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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Renwick construction
No reviews yet
Extension Builder in Dartford
Hi my name is Jake and Renwick Construction is my business. I have got 8 years experience in the construction/building industry. My team specialise in: - Carpentry - Brickwork - Extensions - Landscaping - Garden Buildings We’re based in Rayleigh, Essex but can travel! Here at Renwick Construction we take pride and quality in our work and always strive to fulfill our customers expectations.
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First Choice KB Constructions Ltd
Rating: 5 out of 5
Extension Builder in Dartford
At First Choice KB Construction Ltd, we pride ourselves on being your go-to solution for home improvements projects. With a wide array of expertise in house extensions, refurbishments, loft conversions, and the renovation of bathroom and kitchens, we’re fully equipped to tackle diverse projects. Our services span across various aspects including brickwork, plumbing, electrical, and more, ensuring a comprehensive approach to every job. Our team boast over a decade of experience in the field, ensuring that we deliver results that stands the test if time. At First Choice, our goal is clear: to provide top-notch quality work that lasts, while adhering to agreed-upon timelines. We prioritize flexibility to accommodate our customers’ unique needs and preference. No project is too small for us. We're dedicated to delivering excellent service, ensuring that our clients' needs and requirements are not just met, but exceeded. Customer satisfaction is our ultimate priority.
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Latest review:
Extensions- 30 Jun 2024
Absolutely brilliant from start to finish. Customer service is A+ Very happy with the fitted wardrobes and work done.
DezRez construction
Rating: 5 out of 5
Extension Builder in Dartford
Hello, I am a confident and trustworthy builder who covers a wide range of the building trades. I have 10 years experience in the industry and guarantee a desired result everytime.
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Latest review:
Plastering- 23 Nov 2025
Just had all my plastering work completed by Callum, a full Bathroom ceiling and lots of new electrical chases in 3 x additional rooms. Callum replied to my advert within an hour and he came and viewed the work and we agreed a rate within 2 days. Callum was very punctual and started work straight away by covering all our floors and carpets with plastic protectors. Callum was very polite and worked extremely hard all day without stopping, he also plastered in some additional areas adjacent to the areas that we agreed in the quote, which was great. Callum cleaned up and hovered in all the rooms when the work had been completed and left our house spotless The Finish of the plaster is fantastic and smooth. It’s a great job, well done and thank you. I wouldn’t hesitate to hire Callum again in the future and I will be definitely recommending Callum’s services to family and friends.
Rosa Construction
No reviews yet
Extension Builder in Dartford
From internal renovations that breathe new life into your space to building extensions that expand possibilities, and loft conversions that elevate residential and commercial structures—we have the experience and skill to handle it all.
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Uzi Construction Ltd
No reviews yet
Extension Builder in Dartford
We are a team of reliable, friendly and committed builders. We aim to complete our projects on time and precisely. Our priority is customer satisfaction.
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Apollo Developments Ltd
No reviews yet
Extension Builder in Dartford
We cover every aspect of construction. We have over 20 years of experience in the industry. We offer value for money and always take pride in our services.
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Bowmont building services
No reviews yet
Extension Builder in Dartford
We are a building and construction company with over 25 years experience. We can undertake complete refurbishment of residential properties, including structural alterations, extensions and substantial conversions. We provide a complete end to end service & professionally manage projects working with (if required) your architects. Whether it is a small extension, refurbishment or a major reconfiguration we have the experience and capability to complete the works to the highest standards.
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Primos Construction
No reviews yet
Extension Builder in Dartford
I have worked both in social housing and self employed. Most of my jobs as a sole trader has come from recommendations of people I've worked for. I am a stickler for time. In my business I aim to give the clients exactly what they've ask for and always always have the clients full satisfaction before leaving a job. Referral can be obtained before my employment
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StructurAll Ltd
No reviews yet
Extension Builder in Dartford
We started our company as an engineering consultancy. We developed over the years to provide in-house architectural services, interior design, structural design, project management and asset management capabilities. We believe in client service and support throughout the life of a project, rather than just providing a design solution. So we have gained a reputation of being a one-stop-shop amongst our clients; who include private individuals, contractors, and local authorities.
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Daniel Gagea
Rating: 5 out of 5
Extension Builder in Dartford
We are onest builders, quick and reliable jobs, new on my builder but with lots of experience on the trade, looking for work, we do all kind of refurbish jobs, decorating, carpentry, basic plumbing and electric, new bathrooms or kitchens, back or loft extensions ,landscaping and much more We offer guarantee for our work. Everything seen on the pictures is 100% our work and we have loads of other pictures
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Latest review:
Daniel quoted comprehensively and clearly for both jobs that I needed, building an extension and a raised patio at the end of the garden. He worked extremely hard and diligently every day. Also he would summarise what he would do next and we discussed any changes etc and which tiles or render I preferred. I am very happy with both the patio and extension and Daniel finished everything off to an excellent standard and went above and beyond the quote. I would not hesitate to use him again and recommend him highly.
Riva Building LTD
No reviews yet
Extension Builder in Dartford
We direct our offer of cooperation to architects and clients who value a high standard of project execution, professionalism. Over the years, we have completed many projects in top locations and with high technical complexity. Our professional and individual approach to each client and their project makes us perfectly understand the expectations of architects and their clients as to the effect of the project and this makes our projects unique in every aspect.
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Redmark Contractors Limited
Rating: 5 out of 5
Extension Builder in Dartford
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.
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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.
Ace groundworks
No reviews yet
Extension Builder in Dartford
Hi my names Ashley been doing groundworks for now 17 years being a foreman for 3 years so id like to think i can problem solve and plan and do jobs with quality and care
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Beyond Building & Landscaping
No reviews yet
Extension Builder in Dartford
With my bespoke creative designs and attention to detail i produce a high quality finish on every job. Covering Kent, Surrey, Sussex and London. If you are looking to have some work done to your property or swimming pool by a professional, reliable and clean work man please do not hesitate to get in contact today for a free no obligation quote and advice.
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Design Architect
No reviews yet
Extension Builder in Dartford
We are a team of passionate architects who are dedicated to bringing your vision to life. We understand that every property is unique and requires a personalised approach. We prioritize design integrity, passion, and attention to detail to ensure beautiful and impactful designs that meet professional standards. Design Architect is registered with the Architects Registration Board.
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JHL SCAFFOLDING
No reviews yet
Extension Builder in Dartford
JHL SCAFFOLDING LTD is an access solutions company based in Essex with 8 years experience , work carried out on every type of property including houses including new builds, flats , commercial and domestic . Harris fencing hire is also available We have IPAF qualifications as well as plasma .
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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.