Extension Builders in Brondesbury

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (19 reviews)

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Some of our top rated extension builders in Brondesbury

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PrimeUKContractorsLtd
Rating: 5 out of 5
Extension Builder in Brondesbury
Prime UK Contractors is a London-based construction company providing high quality work for a reasonable price. Our projects are always finished on time. Our priority is the satisfaction of our clients. Our team consists of skilled, experienced builders who will help you execute your dream project.
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Latest review:
I recently used PrimeUK Contractors Limited for conversion works at our studios in Camden, and I couldn’t be happier with the results. The project timeline was set at six weeks, and the team delivered right on schedule. Pavlo and his team had a clear understanding of the scope and what needed to be achieved, going above and beyond to make the project a success. The quality and attention to detail in their work were outstanding, and my entire team was thrilled with the final result. Their pricing was competitive and fair, which was another bonus. When we have more work in the pipeline, Pavlo and PrimeUK will definitely be my first call. Highly recommend!
Rapid Response Contractors
Rating: 5 out of 5
Extension Builder in Brondesbury
We are a family run business. No job is too big or too small for us. I have been in the building trade from a early age, and qualified in gas and electrical engineering. My wife handles all admin and material orders for the company whilst im hands on with my team of workers.
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Latest review:
Extensions- 27 Jun 2018
Rapid Response completed a single storey kitchen and bathroom extension for us, as well as refurbishing our existing bathroom and doing a complete rewiring for the whole house. Sheraz and his team were very friendly and a real pleasure to deal with, and their attention to detail and customer service was excellent throughout the whole process. They talked us through each stage step by step, giving us a range of options as well as providing advice on what would work well. Even at the end of the project they asked if we had any little tweaks or finishing touches and wanted to make sure we were happy with everything, which was incredibly helpful. The prices were very reasonable and we are very pleased with the final finished work. We would highly recommend Rapid Response and will definitely be using them again in future. Many thanks!
Blueline Enterprise Limited
Rating: 5 out of 5
Extension Builder in Brondesbury
Blueline Enterprise is a family run firm specialising in high quality refurbishments, extensions, conversions and new builds. We have undertaken various projects through professional architects and private clients. We a reputable building construction firm based predominantly in North West London.
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Latest review:
Blueline completed the work to the exact high standard i was hoping for, while remaining on budget and estimated timescales - the three things that were most important to us! They were punctual, practical, knowledgeable and willing to give advice when either needed or when something could potentially be improved. They were always available to talk through what was happening at every stage of our job, with any complications arising, and importantly solutions to any problems. They knew their stuff and got the job done without any hassle either. They even came back after the job was finished to shift some pipework which i had an extra requirement for. The best feedback i could give is that we will go straight to them for any work we require in the future, and have already recommended them to friends.
XLOFTEXT LTD
Rating: 4.5 out of 5
Extension Builder in Brondesbury
We are a friendly building team with over 20 years of experience in the construction industry.Our team is skilled for loft conversion , house extension, basement extension, refurbishment, all from beginning to end, demolition to painting. With a combination of high quality of jobs and low cost we make sure all our clients are satisfied and happy with our work. I would be happy to show my previous works if you'd like to.
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Latest review:
Roofing (Pitched)- 2 Mar 2025
Job was done quickly and professionally, all staff were polite and efficient. It was done about a month ago and no leak so far, despite heavy rain. Well done.
Zamir Merko
Rating: 5 out of 5
Extension Builder in Brondesbury
Hello my name is Zamir, I have over 20 years experience in the building trade. When I complete a job I like to leave the customer very happy.
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Latest review:
I was very happy with the finished job He was very good and made sure that it was done properly. He came in 1 day to quote me and started the next day and finnished in 2 days
Constructum contracts limited
Rating: 5 out of 5
Extension Builder in Brondesbury
Founded in Twickenham by lifelong friends Alex and Steven, Constructum Contracts Ltd has been delivering high-quality construction and bespoke craftsmanship across Surrey and South West London since 2024. Our combined expertise spans building surveying, project management, general construction and high-end bespoke carpentry — giving clients the confidence of both technical knowledge and practical experience on every project. Steven began his career after earning a Diploma in Construction from Richmond College, working for a respected local builder specialising in loft conversions, extensions and residential renovations throughout the Richmond upon Thames area. While gaining hands-on site experience, he completed a BSc in Building Surveying at Nottingham Trent University. Following graduation, Steven worked for a multi-disciplinary building consultancy in London as a Building Surveyor, Contract Administrator and Project Manager. His portfolio ranged from residential apartment blocks to commercial properties, with particular expertise in the preservation and restoration of historic buildings in Central London. Most recently, he worked in Australia as a private Building Control Surveyor on