Extension Builders in Portsmouth

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.6 (7 reviews)

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Some of our top rated extension builders in Portsmouth

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J B Carpentry
No reviews yet
Extension Builder in Portsmouth
Bright Carpentry. I am a carpenter on the south coast with 8 years experience. All Carpentry and Construction undertaken. No job too small!
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S&J King Building Company
Rating: 4.8 out of 5
Extension Builder in Portsmouth
Been in the building trade for over 30 years building extensions to general maintenance to new builds and loft conversions & refurbishments. specialists in Structural Alterations & steel beam erecting. Ground work & drainage. Roofing re tilling .Worked alongside Southampton council & social services converting outbuildings for extra family accommodations. We will take on any job and pride ourselves on quality and reliability
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Latest review:
Conversions - General- 23 Jul 2026
Fantastic very pleased with the work highly recommend very professional on time thank you for doing a fantastic job.
Full Deco
Rating: 5 out of 5
Extension Builder in Portsmouth
Hi,we are an experienced team and we have 8+ years experience in tiling. During this time we've worked with all types of wall and floor tiles (ceramic, porcelain, travertine, slate,cement, marble, granite, mozaic, 3d paterns, pebbles & stone) + some of the rarest tiles out there including Laminam which is a porcelain tile that comes in a range of dimensions including 1.5mX3m with a 3 or 5mm thickness. My main priorities are the job quality and 100% customer satisfaction.
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Latest review:
Excellent bathroom tiling work. Professional, tidy, and the finish looks amazing.
GT Building Services
Rating: 5 out of 5
Extension Builder in Portsmouth
We believe in working with the customer to deliver uncompromising quality at an honest price. With over 20 years’ experience in the industry we bring a wealth of skills and project knowledge in order to deliver the exact requirements to the customers needs and budget. We love what we do and are passionate about working with our customers from design to finished project. Our success in the industry is based on the relationships we form with our customers.
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Latest review:
Extensions- 9 Feb 2021
From the beginning of meeting Gareth and Tristan they are friendly and professional, they came to our home to build an extension and knock a wall down. They are an amazing pair. They are very skilled at what they do and they work continuously all day. They would clean up after themselves and were very unique with ideas for the build. If they came across an issue it was always resolved very quickly and affectly. They are very pet friendly as that can be a worry to pet owners when doing a big build. They also kept to their time scale even if that meant working late into the evening, but always arrived on time and were never late. Nothing is too much for them and it was a pleasure having them in our home. The result is spectacular and we are very pleased with what they have done. I would certainly recommend them to other people as they stand our from the rest.
Ld brickwork
No reviews yet
Extension Builder in Portsmouth
Bricklayer of 9 years. I take pride and joy in my work, looking to find more work for myself. I also can do roofing. Please check out my page on Facebook many thanks Louie
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Phoenix construction
No reviews yet
Extension Builder in Portsmouth
Welcome to Pheonix Construction With over 30 years of building experience, we are your trusted experts for all your construction needs. From extensions and new builds to beautiful landscaping, we cover every aspect of the building trade. Our comprehensive services include: •Full builds from digging out to shell construction to roof structure •Expert extensions and renovations •Professional brick laying •Stunning landscaping •Supply and fit of air conditioning systems At Pheonix Construction, quality and customer satisfaction are our top priorities. Whether you're planning a major construction project or a small extension, our skilled team is here to make your vision a reality. Contact us today to discuss your next project!
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Lancaster Home Developments
No reviews yet
Extension Builder in Portsmouth
experience in the building trade for over 10 years. Lancaster Home Developments, specialise in anything from home improvements, steelwork, through to extensions.
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Lody Construction LTD
Rating: 4.9 out of 5
Extension Builder in Portsmouth
We are a family run business that takes projects on from small garden walls, patios , to large extension projects & new builds. Customer care & satisfaction is our number one priority, we always ensure we build a very close relationship with all our clients, trust and communication is key to a successful project and happy clients. We will ensure that all of our work is to a very high standard and all work will comply with planning & building regulations.
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Latest review:
Repointing- 16 Aug 2019
Patrick responded quickly to my job request and was very pleasant to deal with over the phone and in person. He thoroughly assessed what needed to be done and made additional recommendations in a very professional manner. He was very competitive with the quote for the work, and it was completed on time and to a very high standard. Highly recommended.
SVD Construction ltd
No reviews yet
Extension Builder in Portsmouth
politeness, decency, punctuality
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Szymon Martul
Rating: 5 out of 5
Extension Builder in Portsmouth
Always looking for perfection in work.
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Latest review:
Bathroom Fitting- 6 Sep 2024
Szymon remodeled and fitted a new bathroom, the attention to detail he and Emil showed was next level. Easily the best tradespeople we’ve ever used, their skills, knowledge and perfectionism was incredibly impressive. They were also just really lovely and kind people to have in our home. Thanks so much guys!
