Extension Builders in West Sussex

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (7 reviews)

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

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Some of our top rated extension builders in West Sussex

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JSN Construction
Rating: 5 out of 5
Extension Builder in West Sussex
JSN Construction At JSN Construction, we bring over 11 years of experience in the building and construction industry, delivering high-quality workmanship with a personal touch. Based in West Sussex, we offer a wide range of services, including: • Home extensions & renovations • Garage conversions • Groundworks & landscaping • Flat & pitched roofing • Bricklaying & structural alterations • Fascias, soffits & guttering • Carpentry & joinery • General building & maintenance work Our team is friendly, reliable, and fully insured. We take pride in every project we undertake no matter the size ensuring clear communication, attention to detail, and a clean, professional finish. Whether you are looking to transform your home or carry out essential repairs, JSN Construction offers honest advice, fair pricing, and craftsmanship you can trust. Get in touch today for a free, no-obligation quote. Your vision is our mission.
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Latest review:
Fascias & Soffits- 9 Mar 2026
Josh & Luke did a great job installing cladding on our porch. Good communication and accommodated all our requests. Took great care and completed the work to a high standard, ensuring the site was clean and tidy when finished. I have no hesitation in recommending JSN Construction.
Tjs masonry
Rating: 5 out of 5
Extension Builder in West Sussex
At TJS Masonry & Stoneworks we are new to My Builder but far from new to the trade with over 15 years experience, we work to very high standard to ensure a very happy customer. We take pride and care in every aspect of work we carry out. - Stonework - Flintwork - Brickwork - Patio’s - Re- pointing - General building Works.
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Latest review:
Stonemasonry- 8 Sep 2021
Work completed efficiently and thoughtfully. Cooperated with our need for relative quiet due to our working from home!
C&K GROUNDWORKS
No reviews yet
Extension Builder in West Sussex
Professional, reliable Groundworks company. All aspects of groundworks undertaken. Footings,drainage, Patios ,Landscaping, Extensions, Driveways Fully insured Free quotes/professional advice
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Sandstone Projects
Rating: 5 out of 5
Extension Builder in West Sussex
Sandstone Projects specialises in high-quality building and renovations with a focus on kitchens, bathrooms, full renovations, and custom features including media walls and outbuildings. Our attention to detail sets us apart, ensuring every project is finished to the highest level of excellence.
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Latest review:
Restoration & Refurbishment- 19 Jun 2026
Ross did exactly what we wanted, refurbishing our garage ceiling and replacing a single bulb light with two strip lights.
NPH Bennett Building & Roofing Contractors Limited
Rating: 5 out of 5
Extension Builder in West Sussex
Established in 1987, NPH Bennett Building & Roofing Contractors are a longstanding, professional building and roofing company covering West Sussex. Built on a dedication to quality workmanship, competitive quotations and excellent service, we work tirelessly to ensure projects are delivered within budget and on time.
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Latest review:
Restoration & Refurbishment- 30 Oct 2025
Really pleased with the work NPH did in removing our old fireplace, making good and other works. From initial quote to completion, they were very professional, communicated well, offered a fair price and carried out the work quickly once a date was agreed. Andy and Craig, who did the work, were very friendly, knowledgeable and helpful in dealing with small issues as they arose. All in all, a very good experience. Thanks to Theo and all at NPH
10x group ltd
Rating: 5 out of 5
Extension Builder in West Sussex
a team of highly experienced tradesmen operating through out sussex , surrey and london
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Latest review:
Carpentry- 13 Jun 2024
Job went perfectly. Even the weather was good. They are a good company to do business with.
Pulborough builders Ltd
No reviews yet
Extension Builder in West Sussex
Hi I have been building for 44 years ,I stared with an old firm for years. I/we know all aspects of builder work like walls, stone and flint, we do from footings to roof . We are a family business
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TLC brickwork
Rating: 5 out of 5
Extension Builder in West Sussex
A highly qualified time served bricklayer who can help you in many projects from small garden walls to a new build
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Latest review:
Bricklaying- 9 Sep 2025
Tony rebuilt a raised patio for us that was starting to collapse. When he came to assess the job is was obvious he knew exactly what needed to be done. He was able to start quickly and finished quickly leaving everything very clean and tidy. I would 100% recommend if you want a very experienced builder to do a professional job.
Build Sussex
Rating: 5 out of 5
Extension Builder in West Sussex
ALL ASPECTS OF LANDSCAPING & BUILDING WORKS UNDERTAKEN! Including: Extensions / plastering / rendering Loft conversion / drainage Patios / foundations/ groundwork’s Kitchens / bathrooms / knock throughs Swimming pools / Structual steel work Brick work / plumbing/ electrics Small Plant Hire We are fully Licenced, Insured and Environmentally Friendly
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Latest review:
Groundwork & Foundations- 6 Feb 2025
Criag and his team completed the job to a high standard and on time.
General Building
Rating: 4.7 out of 5
Extension Builder in West Sussex
No job too small or big, we find the best solutions for all jobs, always the best quality, over 10 years of experience in general construction. Call our services with confidence and we will not disappoint you.
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Latest review:
Groundwork & Foundations- 21 Dec 2025
They did exactly what I required to a very high standard and even made a special effort to do the work over the weekend.
piotr tynik
Rating: 5 out of 5
Extension Builder in West Sussex
I am general builder. I am covering all aspects building work.
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Latest review:
Carpentry- 19 Jun 2026
Excellent
KJ Property Developments
Rating: 5 out of 5
Extension Builder in West Sussex
