Extension Builders in Dorking, South East England

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (16 reviews)

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Some of our top rated extension builders in Dorking, South East England

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Astra Construction
Sponsored
Rating: 4.8 out of 5
Extension Builder in Dorking, South East England
We are a family business with over 27 years of experience in the construction industry. We are offering the highest standards to every project and make sure you get the best result's by using the right materials and work technique at the best prices. We pay special attention to every detail and our goal is to offer everyone a safe and beautiful environment to live.
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Latest review:
Conversions - General- 1 Dec 2025
They carried out a full ground floor renovation: full plumbing (including water and heating), rewiring, plan reconfiguration including change of load bearing walls, kitchen and bathroom fitting, tiling, plastering, painting. Restoration of parquet flooring due to change of floor layout, internal door frames and doors installations. Minor related repairs on the first floor: radiator replacement, creating more space for stairs. Progress remained steady and well-managed throughout. Team was autonomous (like checking with structural engineer/architect/building regulations without our involvement), and if the input was required due to insufficient details/designer solutions we were involved as expected (as we wanted). The project stayed broadly within the agreed budget and time. The slight overrun was related to an additional foundation needed, which was not planned initially. Need for additional foundation was due to structural engineer calculations and building control.
Help in Hand Builders
Rating: 5 out of 5
Extension Builder in Dorking, South East England
DORKING based Builders. Extensions. Refurbs. Bathrooms & Kitchens. Structural steel work. Design + Build + Renovate. Restoration & Refurb Specialist working in SURREY.
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Latest review:
Extensions- 5 Dec 2017
Wow! What can I say about Ian and his team, he came in on time, on budget and carried out the work to a fantastic standard. His friendly and positive nature made him a pleasure to have in our home . I’d reccomend him ( and already have) to friends and family. Thanks again and have a great Xmas .
HAYWARD HOMES
Rating: 5 out of 5
Extension Builder in Dorking, South East England
We are a team of builders that specialise in extensions, heritage work, landscaping such as garden walls, patios stonework and roofing
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Latest review:
Brickwork for a big conservatory and a side extension All done with expertise and care very happy with everything from start to finish. Good communication at all times
Master John
Rating: 5 out of 5
Extension Builder in Dorking, South East England
At Master John, we redefine excellence in residential building and renovation. With an impeccable reputation forged on our commitment to unparalleled quality, we seamlessly blend traditional craftsmanship with cutting-edge methods, ensuring every project reflects our mantra: 'Right First Time.'
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Latest review:
Carpentry- 20 Feb 2025
Tudor was really fantastic. Very responsive to messages and was just a really lovely guy when he was here. Very hardworking & considerate. Would recommend to a friend if they needed a carpenter
JOHNSON CONSTRUCTION AND BUILDING LTD
Rating: 5 out of 5
Extension Builder in Dorking, South East England
JOHNSON CONSTRUCTION AND BUILDING LTD is a family run business for over 30 years. We undertake all aspects of construction from minor repairs, kitchens, bathrooms, extensions and new builds. We also specialise in loft conversions, basement conversions, steel fabrications, hard landscaping and civil works. The company employs 4 people directly and have fully sign written vans for transportation. We have full employers and public liability cover.
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Latest review:
Conversions - General- 30 Aug 2021
Five star. Highly recommended. Tim and team undertook the garage conversion, conservatory install and garden landscaping. Work was done to the highest quality, on time and on budget. Great communication, professional and friendly throughout. Highly recommended.
Contours National Hardscapes Ltd.
Rating: 5 out of 5
Extension Builder in Dorking, South East England
With 15 years’ experience, we are renowned for delivering high quality landscaping, construction, driveway and fencing services. We are accredited members of SafeContractor and are an extremely knowledgeable, friendly, polite and accommodating bunch. We do everything we can to ensure your job is delivered with minimal disruption and maximum satisfaction.
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Latest review:
Landscaping- 23 Jan 2025
CNH did a great job on the bridge of our busy church in central Guildford. We had lots of positive feedback from our parishioners and they matched the colour of the resin bonding very well to the aesthetic of the building. The end result was that it looked like it had always been there, apart from the obvious newness of the surfacing.