new-build developments, before returning to the UK to bring his technical knowledge and project leadership back to clients in SW London and Surrey. Alex also began his studies at Richmond College, developing a strong trade foundation in carpentry. Coming from a family of plumbers and electricians, he was immersed in the construction industry from an early age. Over the years, he has refined his skills across multiple trades, including plumbing, electrical works, bespoke cabinetry and kitchen installations. With a particular focus on high-end bespoke carpentry, Alex has worked alongside some of Surrey’s leading cabinetry, wardrobe and kitchen installation companies. He now brings that craftsmanship and attention to detail to every Constructum project. At Constructum Contracts Ltd, we combine professional oversight with skilled workmanship. Whether you require building surveying services, structural alterations, extensions, renovations or bespoke carpentry, we pride ourselves on reliability, transparency and delivering exceptional results with the highest standards of workmanship. We look forward to seeing how we can assist with your project.
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Latest review:
Joinery & Cabinet Making- 9 Jun 2024
Alex has made a great job of our bedroom cupboard. He was reliable, punctual, polite, worked really hard, and cleared up afterwards. The work is of an excellent standard. Would definitely recommend!
DPS Building & Maintenance Ltd.
Rating: 4.7 out of 5
Extension Builder in Brondesbury
We build, refurbish and extend buildings. Our strong regional presence allows us to foster trusting and beneficial working partnership with our customers, consultants, supply chain and local communities.
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Latest review:
Extensions- 15 Oct 2020
DPS were superb from start to finish. They were hired to build a single storey rear extension in North London including a new kitchen and bathroom fit. I met Ralph on site along with a number of other builders, Ralph was highly knowledgeable and clearly explained what was required with practical solutions. DPS clearly scoped out the timeline and cost for each stage of the build and kept to this. They completed several agreed extras throughout the job. Communication with Ralph and the whole DPS team was first class throughout. I own a number of rental properties and can comfortably say DPS are the best builders I've dealt with, I cannot recommend them highly enough, they will be my first port of call for future work.
AJ REFURB SPECIALIST LTD
Rating: 5 out of 5
Extension Builder in Brondesbury
With over 20 years of experience in the building industry, we have honed our skills to handle projects of all sizes. Our commitment to quality and craftsmanship ensures that every job is completed to the highest standards,
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Latest review:
Bathroom Fitting- 21 Jun 2025
Great company, attention to detail & Joe went over & above. I would recommend them highly. Thanks for such an awesome renovation, hope to do future projects with you 😊
TCTSERV LTD
Rating: 5 out of 5
Extension Builder in Brondesbury
Hard working, honest and reliable builder team, with over 18 years experience in property refurbishment. Proud of our work, we always try to exceed customer expectations. We deliver top quality services that our customers can rely on - at affordable prices. Free estimates. CALL Tache TODAY!
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Latest review:
Carpentry- 12 Nov 2017
Tony is a very professional tradesman. He was punctual and completed the job satisfactory within the recommended time line. I will be using Tony again and recommend him to family and friends.
Rise Up Building
Rating: 5 out of 5
Extension Builder in Brondesbury
We are loft conversion, extension, roofing and refurbishment experts - transforming spaces, exceeding expectations. At Rise Up Building LTD, we manage projects of all sizes, ensuring a smooth and stress-free experience. We serve all of London. With over a decade of industry experience. We pride ourselves on being fast, precise and personable, leaving you with your beautiful new space. Our commitment to delivering personalised service ensures maximum satisfaction every time. Contact us for inquiries.
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Latest review:
I recently hire rise up building to do my loft conversion, everything was done fast with care and quality, i really enjoyed having this guys around. Love it how they explained every step and every detail about the work. If you looking for some honest and professional contact rise up building, highly recommend them.
PLANNING APP LTD
Rating: 5 out of 5
Extension Builder in Brondesbury
We create architectural drawings. We are specialised in applications for planning permission and building regulations and co-operate with local structural engineers for structural calculations, party wall surveyors and building companies. Our projects include extensions, lofts, garages, house&flat conversions in different councils all around London. If you are thinking of extending, converting, or splitting your property do not hesitate to contact us for a free first consultation & quotation.
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Latest review:
CAD / Drawings- 23 Sep 2020
Marius has been doing a great job and put in an extra effort to ensure we were happy with the outcome. I can not recommend Marius highly enough, especially as he managed to fix an issue with the council that we had from someone else drawings. He was patient and very well prepared. Went an extra mile and gave us different ideas/options. He was flexible with timings and most importantly with price. Had by far the best quote and did an exceptional job.
Rafa360
Rating: 5 out of 5
Extension Builder in Brondesbury
Hello, I'm Rafa360. I'm experiencing digger and dumper driver. I have many years of experience with groundwork, demolition, construction sites. I have private mini digger and many other tools whatsoever you need to do your work. Rafa360 based in Greenford London offering service of Groundwork Mini digger and dumper Digging foundation for extension Digging trenches Demolition Shed removal Wall removal Concrete path, base removal Concreting Shed base Retaining wall Handyman Fencing Driveway Garden cleaners Garden Levelling Tree stump removal And many others Nothing job is too big or to small no hesitate to invite me if you need to do your task with good quality and responsibilities person. Regards Rafa360