Here at KJ Property Developments, we take a tremendous amount of pride in our work. We are a construction company, located in Worthing, that operates all over East and West Sussex. We cover all aspects of groundworks, landscaping and building. A professional and approachable team, always welcoming new customers to discuss their ideas with us whether it be a new project, repair or general maintenance of their property, ensuring consistency in attending to our customers needs.
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Latest review:
Landscaping- 29 Jun 2025
Really pleased with the work that Kallum did for us. He moved our shed and removed the concrete base for us. He was quick to respond, reliable, gave us a good price and did a great job. We actually invited him back to board our loft a few days later! Would definitely recommend and hopefully he will help us out with other jobs in the future.
JDConstruction Services Ltd
Rating: 5 out of 5
Extension Builder in West Sussex
JD Construction Services Ltd Our local and friendly family run business offers great customer care to all that contacts us at JD Construction, no matter the size and scale of your enquiry our professional and specialized team of experts are always on hand to help. We are proud to offer services such as: Brick, Block & Stone walls, Sleeper installations, Patios & Pathways (Including Porcelain) Sets, Pave’s & Edgings, Bespoke Pergola’s, Gazebo’s & Lean-to’s, Artificial Grass Installation, Turfing & Lawn Repair, Wooden & Composite Decking, Fencing & Fence Repairs, Hedge Cutting & Garden Maintenance, Gutter Cleaning, Repair & Replacement, Jet Washing & Patio/ Driveway Cleaning, Shed & Greenhouse Installations, Repointing, Fence Panel Painting, Concrete Base’s Internal & External Painting & Decorating, And much more! Warmest Regards, Director - Mr. James Plater JD Construction Services Ltd
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Latest review:
Bricklaying- 19 Feb 2026
The work involved with the job was explained in plain language beforehand. All preparatory tasks such as dismantelling the old structure and clearing the site of rubble took place. The timescale for the job was kept to and the start and finish dates were kept to. I was impressed with the work carried out and will use the firm again when i need building work done.
Edgeway Building Services Limited
Rating: 5 out of 5
Extension Builder in West Sussex
We understand that every project we undertake is unique because of the clients’ needs and their budget, which is why we tailor a solution to fit these. We believe our knowledge and expertise together with our trusted and valued tradesmen will cover every aspect of your project and will be successfully delivered on time and in budget. Focused on high quality standards throughout our work we offer the kind of professional and reliable service few other builders can.
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Latest review:
I had a single storey kitchen extension built by Jimmy and his team. As well as the construction of the building, the work involved building a new patio, laying new turf, replacing fences and building a side gate. Jimmy's team fitted a new kitchen, laid new flooring and did all the gas and electrical work necessary. The standard of all work was excellent. Everybody involved in the build was extremely hard-working and professional at all times. Communication was excellent - phone calls were either answered or returned promptly and any queries via email or text message were also responded to promptly. All members of the team were reliable and tasks were invariably completed to time. I was kept informed at all times regarding costing of any additional jobs I needed and the original build cost was adhered to.
Better Call Saul Property Development & Maintenance
Rating: 5 out of 5
Extension Builder in West Sussex
My name is Saul and I am a general builder with over 25 years of extensive knowledge and experience in the building trade. My trades range from groundworks, drainage, concreting, brickwork, carpentry, roofing, facia, soffits & guttering. For certified tradesmen l have an electrician, plumber and plasterer who work alongside me. So if you're to hire me you can be restashored that you job will run smoothly and efficiently as can be from start to finish. I am also covered with public liability insurance for peace of mind both sides.
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Latest review:
Decking- 6 Jun 2024
From day 1 till the completion they arrived promptly. We were kept fully informed all the time. The quality of their workmanship was first class. Overall they were pleasant, efficient, tidy and we would have no qualms in using them in the future.
Elevated Building Services
Rating: 5 out of 5
Extension Builder in West Sussex
We undertake all aspects of building work small or large with over 10 years experience. Being a family run business we take pride in providing a high standard of work and will never leave a customer unsatisfied.
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Latest review:
Bricklaying- 25 Jun 2024
Lovely neat build, they cleaned the area afterwards and I would recommend them for other jobs. They were also very polite and helpful

4.4

Top rated Extension Builders

Our Extension Builders in West Sussex, are rated 4.4 out of 5 based on 7 reviews from customers like you.

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

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 West Sussex 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 West Sussex who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in West Sussex?

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

Find extension builders in West Sussex with MyBuilder

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

Step 2: Compare different extension builders in West Sussex

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

Step 3: Hire West Sussex extension builders with confidence

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

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

What to ask a West Sussex extension builder before hiring?

Before hiring an extension builder in West Sussex or extension building company in West Sussex, 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 West Sussex?

An extension builder in West Sussex 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 West Sussex 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 West Sussex?

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 West Sussex 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 West Sussex 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 West Sussex

Can an extension builder in West Sussex help with planning permission?

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

Many West Sussex 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 West Sussex help with materials and finishes?

Yes, most extension builders in West Sussex 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.