Extension Builders in Lewes, South East England

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (6 reviews)

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

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Saint Carpentry
No reviews yet
Extension Builder in Lewes, South East England
Specialists in loft conversions and extensions.
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PETER HANDYMAN
No reviews yet
Extension Builder in Lewes, South East England
Hi, I run a small business making home improvements. I work alongside some established estate agents doing small jobs from a faulty lock door to full home refits. I am a sole trader and have a small team of experienced guys for any big jobs that need undertaking. I have many years of experience in the following. Dry lining.Joinery/carpentry .painting and decorating .pvc windows and doors.Roof and gutter repairs/ new installations.Plumbing/bathroom refits. Patios/Decking.Small Extension No Job too Big or Small. For a free, no-obligation quote, feel free to contact Many Thanks PETER
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Klyra Management Consultancy Ltd.
No reviews yet
Extension Builder in Lewes, South East England
Welcome to Klyra – Self-Build Construction Management Experts At Klyra, we empower homeowners to take control of their own building projects with expert virtual support. Whether you're planning a home extension, loft conversion, or full renovation, we provide step-by-step guidance in budgeting, contractor coordination, project planning, and quality control. Our clients typically save up to 20% on build costs by managing their own project with our expert assistance—without the need for a traditional project manager. With over 20 years of experience in the construction industry, we’ve helped countless homeowners navigate their projects smoothly, confidently, and cost-effectively. If you want to stay in charge of your build while avoiding costly mistakes, we’re here to guide you every step of the way. Contact us today to learn more or book a free consultation.
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K.T Building Services
Rating: 5 out of 5
Extension Builder in Lewes, South East England
We are a small building company that carry out loft conversions, extensions, renovation and all general building works. I have been a builder for 12 years and have always had happy clients.
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Latest review:
Fencing- 16 May 2017
Karl at KT Building Services did a great job replacing a damaged post and fence panel in my garden. He arrived on time, got straight to work and hauled away all the rubbish. I would definitely use his services again and would recommend him to all.
JC Kitchens and Bathrooms Ltd
No reviews yet
Extension Builder in Lewes, South East England
We are a small company with over 25 years of experience in the trades. Specialising in kitchens and bathrooms but with capacity to take on all kinds of jobs of different sizes from tiling and plumbing to full scale extensions we can do it all
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Avant Garde Construction Group Limited
No reviews yet
Extension Builder in Lewes, South East England
Avant-Garde Construction Group Ltd is an independent construction company that has a proven track record of delivering high-quality work with superb attention to detail. We specialise in Extensions and New-build homes throughout the South East of England and undertake all aspects of your building project. We pride ourselves on our commitment to provide you with a professional, yet personal service and our goal is to exceed your expectations through our workmanship and passion for construction.
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Marben Construction
Rating: 5 out of 5
Extension Builder in Lewes, South East England
At Marben Construction we undertake all aspects of building and construction. Delivering high quality workmanship, a friendly reliable service to our customers giving them peace of mind they are working with the right company delivering high standards of workmanship and value for money.
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Latest review:
Mark and his team did a full kitchen diner extension for us earlier this year. They followed our plans and even came up with some new ideas that have worked wonders. They turned up every day and worked like troopers. Very precise in their approach and they cleaned up everyday. If you want a reliable hard working team that do the work to an excellent standard, you need Marben Construction. I will be calling them again on my next building project. 10/10
GBS Interiors limited
No reviews yet
Extension Builder in Lewes, South East England
With almost 20 years high end fit out and commercial building experience, we have built a great reputation and client base in the construction industry. We will always deliver the highest quality project within the time allocated and will endeavour to fulfil our clients requirements. We can carry out all aspects of carpentry, building, Maintenace and services from a simple diy type project to extensions and new builds commercial or residential.
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BAU Property Developments Ltd
No reviews yet
Extension Builder in Lewes, South East England
Welcome to BAU Property Developments. We specialize in enhancing the value & beauty of homes property portfolios and commercial property, through development, construction & project management. We pride our selves on our dedication to turn your vision into reality. Contact us for a consultation today!
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Jp Brickwork
New on MyBuilder
Extension Builder in Lewes, South East England