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Latest review:
Groundwork & Foundations- 13 Feb 2026
Rafa is a good tradesman and worked well. Would hire him again.
Ceca Developments LTD
Rating: 5 out of 5
Extension Builder in Brondesbury
Hael Construction Ltd, a proud member of the Federation of master builders, is a trusted construction company based in North London, delivering high-quality building services across the region. We specialise in new builds, extensions, loft conversions, renovations, groundworks, electrical installations, and plumbing. With a skilled team of qualified tradespeople and experienced project managers, we provide a complete service from design to completion. Our focus is on quality workmanship, transparent communication, and delivering projects on time and within budget.
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Latest review:
Extensions- 23 May 2022
Ceca Developments have done an outstanding work on our side and rear extension project, and we would definitely recommend this company. Firstly, they have offered a really competitive quote for the work and have been very transparent and detailed in regards to how long it will take to complete the project. Sebastjan has been a pleasure to deal with and was very helpful during the project, providing honest and useful recommendations and being available every time we needed anything. All the work has been completed to a very high standard and to the agreed timelines. We did not have to worry about anything during the whole project, which made this a very pleasant experience.
30 Day Extensions Ltd
Rating: 4.8 out of 5
Extension Builder in Brondesbury
COMPLETED 130 projects since lockdown•WIMBLEDON & SURBITON SHOPS now open. FREE- architectural and design services if you use us. •Fantastic reputation, reviews on google and webpage. • Speed, we build shell in 30 days. •priced by a QS and we add 15%. Simple! • •Highly skilled reputable teams. • Guarantees that mean something. • Peter snelson, the CEO has over 40 years experience in the industry internationally and nationally. A member of The Federation of Master Builders.
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Latest review:
Extensions- 30 Nov 2020
A really excellent set up of builders. Peter was great in evaluating the work and what we needed done. Sue was clear in her communication on costs, and then execution of the works by Taras and his team was superb. The extension was built in fantastic time-frame, and the end result is great. The work-ethic of the builders is what really makes them so good. They are on-time every day, and relentless with working hard each day.
D Alexa Ltd.
Rating: 5 out of 5
Extension Builder in Brondesbury
I'm a self-employed builder with more than 14 years experience. I really enjoy my job as my work changes the whole view of my clients property. I always make sure my jobs are finish to a high standard as my clients hire me for a service & I believe they should always get the best
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Latest review:
Restoration & Refurbishment- 13 Aug 2019
David and his team were excellent. They are always on time and very professional. They always cleared up at the end of the day thereby leaving very little dust or dirt around the house. No query or issue was ever insurmountable; the answer was always "no problem", which was a joy to hear when having such a large project to do. Each different team i.e. electrician, plumber, arrived exactly on schedule so there were never any delays. The end result was amazing. I highly recommend David and his team.
WILTON BUILDING SERVICES ENGINEERING
Rating: 5 out of 5
Extension Builder in Brondesbury
We serve all construction infrastructure; building, electrics, plumbing, carpentry, and more. Our services span from initial planning, through start-up and operations. We have helped customers to complete their projects, and improving their life. Characterized by the quality of our work and our persistent drive to deliver the most successful outcomes, we align our capabilities to our customers’ objectives to create a lasting positive impact.
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Latest review:
We had an excellent experience with Wilton. They made the process straight forward and quite painless from start to finish. Everything proceeded efficiently and we are thrilled with the final results. Two beautiful new bathrooms, finished on time. A great experience from start to finish.

4.1

Top rated Extension Builders

Our Extension Builders in Brondesbury, are rated 4.1 out of 5 based on 19 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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

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

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

What are the hourly rates of extension builders in Brondesbury?

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

Find extension builders in Brondesbury with MyBuilder

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

Step 2: Compare different extension builders in Brondesbury

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

Step 3: Hire Brondesbury extension builders with confidence

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

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

What to ask a Brondesbury extension builder before hiring?

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

An extension builder in Brondesbury 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 Brondesbury 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 Brondesbury?

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 Brondesbury 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 Brondesbury 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 Brondesbury

Can an extension builder in Brondesbury help with planning permission?

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

Many Brondesbury 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 Brondesbury help with materials and finishes?

Yes, most extension builders in Brondesbury 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.