Extension Builders in Colindale

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 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

3339 Results

Sort by:

Redmark Contractors Limited
Rating: 5 out of 5
Extension Builder in Colindale
Redmark Contractors Limited have over 10 years experience, and with many years experience in the building trade. We are a professional team are reliable builders operating in London and the wider area. We take great pride in all work which we undertake, taking great care to make sure that our client’s needs are met in a meticulous and professional manner.
Get in touch
Latest review:
Extensions- 27 May 2025
They helped build me two houses and were always putting their best foot forwards. Bhupinder and his team are lovely, and are now like family to me. They have a bright future ahead for themselves and for the clients they look after.
Onyx Interiors London Ltd
No reviews yet
Extension Builder in Colindale
Onyx Interiors London (OIL), is an all-inclusive creative platform dedicated to private clients, property investors and developers, who require a specialized or ongoing service designed to their specific needs.
Get in touch
The Architectural Design Syndicate Ltd
No reviews yet
Extension Builder in Colindale
We are a multi-disciplinary group of architectural designers, structural engineers, interior designers,builders and support staff. Our backgrounds span residential extensions, commercial developments, restaurants, and bespoke interior schemes. Across projects big and small, our collaborative process is shaped by mutual respect, timely advice, and real technical depth.
Get in touch
Mint Interior Ltd
No reviews yet
Extension Builder in Colindale
Mint Interior have over 15 years experience in supplying the same high end kitchens sold by major department chains like John Lewis. We manage the project to come within budget, specification and on time. We also manage the property refurbishment from new builds through to complete refurbishment.
Get in touch
Abt builders ltd
No reviews yet
Extension Builder in Colindale
ABT Builders LTD is a construction company operating in Lodon and surrounding areas , specialising and providing high quality in Loft conversion, extension, full refurbishment, bathrooms, painting and decorating, etc.
Get in touch
UK Development
No reviews yet
Extension Builder in Colindale
House extensions & conversions Building alterations & refurbishment Loft & garage conversions Block work brick work and plastering Plumbing & electrical Joinery Roofing & flat roofs No job too big or too small
Get in touch
KEVIN CONSTRUCTION SOLUTIONS LIMITED
Rating: 5 out of 5
Extension Builder in Colindale
Kevin Construction is a London-based, well-organised construction company specialising in large-scale developments alongside leading UK firms. We offer a full suite of services—from extensions and conversions to structural alterations and landscaping. With a dedicated team, digital management tools, and a focus on quality, we guide every project from planning to successful completion.
Get in touch
Latest review:
Fencing- 13 May 2026
Kevin turned up on time and did a solid job on my fence. Would use again
RAQS Investment Limited
No reviews yet
Extension Builder in Colindale
We carry out all types of building works for both residential and commercial properties, including loft conversations, extension, refurbishment, general maintenance, painting & decorating, carpentry, plumbing & central heating, electrical works, tiling. Our team comprises of professional builders, who have been carrying out the work in & around Greater London for the past two decades. We also have a branch office in East London and we cover East London as well.
Get in touch
Elvis Torba
No reviews yet
Extension Builder in Colindale
Hi, I’m Elvis, a professional bricklayer with over a decade of experience in all aspects of brickwork and masonry. I take pride in delivering high-quality workmanship, whether it’s garden walls, extensions, repointing, repairs, patios, or new builds. I’m reliable, hardworking, and always make sure every job is completed to a high standard with attention to detail. Customer satisfaction is very important to me, and I always aim to keep work areas tidy, finish on time, and provide honest, competitive pricing. I cover local surrounding areas and am happy to take on both small repairs and larger projects. If you’re looking for a trustworthy bricklayer who takes pride in their work, I’d be happy to help.
Get in touch
Volodymyr Girkovskyi
Rating: 4.7 out of 5
Extension Builder in Colindale
I am responsible, I do my job carefully, I have extensive experience in building and renovating houses.
Get in touch
Latest review:
Handyman- 9 Oct 2025
Good job, done as agreed
Gabriel builders
No reviews yet
Extension Builder in Colindale
I like to work precisely and to please customers at the end of the work
Get in touch
HNL Construction Limited
Rating: 5 out of 5
Extension Builder in Colindale
Home improvement company. Experience since 2005.Our job is our passion.Let us make Your dream project.Every job its important to us from small to big. We do: -kitchen -bathroom -loft conversion -extension -refurbischments -electric -plumbing -gardening …and many more
Get in touch
Latest review:
Conversions - General- 23 Mar 2026
Pawel and his team are great - got them in for a few things now, from damp repair, knocking through an internal brick wall, moving a fuse box, installing a wood floor. Always good workmanship, easy comms and decent value! Have recommended to a few friends who are equally pleased.
Pops Building Services Ltd
Rating: 5 out of 5
Extension Builder in Colindale
I am a city and guilds advanced craft qualified carpenter/joiner With over 30 years experience in the construction industry. I was the director of a property development company. I’ve managed contracts for NHS trusts as well as private contractors. The types of work I normally undertake are loft conversions, extensions, renovations, kitchen and bathroom installations
Get in touch
Latest review:
Peter was the on-site foreman on our complete house renovation, which took just over a year. This included an additional ensuite pod bedroom in the roof and a side-return and extension to the kitchen. Peter was totally reliable throughout the project and thoroughly professional. Throughout this time we were living in the house with the children. He was always on time, managed the on-site team well and communicated clearly with us. His workmanship is high quality and he was also a stickler for checking the work of others and getting it updated if it wasn’t up to scratch. I have no hesitation in recommending Peter.
Aea group ltd
No reviews yet
Extension Builder in Colindale
With over 25 years of experience in the building industry, we specialise in transforming homes through bespoke loft conversions, extensions, and renovations. Our skilled team is dedicated to delivering high quality craftsmanship and exceptional customer service, ensuring that each project reflects your unique vision. Whether you're looking to maximise space or enhance the aesthetic appeal of your home, we are committed to turning your dreams into reality. Let us help you create the perfect living space tailoring to your needs!
Get in touch
E&E construction
Rating: 5 out of 5
Extension Builder in Colindale
With over 18 years of industry experience, our construction company specializes in high-quality house extensions and loft conversions across London and Essex. We are committed to transforming homes with expert craftsmanship, tailored design solutions, and reliable project management from start to finish. Whether you're looking to expand your living space, increase property value, or bring new life to your home, we deliver outstanding results that reflect your vision and meet the highest standards of construction excellence.
Get in touch
Latest review:
Fencing- 9 Sep 2023
Ervin was polite, communicated well and worked hard to get the job done. Would hire again.
Chris Garner Adams
No reviews yet
Extension Builder in Colindale
From building custom homes to renovating existing spaces, i take pride in transforming your visions into reality. What sets me apart is my commitment to quality craftsmanship, attention to detail, and dedication to customer satisfaction. I prioritize communication, ensuring you're informed every step of the way. Whether it's a small renovation or a large-scale construction project, I am here to bring your dreams to life. Your vision, our expertise!
Get in touch

4.1

Top rated Extension Builders

Our Extension Builders in Colindale, are rated 4.1 out of 5 based on 18 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.