Extension Builders in Mill Hill

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (15 reviews)

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

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 Mill Hill

3137 Results

Sort by:

Marius Moraru
No reviews yet
Extension Builder in Mill Hill
I am undertaking building and refurbishment works as well as basement conversions.
Get in touch
Steps builders
No reviews yet
Extension Builder in Mill Hill
Welcome to Steps Builders Ltd, your premier destination for expert building solutions. Specializing in loft conversions, house extensions, refurbishments, renovations, and garden fence installations, we pride ourselves on delivering high-quality craftsmanship At Steps Builders, we understand that every project is unique, which is why we tailor our services to meet your specific needs and budget. Contact us today to schedule a consultation and let us bring your vision to life
Get in touch
Builtwell Ltd
No reviews yet
Extension Builder in Mill Hill
Hello, we are experienced construction company based in West London with a team of multi skilled workers. We start as self employed business in 2007 and then expand to limited company. Specialised in high quality finish work over years we completed several "back to brick" refurbishments inc basement and loft conversions. We also specialised in kitchen and bathroom refurbishments and working with some major London’s maintenance company helping them looking after clients properties. Thank you
Get in touch
M & H BUILDINGS LTD
Rating: 5 out of 5
Extension Builder in Mill Hill
Hi. M&H BUILDINGS are offering best and professional service in and around the London area for long time.
Get in touch
Latest review:
Extensions- 10 May 2023
Highly recommendh Mo, friendly professional experienced and value for money
EEOC Ltd
No reviews yet
Extension Builder in Mill Hill
Emilian has been in construction for over 20 years. Starting out FROM solving steps to FIXING things right after high school, he HAS learned in UK how to build a house from the foundation up. Few years ago he turned his passion AND KNOWLEDGE into a business that focuses on the long-term goals and satisfaction of his clients. As a Building , Refurbishing Construction , EEOC LTD can be defined as a complex construction projects.
Get in touch
Ss construction
No reviews yet
Extension Builder in Mill Hill
With over 20 years of experience in the construction industry, our company has built a strong reputation for delivering high-quality projects with reliability and precision. We specialize in residential, commercial, and renovation projects, ensuring every build meets the highest standards of craftsmanship, safety, and durability. Our dedicated team works closely with clients to turn their vision into reality while completing projects on time and within budget.
Get in touch
Tharanikaa Traders
New on MyBuilder
Extension Builder in Mill Hill
High quality service
Get in touch
PROFIX BUILDERS LTD
No reviews yet
Extension Builder in Mill Hill
We do all spect of construction industry New build Full Refurbishing Loft Conversion Home extensions Electrical-Plumbing
Get in touch
BATKHUYAG BALJINNYAM
No reviews yet
Extension Builder in Mill Hill
I working 20 years in the building. Started working labour and now can do plastering, kitchen and bathroom installing , carpentry and decorating jobs
Get in touch
Agnuss Construction Ltd
Rating: 5 out of 5
Extension Builder in Mill Hill
We are a construction company that operates in the local area mostly, but we can also cover all the other areas of Greater London. Our Services include Extensions, Loft Conversions, Refurbishments, and basically all the aspects of building work. We specialise in residential and business projects.
Get in touch
Latest review:
Agnuss Construction carried out and completed our house renovation, kitchen extension and loft extension successfully. Elio and his father, Mario were very communicative throughout and very reliable. The works were carried out on time and on budget. I would be happy to recommend Agnuss Construction and use them again in the future.
E.V Roofing
Rating: 5 out of 5
Extension Builder in Mill Hill
I am running my own business now. I am a carpenter first and second fix. I have a lot of experience 7 years (2 years in Norway+5 years in UK). I am dedicated to providing top quality house renovations, loft conversion , roofing (tiling,fibreglass),house extension ,flooring, doors, windows, kitchen , wooden floors .
Get in touch
Latest review:
In the round I had a very good experience when working with Ermal on our 6 month project, Reliability, quality and speed all exceeded expectations. I would recommend Ermal and his team, especially for any carpentry.
JIMGOS Maintenance LTD
Rating: 4.4 out of 5
Extension Builder in Mill Hill
Jimgos Maintenance Ltd is a London-based property maintenance company delivering reliable, high-quality services across a wide range of trades. We specialise in residential and rental property works, supporting homeowners, landlords, and managing agents with both reactive and planned maintenance. * Gas & heating – boiler installations, servicing, gas safety certificates (CP12), heating system repairs * Plumbing – leak detection, pipework repairs, bathroom installations, drainage solutions * General building & refurbishment – tiling, plastering, painting & decorating, kitchen and bathroom upgrades We understand the importance of compliance, safety, and clear communication, especially when working within tenanted properties. Our team ensures all work is carried out in line with current UK regulations and industry standards.
Get in touch
Latest review:
Plumbing- 23 Jun 2026
Was sent all the information about the job and did not give a complete quote, and there was an added charge for the materials used. - Quote was paid Also did not communicate that they were going to be later than the window given for their arrival time
Whitehouse Building Construction
No reviews yet
Extension Builder in Mill Hill
Whitehouse Building Construction is a London based principle contractor specialising in all aspects of construction services. Our team uses their expertise to assist you in achieving your objectives, whether it is for investment purposes or to increase the value of your property. With over 20 years experience in the trade we can deliver high standard work at a reasonable price.
Get in touch
Spark plug electrician ltd
No reviews yet
Extension Builder in Mill Hill
We do all sort of renovations work.Any types of extensions work,new bathroom,kitchen fixtures fittings.
Get in touch
Prestige Build and Management Limited
No reviews yet
Extension Builder in Mill Hill
We are a South-East London-based company that specialises in design, bespoke property redevelopments, refurbishment, extensions and loft conversions. We also do roof replacements and create stylish bathrooms and amazing kitchens.
Get in touch
IMPERIUM CONSTRUCTION
No reviews yet
Extension Builder in Mill Hill
IMPERIUM CONSTRUCTION is a family run business, we started operations in January 2018, predominantly in general builders work, maintenance and refurbishment, then moving into masonry, metsec& drylining loft/garage conversion, and extensions. Lately, our business has expanded into traditional and insulated rendering, plastering, painting, decorations, and gardening.
Get in touch

3.9

Top rated Extension Builders

Our Extension Builders in Mill Hill, are rated 3.9 out of 5 based on 15 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 Mill Hill?

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 Mill Hill 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 Mill Hill who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Mill Hill?

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

Find extension builders in Mill Hill with MyBuilder

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

Step 2: Compare different extension builders in Mill Hill

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

Step 3: Hire Mill Hill extension builders with confidence

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

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

What to ask a Mill Hill extension builder before hiring?

Before hiring an extension builder in Mill Hill or extension building company in Mill Hill, 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 Mill Hill?

An extension builder in Mill Hill 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 Mill Hill 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 Mill Hill?

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 Mill Hill 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 Mill Hill 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 Mill Hill

Can an extension builder in Mill Hill help with planning permission?

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

Many Mill Hill 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 Mill Hill help with materials and finishes?

Yes, most extension builders in Mill Hill 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.