Avbase Building Services
Rating: 5 out of 5
Extension Builder in Dorking, South East England
Avbase Building Services is an award-winning family business with over 24 years' experience in the building trade. We operate in and around Surrey, Sussex, London, and areas within the M25 circular. We cover all aspects of building to include extensions , complete house renovations, kitchen and bathroom fitting, open-plan living areas, garage conversions from start to finish, including wall knock-through, steel work, brick work, electrical work, tiling, plumbing, plastering, carpentry, and decorating. With a team of highly skilled builders and building trade specialists, our expert knowledge and project management skills, we ensure that all our clients receive an excellent level of service during their journey to the perfect home of their dreams. Nick
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Latest review:
Restoration & Refurbishment- 2 Oct 2024
Nick and team are a great outfit, they are professional and believe in doing a job properly. We had a new bathroom, kitchen tiling and a wall knocked through, all standards were high and they navigated a few surprises from existing problems well. Will definitely look to use again in future.
Blue property developments
Rating: 5 out of 5
Extension Builder in Dorking, South East England
I am Reilly, a carpenter with 8 years experience working out of blue property developments. I specialise in all things bespoke, kitchens, wardrobes and 2nd fix. I have carried out a large variety of jobs covering the rustic look through to ultra sleek and modern. Larger jobs can be undertaken with a bigger team and this covers all things carpentry, loft conversions, whole house refurbs, renovations and extensions. I always maintain a friendly and professional relationship with my customers.
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Latest review:
Carpentry- 10 Sep 2021
Reilly arrived to provide a quote and completed the job the same evening. Very efficient, friendly, polite and tidy. A big thumbs up from us!
On Top Lofts
Rating: 5 out of 5
Extension Builder in Dorking, South East England
We are a Carpentry, building and bespoke joinery company specialising in loft conversion, extensions, refurbishments, built in wardrobes and cabinets and all round carpentry work. The company has been running for 9 years with over 19 years of experience in the trade.
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Latest review:
Responsive, tidy, on time and did a great job fitting shelves and rails in bedroom cupboards. Would definitely recommend Max.
R&R Renovation
Rating: 5 out of 5
Extension Builder in Dorking, South East England
R&R Renovations Ltd – Trusted Local Builder in your area, Specialising in: Driveways, Extensions, Porches, Garage Conversions & Landscaping. ✅ 10+ years experience delivering high-quality results ✅ Fully insured and compliant with UK building regulations ✅ Professional finish, on time and on budget Contact us today for a free consultation and quote
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Latest review:
Decking- 8 Jun 2026
Solid communication and the guys worked very hard in very hot temperatures non-stop to get the job done. The final result was a really good at a fair price as well - would recommend Rezz for those in need of a decking job
LGC Builders Ltd
Rating: 5 out of 5
Extension Builder in Dorking, South East England
We are a family run Company and we are currently expanding our Company and have over 30 years experience in the building industry. We specialise in all aspects of the building industry and pride ourselves on our main trade as bricklayers. We guarantee a high standard of workmanship and get on well with all our clients.
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Latest review:
Bricklaying- 15 Nov 2019
They did a fantastic job and were very knowledgeable and highly professional throughout. They got on with it even though the weather was terrible and kept the site tidy and organised. We are delighted with the end result - on time and to budget too! I have no hesitation in recommending them. Thank you!
Paul Millard Design Ltd.
Rating: 5 out of 5
Extension Builder in Dorking, South East England
I provide architectural design and project management services from my base in Surrey, typically carrying out residential work, including new build housing, extensions and conversions. I have over 30 years experience within the sector and offer a quality service at competitive rates.
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Latest review:
CAD / Drawings- 14 Jun 2020
Paul has been great to work with and produced drawings and a plan we're really happy with. We're continuing to work with him on planning permission. Thanks!
HB Homes & Renovations Ltd
Rating: 5 out of 5
Extension Builder in Dorking, South East England
At HB Construction, we pride ourselves on delivering top-quality, reliable construction services with a focus on precision, safety, and customer satisfaction. With years of industry experience, our skilled team specializes in residential, from small renovations to large-scale builds. We are committed to using the best materials, cutting-edge techniques, and providing exceptional craftsmanship in every job we undertake. Whether you're looking to update your home, build from the ground up, or need expert advice and guidance, HB Construction is here to bring your vision to life. We work closely with our clients, ensuring clear communication and high standards every step of the way. Let us help you build your future, one brick at a time.
