Extension Builders in Colindale

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (17 reviews)

Easily find verified Colindale Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Colindale.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Colindale

3325 Results

Sort by:

UK Crown Developments Ltd
Rating: 3.7 out of 5
Extension Builder in Colindale
UK Crown has experience of design and build in all types of construction work in central, north and north west London for the last 20 years with exceptional quality finishing, friendly management and supervisors, design team, staff and sub contractors. The client will get benefit of FREE advise for architectural and structural ,mechanical and electrical, including party wall matter from our company and associates.( Subject to contract ) Terms and conditions
Get in touch
Latest review:
Conversions - General- 28 Jun 2026
Ran off with money.
Ev max pro
Rating: 4.7 out of 5
Extension Builder in Colindale
Reliable. Skilled. Trustworthy. *Qualified Electrician *kitchen fitter *Bathroom fitter *All General Repair *Extension and Pergola I take pride in delivering clean, precise, and high-quality work — on time, every time. Your home’s needs are in good hands. Whether it’s repairs, maintenance, or improvements, I’ve got the skills and dedication to handle it all. You don’t need to worry — just leave it to me. While you focus on your daily life, I’ll make sure everything at home runs smoothly. Trust me to get the job done right, with care and attention to every detail.
Get in touch
Latest review:
Handyman- 18 Feb 2026
Excellent very amenable
Monte Design LTD
Rating: 5 out of 5
Extension Builder in Colindale
With over 25 years of refurbishment, building and decorating projects, I have a wide skill base. More than 80% of new work is based on client recommendation highlighting our punctuality, reliability and high standards. I manage a flexible team of highly skilled tradesmen according to each project.
Get in touch
Latest review:
Restoration & Refurbishment- 21 Jun 2026
Great Company to work with, Luigi is honest, reliable, supportive. The job was completed to High standards, on time. Thanks Dan
Handpconstruction ltd
Rating: 5 out of 5
Extension Builder in Colindale
H & P Construction is a Property renovation and maintenance company based in London, United Kingdom covering Greater London. With years of experience in the industry, our team has successfully delivered many projects for domestic and commercial properties, with clients ranging from home owners to tenants to business owners. At H&P Construction, we are committed to providing a great service to all of our clients. We understand that maintaining a property can be a hassle, which is why we offer a full suite of services to keep your property in top condition. From routine maintenance to more extensive repairs, our team of experts has the skills and experience to handle any job, big or small. We are passionate about delivering exceptional results and ensuring that our clients are completely satisfied with our work. Our goal is to make property renovation as simple and stress free as possible, so the client can focus on the things that matter most to you.
Get in touch
Latest review:
Carpets & Lino- 12 May 2024
Amazing job so far so professional
AVOTERG Ltd
Rating: 5 out of 5
Extension Builder in Colindale
Our aim is to help clients achieve their objective on time and budget and to the highest standard. We value the good communication with the clients, and try to have as much information as possible with regards to how their project must look when completed.
Get in touch
Latest review:
The job was a complete refurbishment of a one bed flat, including rewiring and re-plumbing. We would recommend Al and his team without any hesitation. From the very beginning and all the way to completion, we felt very lucky and fortunate to hire them. We found them to be very hardworking, conscientious and professional. The job was a difficult and complex one, but the team still completed within time and within budget. Al's advice made the whole process easier and we found him to be very trustworthy and honest. The end result was better than we originally hoped for and was done to a high standard.
Emerald london building solutions fixed
Rating: 4 out of 5
Extension Builder in Colindale
Refurbishment and building contractors/carpentry Contractors we are master builders and a reputation of being excellent at a reasonable Price all work is backed by guarantee on all works
Get in touch
Latest review:
Restoration & Refurbishment- 15 Jun 2020
Left the job unfinished after many days of chasing to complete. Quality dependent on individual tradesman. Initially good quality but other workmen poor. In the end I had to throw them offsite.
ELDERMANOR LIMITED
Rating: 4.4 out of 5
Extension Builder in Colindale
I have a company of 10 people who experience .Our team including experienced builders,from 5 year to more than 25 years. Our rules are respect and professional that including quality in all our jobs even if is small or big one. we work with low prices.
Get in touch
Latest review:
Tiling- 7 Jan 2015
Hired to tile a wall, came next day and did a good job. They cleaned up the area when the job was done.
Ceca Developments LTD
Rating: 5 out of 5
Extension Builder in Colindale
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.
Get in touch
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.
Samul Construction LTD
Rating: 5 out of 5
Extension Builder in Colindale
Estimate Prices From: * Loft Conversion £50k(labour+materials+scaffolding) * Home Extensions £3-4k per square metre * Basement £3-8k per square meter (labour+materials). * Bathroom refurbishment £8k (labour).
Get in touch
Latest review:
Demolition- 18 Oct 2011
Thank you very much - good job and good service. A real help!
General Building Services
Rating: 5 out of 5
Extension Builder in Colindale
We are a team of professional tradesmen who provide quality refurbishment services in London .With over 28 years experience in our industry,we provide a comprehensive services. Your project is in safe hands. I am one of the owners of the factory kitchen furniture. Do you want to have a beautiful and very firmly floors, driveways, parking lots, terraces, balconies and other places -to bell.Performs industrial and decorative flooring company Bautech.
Get in touch
Latest review:
Damp Proofing- 14 Apr 2018
Had several quotes and different opinions on how to treat my issue. Ted was by far the most knowledgeable and gave proper advice. The job was completed properly. Timekeeping and cleanliness brilliant. I have already hired him for future work and recommended to another member of my family. Very reasonable cost wise.
Ionut negru
Rating: 5 out of 5
Extension Builder in Colindale
Hi. My name is Ionut Negru and I am a skilled worker in the field of painters and decorators, tiles, laminate flooring and besides that i also do a same things related to plumbing, electrical and carpentry. I am a person who wants to make the customer satisfied and happy. I always offer good prices end high quality Thank you for your cooperation.
