Extension builders in Dartford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.8 (16 reviews)

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

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 Dartford

2174 Results

Sort by:

Rightway roofing and building services
No reviews yet
Extension Builder in Dartford
I am a family run business and have been trading since the mid eighties. I have a team of tradesmen with a wealth of experience in the building trade. We are all friendly, trustworthy, reliable and guarantee our work. General building and roofing work.
Get in touch
Excell building and construction ltd
Rating: 5 out of 5
Extension Builder in Dartford
Our company is building reputation step by step and have the best recommendations from our clients.
Get in touch
Latest review:
Yuriy was recommended by one of my close friends and I wasn't disappointed. Yuriy came up with creative solutions for us to stay on budget. The whole process went smoothly, was handled cleverly and delivered on time. I am happy to give my recommendations at any times.
SDK Landscapes and Driveways
Rating: 5 out of 5
Extension Builder in Dartford
We are a small family run business, I have been paving now for over 20 years. Danielle is the inspiration behind the design and my dad has had a lifetime in the building trade. we will undertake all aspects of landscaping. We pride ourselves on the quality of are work and take great satisfaction from the jobs we do for are clients.
Get in touch
Latest review:
Landscaping- 27 Sep 2024
Simon, Danielle, Craig and Harry did a fantastic job for us on our new front, rear and side patio, new side gate and post, and new lean to. They interpreted our vision perfectly and used their experience to make great suggestions. We are delighted with the outcome. They are a friendly and courteous team; I would highly recommend them and would go to them first for any future quotes.
FERARU GROUP BUILDERS LTD
Rating: 4.7 out of 5
Extension Builder in Dartford
I've worked in the UK for 8years now and I do my job to a high standard.
Get in touch
Latest review:
Extensions- 15 Jun 2024
My advice is avoid. Poor communication Poor workmanship Poor quality finish Create 'issues' during build to make you pay more than quoted Left project incomplete We pursued through the Court and won the case, but of course he is unable to pay, so we are pursing further through the Court. He will respond to the review with some excuse, but there is absoultley no excuse for poor workmanship and quality. Happy to share pictures and videos on request.
Max
Rating: 5 out of 5
Extension Builder in Dartford
M&M Acorn LTD provide a wide range of construction services throughout the east London , designed to meet the needs of your project. To find more about what we do and to get a free quotation, don't be afraid to get in touch with our qualified staff right now.
Get in touch
Latest review:
Painting & Decorating- 28 Sep 2022
External Painting & Repairs and redecorating hall,stairs and landing. Very pleased with the work Max and his team carried out. Commenced the work as agreed, good time keeping, very polite and kept me informed regarding progress. Completed on time. Also very clean and tidy workers taking time to cover all areas with plastic sheets, cleaned windows on completion. I would have no problem recommending Max and his team and would employ them again.
Multiskills
No reviews yet
Extension Builder in Dartford
Bathroom ,Garage Conversions, House Extensions Kitchen fitters, Loft conversions, Refurbishments, Refurbishments, Roofing , plumbing ,
Get in touch
I craft limited
No reviews yet
Extension Builder in Dartford
The best in what we do
Get in touch
Johny the Builder
Rating: 5 out of 5
Extension Builder in Dartford
PROFESSIONAL BUILDERS. Johny The Builder Ltd are Building Contractors based in Romford, Essex. We undertake commercial and domestic Refurbishments, Roofing, Loft conversions, Brickwork, Extensions, Basements and new building projects. We make your House a Home
Get in touch
Latest review:
Extensions- 28 Sep 2018
Johnny was very nice to deal with. When there were problems they were quick to find ways to rectify them. They started at short notice& finished on time which I was very impressive. We got a no. of quotes,Johnny was middle of the range but with a better level of service than others. Johnny was very open about when things might cost more &gave us the option if we wanted to proceed. A few things to note: -this was our 1st experience of any building work &we should have remembered they are builders, not designers -we both work long hours &so most days didn't see the team to get an update or brief them. This meant a few things were missed or miscommunicated - while most of the team were lovely the electrician used was horrible to deal with. He got very cross about requested changes, didn't deliver everything requested &just did silly things like putting in a light switch with 2buttons where there was only one Light or hanging lights incredibly low when we had given measurements of where we wanted them - we got Johnny's team to build some extra storage for us which on the whole was fine but some things weren't centred or for example the wine rack they built was wonky Overall, it was a good experience and we would recommend them but would suggest be home to oversee the work more than once a week (must be true of any building work!) and get your own electrician. Very happy to talk to people and give references-the house looks great now.
