Extension Builders in Dartford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.5 (16 reviews)

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Some of our top rated extension builders in Dartford

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NORTH STAR BUILDING SOLUTIONS LIMITED
Rating: 5 out of 5
Extension Builder in Dartford
Established in 2010 Northstar Building Solutions are a highly successful building company specializing in exceptional residential projects. As well as covering all aspects of new build and can deliver technical expertise to the latest building designs. We pride ourselves in completing a variety of projects including affordable and high specification housing, energy centres, hotels, restaurants, community centres and a church; we are experts at Extensions, Conversions.
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Latest review:
Extensions- 2 Jan 2023
Excellent work overall. Builders were very professional, hardworking and friendly. Work was completed to a high standard and we were given updates throughout the entire process. Leo and his team were very responsive and resolved issues very quickly. Will 100% use North Star again for future work.
R2R BUILDERS LTD
No reviews yet
Extension Builder in Dartford
We specialise in all aspects of groundworks, extensions, and driveways, delivering reliable, high-quality results across Kent. From foundations and drainage to full builds and patterned concrete finishes, we handle every stage with precision and care. Whether you’re extending your home or transforming your outdoor space, we bring solid workmanship, trusted experience, and a professional finish every time.
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Majestic Builders LTD
Rating: 5 out of 5
Extension Builder in Dartford
Majestic Builders LTD, we’re a friendly, reliable construction company providing all types of general building work for homes and properties. From small repairs and renovations to full home extensions and new builds, we take pride in doing the job right — safely, neatly, and to a high standard. Our team covers all aspects of residential construction, including brickwork, plastering, roofing, tiling, carpentry, and more. We believe in honest communication, fair pricing, and quality workmanship that lasts. Whether you’re improving your home or starting something new, Majestic Builders LTD is here to help make your project simple, stress-free, and built with care.
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Latest review:
Tiling- 28 Jun 2026
Majestic Builders completed the plastering and floor tiling in my bedroom, and I couldn’t be happier with the results. They were very professional, arrived on time, and adapted well to any challenges that arose during the job. The work was completed on schedule and at a very competitive price, which they stuck to. I would highly recommend them.
The Home Renovation Company
No reviews yet
Extension Builder in Dartford
One team undertaking renovations, extensions and conversions throughout Essex. All aspects of Building, Carpentry, Plumbing and Heating, Electrical and Plastering undertaken by our team of experienced and qualified tradesmen.
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Sir groundwork ltd
No reviews yet
Extension Builder in Dartford
All aspects of groundwork -driveway and patios paving&slabing -concrete foundations -fencing and turning -drainage/land drain -kerbs/edgings -block and beam -block work and brick work
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Annabaffer pierre
No reviews yet
Extension Builder in Dartford
I am a head working individual no jobs to big or to small to handle from St Lucia love to play football
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Jk services south limited
No reviews yet
Extension Builder in Dartford
We undertake all building work and can supply all trades to complete jobs to a very high standard. We are trust worth and reliable and every job we undertake is done with professionalism and to the best of ours and the customers expectations.
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Andrzej Zolnierzak
No reviews yet
Extension Builder in Dartford
With over 20 years of experience as a painter and decorator, I take pride in my precision, attention to detail, and commitment to perfection. I always strive to deliver the highest quality results in every project I undertake.
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Option group
No reviews yet
Extension Builder in Dartford
London Essex based sole trader NVQ3 certified
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Appan Ltd
No reviews yet
Extension Builder in Dartford
Hi All We run a company with over 10 yrs experience in construction industry undertaking all type off building work to high standards and offering reliable and competitive prices
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Vadym
No reviews yet
Extension Builder in Dartford
Labourer
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DM Builder
No reviews yet
Extension Builder in Dartford
I am a general builder and have 15 years experience in the trade. I have worked for large companies which have enabled me to gain a vast knowledge in many areas. I have completed large refurbishments to smaller projects. I work with qualified Electricians and plumbers so am confident that I can complete tasks.
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Craig Rutherford
No reviews yet
Extension Builder in Dartford
I have been in building trade over 40 years and have vast experience in all trades . Plastering is my favoured trade followed by bricklaying . I build extensions, refurbishing work, concreting, driveways, landscaping, plumbing, carpentry, tiling outside and inside. All roofing including flat roof in fibreglass finish. I work 7 days a week if required and am available 24hrs a day . I travel to all parts of the uk if required and no job is too big or small . I ensure the work area is kept clean and tidy and I offer advice and alternative ideas if required .
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TMS Carpentry
No reviews yet
Extension Builder in Dartford
Specialists in all Carpentry Aspects. All building work undertaken with well trusted sub contractors. Over 10 years experience working for high quality regional building contractors.
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Walsh bricklaying ltd
No reviews yet
Extension Builder in Dartford
I’m a bricklayer for nearly 20years,I do garden walls,extensions right up to houses and more..I take all jobs serious and am willing to do most no job to big or small it’s all work,,willing to help and advise 👍
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Kins row build Ltd
No reviews yet
Extension Builder in Dartford
Welcome to our building company Kings Row Build ( Registered as Kins Row Build LTD), where we specialise in home extensions and loft conversions. With over 10 years of experience in the industry, we have built a strong reputation for delivering high-quality projects that exceed our clients' expectations. Our team of skilled professionals is dedicated to providing exceptional service and craftsmanship, ensuring that every project is completed to the highest standards. Whether you are looking to add extra space to your home with a stylish extension or make the most of your loft space with a conversion, we have the expertise and skills to bring your vision to life. We take pride in our work and strive to create beautiful, functional spaces that enhance the way you live. Our extensive portfolio of successful projects showcases our commitment to excellence and attention to detail. If you are considering a home extension or loft conversion, look no further than our building company. Contact us today to discuss your project and see how we can help you transform your home.
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3.5

Top rated Extension Builders

Our Extension Builders in Dartford, are rated 3.5 out of 5 based on 16 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Dartford?

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

Find extension builders in Dartford with MyBuilder

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

Step 2: Compare different extension builders in Dartford

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

Step 3: Hire Dartford extension builders with confidence

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

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

What to ask a Dartford extension builder before hiring?

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

An extension builder in Dartford 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 Dartford 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 Dartford?

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 Dartford 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 Dartford 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 Dartford

Can an extension builder in Dartford help with planning permission?

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

Many Dartford 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 Dartford help with materials and finishes?

Yes, most extension builders in Dartford 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.