JP Brickwork is a reliable and experienced building company providing high-quality brickwork and construction services. With over 20 years of experience in the building industry, we take pride in delivering strong, precise, and long-lasting workmanship on every project. Our expertise covers all aspects of brickwork, groundwork, and general building, allowing us to support projects from the ground up. Services include new build brickwork, house extensions, garden and boundary walls, footings and foundations, blockwork, retaining walls, patios, drainage, concrete bases, and structural brickwork. We also have knowledge in all general building needs, ensuring we can assist with a wide range of projects. At JP Brickwork, we believe in honest work, clear communication, and dependable service. We work closely with homeowners, contractors, and developers to make sure projects are completed efficiently, safely, and exactly as planned. No matter the size of the job, our goal is always the same: quality craftsmanship, reliability, and results that stand the test of time.
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Spartan Brickwork & landscaping
Rating: 4.8 out of 5
Extension Builder in Lewes, South East England
Spartan Brickwork & landscaping is run by Cameron he has 10+ years Bricklaying and landscaping knowledge. He produces excellent work small or large projects ranging from gardens walls, retaining walls, stone walls, extensions, all types of bonds hes got you covered! Cameron also produces excellent projects in landscaping whether it's a new Indian sandstone patio, groundworks, composite/timber deckings, turfing and everything that comes with landscaping! Cameron looks forward to hearing from you about your next project!
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Latest review:
Bricklaying- 23 Jun 2026
Brilliant job👏🏼 will hire again and recommend, nice to meet you Cameron!
Ashdown building and brickwork
No reviews yet
Extension Builder in Lewes, South East England
All building work brickwork, block work, patios, extensions
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Henty Building Services Ltd
No reviews yet
Extension Builder in Lewes, South East England
Welcome to Henty Building Services Ltd a leading building company established over 35 years ago. Our reputation is synonymous with the highest standards of craftsmanship, service and quality. We pride ourselves on consistently providing a complete, professional, trustworthy and courteous service. We aim to be competitive on pricing and have a proven track record of customer satisfaction, as evidenced by the high levels of referrals and repeat business.
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JS Fitters
No reviews yet
Extension Builder in Lewes, South East England
Hello ! We are a General building company that have been a main contractor for Kier's running building maintenance and emergency call out work on contracts for British Telecom, Thames Water, and the Metropolitan Police. Also working with local council's and estate agents, letting companies carrying out emergency works as and when required.
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LCG HOMES LIMITED
No reviews yet
Extension Builder in Lewes, South East England
At LG Homes, we're all about excellence in construction. From transforming kitchens to crafting brand-new homes, our skilled team tackles every project with precision and professionalism. No task is too grand or too modest for our dedicated workforce. Let us bring your vision to life with our top-notch building services! We are fully insured and have customer references if needed.
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Sg builds
No reviews yet
Extension Builder in Lewes, South East England
Been in the building trade for over twenty five years working for companies in different types of trade, my main passion now is building extensions as I can get involved in every part of the build
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4.3

Top rated Extension Builders

Our Extension Builders in Lewes, South East England, are rated 4.3 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 Lewes, 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 Lewes, 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 Lewes, South East England who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Lewes, 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 Lewes, 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 Lewes, South East England extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Lewes, South East England home extension project is likely to cost.

Find extension builders in Lewes, South East England with MyBuilder

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

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

When you start receiving interest, review profiles of local Lewes, 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 Lewes, South East England extension builders with confidence

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

Lewes, 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 Lewes, South East England extension builder before hiring?

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

An extension builder in Lewes, 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 Lewes, 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 Lewes, 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 Lewes, 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 Lewes, 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 Lewes, South East England

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

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

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

Yes, most extension builders in Lewes, 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.