Extension Builders in Newhaven

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (6 reviews)

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Some of our top rated extension builders in Newhaven

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Gardens by the Sea
Rating: 5 out of 5
Extension Builder in Newhaven
Gardens by the Sea Brighton and Hove At Gardens by the Sea, we have been providing expert landscaping services to residential and commercial clients for nearly 10 years. Our team has the knowledge and experience to handle any landscaping project, no matter how big or small
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Latest review:
Landscaping- 4 Nov 2024
The gardens are looking tidy and it’s so nice to come home to calm and order! Max was very helpful with advice both prior and during the job and very responsive to messages to clarify and answer questions. The quote was competitive and Max was even willing to do a little extra at request, again for very fair cost. End result looks good and hopefully when we can walk on the grass (once it takes root) it will be nice and even - finally!
Dovetails Carpentry & Construction
Rating: 5 out of 5
Extension Builder in Newhaven
Dovetails is a family run business. We pride ourselves on perfection and total satisfaction. No stone is left unturned. We cover all aspects from New builds and refurbs. Extensions and light landscaping to bespoke carpentry. To Kitchens & bathrooms. Decking and garden rooms. Very competitive. Trustworthy and reliable.
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Latest review:
Carpentry and cabinetry throughout whole house refurbishment. Exceptional craftsmanship and attention to detail as well as proactive problem solving going above and beyond our expectations. A talented craftsman who I would strongly recommend.
Nile international global services ltd
Rating: 4.5 out of 5
Extension Builder in Newhaven
Property maintenance, all aspects
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Latest review:
Plumbing- 23 Mar 2026
Professional, friendly and knowledgeable. Fitted the pipes and secured the pan as asked...and even fixed the pipes under the sink! Fantastic work.
Vance Plastering and decorating.
No reviews yet
Extension Builder in Newhaven
An established proffessional tradesman offering 19 years experience in all aspects of plastering, dry lining, partition walls, skimming, float and set, rendering, screeding, damp proofing, Venetian plaster, coving, repair works and more. All work is carried out to the highest of standards with reliable clean friendly and fair service.
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R j feltham
No reviews yet
Extension Builder in Newhaven
45 years experience in bricklaying .
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Hedleybuilds
Rating: 5 out of 5
Extension Builder in Newhaven
I have been a qualified bricklayer for 30 years and over this time I have gained experience working on large and small construction projects in different countries. My aim is to provide a unrivalled service from initial enquiry through to job completion by working closely with you the client. We are punctual, friendly ,neat and tidy. We approach every job big or small with the same level of professional service. All quotations are free of charge.
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Latest review:
Repointing- 8 Jun 2024
A great job done. Scaffolding sorted. Replaced window lintels, rebuild gables and repointed the front of the house. Cleanup and hose down to finish, we are so pleased with the new look house front and more importantly look forward to no more damp issues. Ian kept us up to date on what would be happening when and worked through the plan with skill, an all round great choice for the job.
R&G Construction
Rating: 4.6 out of 5
Extension Builder in Newhaven
We do a lot of extension work including kitchen and bathroom refurbishments all over Sussex. We cover all aspects of these jobs including all plumbing and electrical works. We Promise that we will do everything to fulfil our reputation.
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Latest review:
Tiling- 10 Sep 2018
Fantastic job. Tiling completed to a high standard at a good price. All completed in one day. Very happy and would definitely hire again.
Palm building and carpentry
Rating: 5 out of 5
Extension Builder in Newhaven
Palm Building are a family run, reliable building and renovations contractor specialising in all building and carpentry work. With over 15 years experience in the building industry we at Palm Building pride ourselves on making your build project run as smoothly as possible from start to finish and dedicate ourselves to quality and customer satisfaction. Please contact us for a free estimate. We look forward to hearing from you.
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Latest review:
The team at Palm replaced all of our timber weatherboarding with Cedral cladding (I found them via the Cedral website). Joey was amazing to deal with right from the start. He turned a quote around fast, it was clear and competitive. His team arrived when they said they would, they worked incredibly hard and to a very high standard. They were really easy and pleasant to have around the house too. Joey managed the whole process impeccably, right through to Building Regs completion, snagging and providing a guarantee. I didn't think it was possible to enjoy having building work done, but Joey and team proved me wrong!
Chayla Carpentry and Construction
Rating: 4.8 out of 5
Extension Builder in Newhaven
All carpentry, building and structural work undertaken ranging from refurbishments, loft conversions, extensions and smaller carpentry and building works. All carried out to a high standard, with over 20 years experience. We pride ourselves on quality workmanship at affordable prices.
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Latest review:
Extensions- 13 Feb 2025
We had a new porch put up and the roof repaired and retiled they were fantastic with communication on updates of starting the work was carried out to a very high standard and the finished product is better than expected the drive way was cleared and kept tidy and safe from start to finish. I would have no problem in recommending for building work and would certainly use again.
Joseph niall darcy
Rating: 5 out of 5
Extension Builder in Newhaven
Hi. I am Joe, a bricklayer and general builder. I started off hod carrying 15 years ago for 2 years. I was excited by the building so I trained as a bricklayer and have not looked back. I have also spent a lot of time building flint walls so I consider myself somewhat a flint specialist. Over the past few years I have been doing more and more private jobs mainly on weekends and after work, now I am full time working for myself on my own jobs . Thankyou
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Latest review:
Bricklaying- 24 Nov 2021
Joe is an excellent tradesman and takes great care in the work he does, he is also very clean and tidy. I would not hesitate to hire Joe again
Signature commercial interiors ltd
No reviews yet
Extension Builder in Newhaven
Signature is a building company with over 20 years of industry experience, delivering high-quality construction and full project management services. We manage projects from start to finish, ensuring efficient delivery, reliability, and exceptional standards on every build.
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Cranes Custom Build
Rating: 4.9 out of 5
Extension Builder in Newhaven
We are a friendly team that present ourselves well to provide quality assured work to all our customers. Our communication between the team and with our customers has been praised time and time again along with the quality of the final product. We use the same trusted sub contractors on every job to complete works alongside us to ensure you get the best quality finish. However small or big your job is, we can take it on with ease and care with full attention! Anything from Garage conversion, single story extension, groundworks, timber frame buildings, kitchens, retaining walls and much more. We offer a design and build package where we bring in our trusted architect and structural engineer to produce the plans for any works to be completed so that the process for you is hassle free and we deal with everything for you. If this is something that interests you, please do not hesitate to get in touch!
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Latest review:
Extensions- 24 Nov 2025
We engaged Cranes Custom Build to build a kitchen/Dining room extension for us. Out of all the building contractors we saw, Luke impressed us the most with his enthusiasm and friendliness. The quote he put together for the work was by far the most detailed and comprehensive, covering every aspect of the project. Luke and his team, including Max and Aylbert, worked very hard and nothing was too much trouble. Throughout the construction, the tradespeople that Luke brought in to carry out specific jobs were also all very friendly and professional – Steve, the bricklayer, Jack, the electrician, Gus the plumber, Alfie the kitchen fitter, the plasterers and roofers all worked hard and did an excellent job… Our dog loved them all and they were all great with her! We would certainly have no hesitation in recommending Cranes Custom Build as we are delighted with the finished result. Thanks team
SPR Construction
Rating: 4.6 out of 5
Extension Builder in Newhaven
Experienced Builder with over 10 years experience in the construction industry. •Bricklayer/ Builder • Stone Mason •Landscaper/gardening- full garden renovations and custom designs.
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Latest review:
Bricklaying- 28 Apr 2026
Really friendly and approachable - took time to explain what was happening and why. Good job, cleared away afterwards. Would recommend without hesitation.
P and s groundwork
Rating: 5 out of 5
Extension Builder in Newhaven
I am a family run business, a father and 2 sons with over 40 years experience in groundwork commercial and domestic all aspects of drainage repairs diversion and new projects concrete foundations oversights driveways,hardstands brickwork flintwork all aspects of hard landscape patios artificial grass bbq ornamental ponds brickwork steps and walling conservatory bases and extensions
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Latest review:
Groundwork & Foundations- 19 Mar 2022
Ian and his crew dug out the old deep-rooted shrubs and there was no damage to either brickwork nor fence; they left the side clean and tidy. I would hire them again and can recommend the crew to others who like good garden work done.
Collier Homes Ltd
Rating: 5 out of 5
Extension Builder in Newhaven
At Collier Homes Ltd, our unwavering commitment is to consistently exceed expectations, regardless of the project's scale. We achieve this by harnessing the skills, expertise, and reliability of our team of highly qualified and experienced specialist tradesmen. Should you require any project-related guidance or support, we encourage you to reach out to us. Our dedicated professionals are ready to provide you with a personalized, amiable, and informative assistance that will meet your needs.
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Latest review:
Extensions- 6 May 2026
We have just had a front porch extension completed by Collier Homes, along with work on another room, and a new soakaway and driveway remodelling. We were kept informed at all times of how things were going, and (very importantly) if they were not going to be on site we were notified ahead of time - no mystery disappearances. The work took longer than expected, partly due to weather conditions and also due to further unexpected work being needed (e.g. the soakaway). At all times Ben and his team strove to excel and were obviously intent on doing the best job possible.
Craig carpentry
No reviews yet
Extension Builder in Newhaven
All aspects of carpentry carried out Doors Skirting and architrave Laminate flooring Kitchen fitting Loft conversion Flat and pitched roof Decking And many more I've been in this trade for near 15 years, take great attention to detail and care with my work to provide the best service possible, work will always be based on honest and professional standards with a good client base behind me.
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Top rated Extension Builders

Our Extension Builders in Newhaven, are rated 5 out of 5 based on 6 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Newhaven?

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

Find extension builders in Newhaven with MyBuilder

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

Step 2: Compare different extension builders in Newhaven

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

Step 3: Hire Newhaven extension builders with confidence

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

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

What to ask a Newhaven extension builder before hiring?

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

An extension builder in Newhaven 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 Newhaven 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 Newhaven?

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 Newhaven 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 Newhaven 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 Newhaven

Can an extension builder in Newhaven help with planning permission?

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

Many Newhaven 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 Newhaven help with materials and finishes?

Yes, most extension builders in Newhaven 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.