience. Making your house extension where relaxing becomes enjoyable again in your larger space. Loft conversion where is just simply better overall with it than without it. Take the kitchen to the next level of meal making and sharing those savoury moments together with friends and family. Transforming the house to the next level of its potential through a full refurbishment project.
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Latest review:
Extensions- 6 May 2019
Christi has completed my loft refurbishment work already and was punctual, professional and flexible and worked well around my family . I would recommend him and use the company in future, great guys.
North Builders LTD
Rating: 4.8 out of 5
Extension Builder in Northolt
North Builders LTD have a team of specialists which gives you quality and high standard work on Loft conversions, Extensions, Roofing, Renovation, Refurbishment. We based in London and we cover all M25. With the best quality work and proffesional prices on the market we managed to make happy a lot of costumers around London and not only. Our priority is the costumer to be satisfied, the project to finish in timeline and on budget. Contact us for free quotes.
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Latest review:
Loft Conversion- 2 Nov 2025
Full loft conversion with dorma. Blerim always asked the right questions and made really good suggestions. Very helpful and great quality. Would happily recommend him and his team.
Maxmar Construction Ltd
Rating: 4.7 out of 5
Extension Builder in Northolt
We are a company that pride ourselves on taking excellent care of the ‘whole project’, from design to completion. We can, on your behalf, manage your project, coordinating all the required trades to turn up as and when required, leaving you to get on with daily life. Your dream home could be closer than you think, allow us to turn your ideas into reality. My company has lots of experience working on many different projects, big or small! On a personal level I am a honest hardworking individual. I have a lot of experience in all aspects of building work. I am familiar with building regulations and used to dealing with building control officers from the various local authorities. I have a fully skilled team of builders who cover all types of general building maintenance including kitchen and bathroom fitters, plasterers, flooring specialists, painters and decorators. The company offers a fully insured and guaranteed comprehensive
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Latest review:
Conversions - General- 21 Jul 2013
Flooring & lighting to extension not completed appropriately and resulted in later problems.
ax developments ltd
Rating: 5 out of 5
Extension Builder in Northolt
We are pleased to introduce ourselves as a new construction company with more than 30 years in the business. We are experienced in a wide range of construction projects, from residential to commercial buildings. We believe in providing high-quality services at a fair price. We take pride in our ability to meet and exceed our customer’s expectations. We are confident that our skills and experience will be a valuable asset to your project.
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Latest review:
Conversions - General- 31 May 2023
Great job, also waited patiently for cement to dry so could complete on time. Very pleased
Tommy Construction
Rating: 5 out of 5
Extension Builder in Northolt
Tommy Construction I offer a full range od home refurbishment services including:plastering,painting,decorating,Floors,woodwork,tiling, Plumbing,electrical services,complete house renovations,driveway,porch,patio,decking,brickwork. I have 13 years experienced and skilled team that can adapt their skill-set to many tasks.
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Latest review:
Bathroom Fitting- 19 Feb 2022
We were very impressed with Tommy Constructions. We have recommended him to friends. He was very professional. He finished the job when he said he would - to a very high standard. We are very happy with our new bathroom.
George
Rating: 5 out of 5
Extension Builder in Northolt
Mini digger and driver hire and I’m specialist in bricklaying , choose me if you need something to dig cheap Thanks
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Latest review:
Groundwork & Foundations- 7 Jun 2023
Did has work quickly
Razvan Consttruction Ltd
Rating: 5 out of 5
Extension Builder in Northolt
Razvan Consttruction Ltd is a company with a solid team of builders with experience of 20 years!
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Latest review:
We had a lot of work done including a brand new roof, whole rear and side extensions. New driveway. Landscaping. Complete fit out works inside. I wouldn’t hesitate to recommend Razvan- he is a complete professional and a really nice guy. Honest and hardworking and takes pride in his work. Out of all of the builders I have used Razvan is the only one I would use again.
Robert Bielat
Rating: 5 out of 5
Extension Builder in Northolt
I am a 44 year old qualified plumber and Gas Safety engineer. I have 14 years of experience in the UK alone. I will offer appropriate advice before undertaking any work, and I always stay as long as it takes for the job to be done properly. I am also happy to work as part of a team if needed.
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Latest review:
Central Heating- 23 May 2016
I hired Robert to remove a radiator and do a boiler service. Rob did a good job and was punctual. He also took the time to explain what he was doing and why he was doing it. I would hire him again.
AKAM BUILDERS LIMITED
Rating: 5 out of 5
Extension Builder in Northolt
Akam Builders have over ten years experience in providing cost effective solutions for domestic & commercial building requirements be it simply refreshing an old bathroom to building a nursing home. We have a hard working team ready to help you transform your house into your dream home.
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Latest review:
I had a commercial property converted into 2 one bedroom flats. Akam builders did an A-class job. The work was done to a very high standard and within the time scale stated by Gurwinder. I was impressed by the extra work he did without any extra charge. This builder is a genuine and reliable builder. The work is in perfect condition after 6 months.
R.A.S. Construction And Design Ltd
Rating: 5 out of 5
Extension Builder in Northolt
R.A.S Construction and Design Ltd is a well established company specialising in all aspects of construction and hard landscaping work. Our work is carried out by our own employed teams and we offer free advice and quotations. All our work is guaranteed and fully insured with public liability insurance for everyone’s peace of mind.