SIDDH GLAZING LTD
Rating: 5 out of 5
Extension Builder in Dartford
WE ARE A UPVC AND ALUMINIUM DOOR ,WINDOW BIFOLD MANUFACTURERS .
Get in touch
Latest review:
Nice and clean job and finished on time
Sams
Rating: 5 out of 5
Extension Builder in Dartford
Experiences Multi-Trade Builder- 25+ years in Construction . With over two decades of hands on experience in the construction industry, I deliver high quality workmanship across a wide range of trades. My skills cover every aspect of building and property improvement, including: - Plastering & Painting (Flawless finishes and attention to detail) -Tiling & Screeding (Precision work for long lasting, attractive surfaces) - Carpentry (Custom solutions for interiors and exteriors) -Groundwork (Block paving, fencing, and landscaping projects. - General Handyman Services (efficient solutions for any repair, installation or maintenance need. I pride myself on reliability, clear communication, and a strong commitment to customer satisfaction. Whether it's a small repair or full renovation, I bring the same level of care and professionalism to every project.
Get in touch
Latest review:
Fencing- 2 Apr 2026
Clear communication and used good quality materials for the job. Highly recommended.
A&Z Builders
Rating: 4.7 out of 5
Extension Builder in Dartford
We have been in the building trade for 25 years doing all various types of jobs from water tap to new built houses. We are fully qualified tradesman We all have a roles in the team and everyone is pride in being the best at what we do. FREE QUOTES are given with no obligation! PUNCTUAL HONEST and RELIABLE.
Get in touch
Latest review:
Restoration & Refurbishment- 18 Sep 2026
A&Z Builders completed a full refurb of our 3 bedroom house. They completed it to a very high standard within budget. They are incredibly hard working - even on Saturdays - and even more helpful. I would recommend them in an instance.
PBC Interior Design and Build
Rating: 5 out of 5
Extension Builder in Dartford
Choosing the right contractor can be a minefield if your project needs specialist skills or a little extra care. As an established building company with 42 years trading experience we have gained an enviable reputation for personal service quality of workmanship and attention to detail.
Get in touch
Latest review:
Extensions- 17 Nov 2016
Geoff and his men did a fantastic job. They were all very professional but also really friendly and helpful. They made sure we had, as little disturbance as possible whilst the job was going on which was great. Nothing was too much bother for them and I wouldn't hesitate recommending them to others.
CD Building Services
No reviews yet
Extension Builder in Dartford
CD Building Services, is a family run business with over 30 years experience in the construction industry, from putting up a fence to building a house. Our work is of a high standard and always to customers satisfaction. The work we undertake is ✖️ Brickwork ✖️Patios/ driveways ✖️Fencing ✖️Flooring ( carpets, laminate, vinyl ) ✖️Extensions ✖️Plastering ✖️ Decking ✖️Artificial grass
Get in touch
JK Habitat Ltd
No reviews yet
Extension Builder in Dartford
Design and Build specialists providing planning assistance and construction till completion. Architectural planning / Bathroom / extensions and general building designs and installation
Get in touch
Jh builders uk Ltd
No reviews yet
Extension Builder in Dartford
With over 35 years of experience in kitchen fitting and home improvements, we provide a professional, reliable, and high-quality service. We specialise in the installation of kitchens, including cabinets, worktops, appliances, and finishing details, ensuring every project is completed to the highest standard. We take pride in our workmanship, attention to detail, and customer satisfaction, delivering beautiful, functional kitchens that are built to last. Clean, tidy, and dependable, we are committed to completing every job on time and with minimal disruption to your home.
Get in touch
Build-uk Ltd
Rating: 5 out of 5
Extension Builder in Dartford
We have over 30 years experience within the construction industry. Our Company Builds anything from Extensions, New Builds, Apartments and Houses. Please note that Planning Permission & Building Regs must be in place before you shortlist us as we canot give you a price without them. We are friendly, reliable, polite and have pride in what we build. You are welcome to view any of our work and speak to our customers upon request at any time. Thank you.
Get in touch
Latest review:
Dale and his team built a double storey extension including loft conversion. Excellent workmanship with no fuss would definitely recommend.

3.8

Top rated Extension Builders

Our Extension Builders in Dartford, are rated 3.8 out of 5 based on 16 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 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.