Get in touch
Latest review:
Bathroom Fitting- 17 Dec 2025
Jonny installed a new bathroom for us and this was done to a very high standard. He was very professional, punctual and polite and talked us through areas of the project which we weren't too sure how to proceed with. I would definitely use Johnny again and would highly recommend him.
AVStructures
Rating: 5 out of 5
Extension Builder in Colindale
A.V. Structures is a construction company working with top-rated contractors and providing services to private clients around London. Our highly experienced team of builders has excellent skills and knowledge gained delivering projects locally and abroad. We approach each building process following Environmental, Health, and Safety guidelines. All our quotes are free, and we will always try to get a quote to you within a week of us visiting your property.
Get in touch
Latest review:
Demolition- 24 Nov 2021
We employed A.V Structures for the building of an external wall around our property, the removal of a garage and the installation of railings and gates. Throughout the 4 week programme we could not have been happier with their work. Arrival was prompt, their pace of work displayed energy and purpose. They were mindful of us and our neighbours and made sure the area was left clean and tidy at the end of each days work.in addition the workmen were courteous and kept us fully informed. Alex, the owner of the company, kept in close contact with us to assure himself of our satisfaction. He came on site at intervals to check that all was going according to plan. We therefore felt completely confident that quality and outcomes were important to him. Employing A.V Structures was a decision we were pleased to have made. We would use them again without hesitation and recommend them highly to anyone considering similar work.
M&J Home Construction LTD
Rating: 5 out of 5
Extension Builder in Colindale
Dedicated team, hands-on everything with more than 15 years experience on the market, we can prove that small things can creat great expectations. Our team is dedicated to perform the perfect job for you from simple handy work to Plumbing, Electrical, Kitchens and Bathrooms, , Flooring, and many others. We cover London and 10 miles radius,
Get in touch
Latest review:
Bathroom Fitting- 23 Apr 2026
M&J done a great job redoing my whole bathroom and fitting in all the new tiles and shower units along with basin and toilet. If you are in doubt take this review as your reason to book this team in to get a fantastic job done.
Independent Building Services Ltd
Rating: 5 out of 5
Extension Builder in Colindale
We are an experienced construction company based in west acton. Quality work and reasonable prices, building maintenance, full renovation, extensions and loft conversions, design and advise plus much more . We will beat any prices and 100% customer satisfaction guaranteed.
Get in touch
Latest review:
Extensions- 9 Feb 2019
I had the pleasure of working with Habib on the renovation of my house. My review of his work during renovation: 1- He has done excellent job in rewiring the house. he segmented each floor and kitchen and put them on separate ring, he expanded consumer box for future growth as well as installing wired smoke and security alarms 2,3 - He fitted pipe and installed unvented cylinder system with water softener perfectly including multiple heating control zones which I can control each floor individually (I love it). 4- he built a beautiful and prefect extension in garden, he considered all building regulations such as structural integrity, fire safety, energy efficiency, damp proofing, ventilation and other key aspects that ensure a building is safe. In addition to above he has very good personality and he is approachable to discuss changes or add new tasks to job (unlike some builders whom don’t like it). Throughout the course of the renovation, Habib was a consummate professional. He was accurate in his initial assessment of the scale and cost of my project. Good work takes time to complete. Patience is required when you work with a perfectionist. Although my project took time to complete, I have a wonderful outcome and a work of art now. I can recommend him highly and without reservation. Thank you, Habib, At the end I would like to thank Jake for his part and hard-working during renovation of my house. Hamid
LH Builders & Plumbers
Rating: 5 out of 5
Extension Builder in Colindale
Hi we do all building works been in the business for 25 years we are a family run business.all our tradesmen are fully qualified.we aim to please our customers as word of mouth is essential to us No job to small. We also do camera drain inspections and leak detection with thermal imaging. Leah is our assistant and replies to emails and sends us the job leads while we are working
Get in touch
Latest review:
Plumbing- 8 Jul 2026
I asked Gareth to come and help identify the source of a leak as I wasn’t totally satisfied with the first opinion I had received and wanted a second opinion. He was extremely knowledgeable, very down to earth and found out what the problem was with relative ease. He has an easy confidence of someone who knows exactly that they are doing. I wish I had used him first time round.
Garey Limited
Rating: 5 out of 5
Extension Builder in Colindale
General building
Get in touch
Latest review:
Very reliable and high quality of work.

4.2

Top rated Extension Builders

Our Extension Builders in Colindale, are rated 4.2 out of 5 based on 17 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 Colindale?

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

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

What are the hourly rates of extension builders in Colindale?

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

Find extension builders in Colindale with MyBuilder

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

Step 2: Compare different extension builders in Colindale

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

Step 3: Hire Colindale extension builders with confidence

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

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

What to ask a Colindale extension builder before hiring?

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

An extension builder in Colindale 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 Colindale 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 Colindale?

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 Colindale 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 Colindale 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 Colindale

Can an extension builder in Colindale help with planning permission?

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

Many Colindale 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 Colindale help with materials and finishes?

Yes, most extension builders in Colindale 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.