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Latest review:
Extensions- 10 Jun 2020
We had a one bedroom lower ground floor garden flat and did a side return and extension into the garden. The flat is in West Kensington area. We also did a full internal refurbishment and moved just about every wall, moved boiler, new Porcellanosa bathroom, new kitchen, new flooring throughout, a large bi-fold door in the living room to the garden. Chris and RAS Construction have been the best possible builders for this project. They were simply amazing. What we loved most about them: - speedy and no-nonsense communication (very important for us) - friendly and approachable - super professional and friendly team - very quick and helpful when a problem arose due to some architect's error - good aftercare - stayed in quoted budget - offered improvements and reasonable quotes - very easy to work with - only asked for partial payment every few weeks after job had moved along reflecting the amount charged This review was written about 8 months after the project was completed and we are still very happy with the quality. I would not hesitate to recommend Chris and his team at anytime. You hear so much about bad builders, we have been very lucky that we have found him. We are now house hunting for a bigger place and will re-engage with them for the next project.
NWLB Limited
Rating: 5 out of 5
Extension Builder in Northolt
In building trade since 2003. Fast, good prices, reliable. RENOVATIONS. BATHROOMS. ELECTRICAL. PLUMBING. TILING. FLOORING. DECORATION. KITCHENS. My fees: £135 PER DAY or £95 PER A HALF A DAY.
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Latest review:
Kitchen Fitting- 26 Sep 2026
Good communication. Turned up exactly when they said they were going to turn up. Very tidy. Would recommend.
Safe build contractors ltd
Rating: 5 out of 5
Extension Builder in Northolt
My name is Gezim and I have 10 years experience in the building trade working in a variety of jobs such as extensions, lofts, specialising in garden walls etc. I am a professional bricklayer with a handy and professional team behind me. I deliver exceptional, friendly, and fast service. I have good practical skills, with the ability to read plans, and work in a well organised and accurate way.
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Latest review:
Bricklaying- 25 Mar 2022
I found Gezim a very polite and well mannered person. He is very reliable with a professional approach to the tasks and a good listener.He build a new wall for me at my property. I am extremely happy with his works. He explained to me exactly what he was doing and why he has to do the job in such away which is very rare nowadays. I would recommends him 100% to anyone looking for building works.
Steve Rochford
Rating: 5 out of 5
Extension Builder in Northolt
City & Guilds served bricklayer 45 year’s experience Very neat
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Latest review:
The work consisted of a single storey extension incorporating a small utility room. Stephen's building workmanship was excellent, as was his labourer. His professionalism was first class and he was prompt and reliable. We were extremely pleased with the work and the price which he quoted us. We would highly recommend Steve Rochford.
Mad property care Ltd
Rating: 4.4 out of 5
Extension Builder in Northolt
Professional builder with many years’ experience, I get the job done. In the 16 years spent in construction I picked the skills required to get the work done without the need of another specialist. I’m a carpenter by trade but I’m also a plumber & so much more, I’ve dealt with all kinds of trades, building control, engineers, architects, electricians.
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Latest review:
Conversions - General- 16 Apr 2024
Job completed. Very professional and efficient service. Would highly recommend.
HaliBuild
Rating: 4.7 out of 5
Extension Builder in Northolt
We have been working as subcontractors for over 15 years now and decided it was time to branch out on our own, hence you find us on MyBuilder, We are eager to get some work done and some positive feedback to go along.
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Latest review:
Extensions- 26 May 2021
Ali Revani at Halibuild provided us with a quote which we accepted. 3 days before the job start date Ali Rezvani called and explained that they had under priced and they would want another £3000 to start the contract. Ali Rezvani then started the job but again admitted that they under priced the job and walked off the site several months into the project after the following major quality issues which needed to be addressed: Pouring the foundations in the wrong place, building the extension in the wrong place, building the roof incorrectly, installed roof steels in the incorrect position, built the extension rear wall too high, the plumbing to the boiler needed to be redone, all the plastering has had to be redone, skirtings needed to be redone, staircase had to be rebuilt. The list goes on and is 40+ points long. This has been a terrible experience and we face serious losses and a stressful dispute."

4.6

Top rated Extension Builders

Our Extension Builders in Northolt, are rated 4.6 out of 5 based on 18 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Northolt?

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

Find extension builders in Northolt with MyBuilder

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

Step 2: Compare different extension builders in Northolt

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

Step 3: Hire Northolt extension builders with confidence

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

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

What to ask a Northolt extension builder before hiring?

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

An extension builder in Northolt 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 Northolt 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 Northolt?

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 Northolt 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 Northolt 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 Northolt

Can an extension builder in Northolt help with planning permission?

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

Many Northolt 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 Northolt help with materials and finishes?

Yes, most extension builders in Northolt 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.