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Latest review:
From start to finish, HB Homes & Renovations were incredible. They listened to my ideas, offered creative suggestions, and executed the project flawlessly. The house feels like a new home now. I’ll definitely be using them again for future projects.
RW Building Services
Rating: 5 out of 5
Extension Builder in Dorking, South East England
We provide a comprehensive specification and quotation for all our clients without obligation. Please look no further and be our client today and forever.
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Latest review:
Extensions- 13 Jun 2024
We had a side extension with a utility room, also a new patio. Rodney and Sly were very professional and did a great job. Sly and the team was very friendly, clean and left a high quality finish.When we had issues or scope changes, we had no problem in finding a solution that work for both of us. Definately will be happy to reccomend to others.
I-MPV Construction LTD
Rating: 5 out of 5
Extension Builder in Dorking, South East England
My name is Cosmin, I am an all-round general builder but specialising as a NVQ qualified carpenter and joiner. No job is too small, and I am also happy to complete the smaller DIY/Handyman roles.
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Latest review:
Carpentry- 7 Mar 2021
Cosmin fitted new internal doors for us, in an old porperty with non-conventional sizes. He did a great job, and kept us informed throughout and advised on the best solution, for the best look. He is friendly and clean & tidy. I would recomend.
Onslow building and design
Rating: 5 out of 5
Extension Builder in Dorking, South East England
I own a building company 20 yrs of experience Total house renovations Extensions Steelworks and alterations Kitchens and bathrooms The whole package
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Latest review:
Extensions- 16 May 2022
Highly recommend Rob - he is keen, competitively priced, project manages and communicates well, and works efficiently and quickly to a high standard. He also has a good, reliable team of trades to support him. We would use him again without hesitation.
Smart windows
Rating: 5 out of 5
Extension Builder in Dorking, South East England
Smart windows from MKD windows Group are a family run business covering Essex and Surrey. We specialise in UPVC , Wood & Aluminium. Offering quality products at quality prices. Reliable service, no pushy salespeople just a straight forward price! Certass registered with a 10 year insurance backed guarantee.
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Latest review:
Windows & Doors (uPVC & Metal)- 13 Mar 2026
Would highly recommend Dean, he removed my window and fitted French doors. Thank you.

3.9

Top rated Extension Builders

Our Extension Builders in Dorking, South East England, are rated 3.9 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 Dorking, South East England?

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 Dorking, South East England 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 Dorking, South East England who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Dorking, South East England?

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

Find extension builders in Dorking, South East England with MyBuilder

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

Step 2: Compare different extension builders in Dorking, South East England

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

Step 3: Hire Dorking, South East England extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Dorking, South East England, 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.

Dorking, South East England extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Dorking, South East England extension builder before hiring?

Before hiring an extension builder in Dorking, South East England or extension building company in Dorking, South East England, 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 Dorking, South East England?

An extension builder in Dorking, South East England 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 Dorking, South East England 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 Dorking, South East England?

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 Dorking, South East England 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 Dorking, South East England 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 Dorking, South East England

Can an extension builder in Dorking, South East England help with planning permission?

Yes, many extension builders in Dorking, South East England 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 Dorking, South East England handle everything from design to construction?

Many Dorking, South East England 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 Dorking, South East England help with materials and finishes?

Yes, most extension builders in Dorking, South East England 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.