Woodland Carpentry&Building
Rating: 5 out of 5
Extension Builder in Portsmouth
Welcome to Woodland Carpentry & Building. Your trusted partner for all things carpentry and construction. With a passion for precision and an eye for detail, we specialize in creating bespoke woodwork and delivering top-quality building solutions. From custom furniture to full-scale renovations, our experienced team combines traditional craftsmanship with modern techniques to bring your vision to life. We take pride in our commitment to excellence, integrity, and customer satisfaction, ensuring every project is completed to the highest standards. Whether you're looking to enhance your home with unique carpentry features or embark on a major building project, Woodland Carpentry and Building is here to exceed your expectations. Contact us today to discuss how we can help transform your space!
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Latest review:
Tidy and professional tradesmen. Jacob undertook for us removal of load bearing wall and fitting structural steels to open up our kitchen and living area. All the trades Jacob used were high quality and professional. We’re really pleased we used Woodland Carpentry&Building. Highly recommend.
Trusted Hands Carpentry & Building
Rating: 5 out of 5
Extension Builder in Portsmouth
Experienced fitter, carpenter, and builder with over 30 years in the trade, delivering high-quality workmanship with true German precision. I’ve completed thousands of projects, from kitchens and bespoke carpentry to full property renovations, always focusing on detail, durability, and a flawless finish. My goal is simple: reliable service, clear communication, and results that leave every client completely satisfied.
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Latest review:
Kitchen Fitting- 12 Jul 2026
We couldn't be happier with our new kitchen! From start to finish, the workmanship, attention to detail, and professionalism were outstanding. Tomasz completely transformed the room, carrying out a full renovation including the ceiling, walls, flooring, installation of the new kitchen, worktops, appliances, lighting, tiling, and all the finishing touches. Every stage was completed to an exceptionally high standard, and the quality of the work is evident in every detail. Communication was excellent throughout the project. Tomasz is very reliable, punctual, hardworking, and always kept the work area clean and tidy. Nothing was too much trouble, and he took real pride in making sure everything was perfect before the job was finished. The end result has exceeded our expectations. The kitchen is not only beautiful but also practical, modern, and finished with incredible precision. We've already received so many compliments from family and friends. We would highly recommend Tomasz to anyone.
King Construction
Rating: 5 out of 5
Extension Builder in Portsmouth
Hi, my name is Jack, I have been a qualified bricklayer for 5 years, and been in the construction industry for 8 years, learning all different types of trades along the way! I take pride in my work and work hard to strive for perfection!
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Latest review:
Conversions - General- 3 Feb 2024
the builder was very polite and helpful he quoted a fair price for doing the job he turned up on time and he did a very neat job and cleared up and removed all the rubble we are very pleased with the workmanship and would use him again
SDM BRICKWORK
No reviews yet
Extension Builder in Portsmouth
Hi my name is Matthew king owner of SDM BRICKWORK. I am a very experienced bricklayer with over 15 years experience. With a highly skilled team of worker's. No job too big or too small, if your looking for high quality work to be carried out look no further. Great competitive prices.
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B.Fowler Constructions
New on MyBuilder
Extension Builder in Portsmouth
With 15 years building experience under my belt I'm confident in the work I produce. I carry out all types of building work as well as landscaping
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Mason Bricklaying Ltd
Rating: 5 out of 5
Extension Builder in Portsmouth
Dedicated brickwork contractor providing quality construction services across the south coast. Building Dreams Into Reality !
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Latest review:
Bricklaying- 17 Apr 2024
Dan replaced our old wooden porch with a brick / UPVC one. His quote was competitive and we are very happy with the end result. Dan was punctual, hardworking, reliable and tidy. We would not hesitate to use again and / or recommend to others.

4.6

Top rated Extension Builders

Our Extension Builders in Portsmouth, are rated 4.6 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 Portsmouth?

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

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

What are the hourly rates of extension builders in Portsmouth?

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

Find extension builders in Portsmouth with MyBuilder

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

Step 2: Compare different extension builders in Portsmouth

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

Step 3: Hire Portsmouth extension builders with confidence

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

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

What to ask a Portsmouth extension builder before hiring?

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

An extension builder in Portsmouth 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 Portsmouth 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 Portsmouth?

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 Portsmouth 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 Portsmouth 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 Portsmouth

Can an extension builder in Portsmouth help with planning permission?

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

Many Portsmouth 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 Portsmouth help with materials and finishes?

Yes, most extension builders in Portsmouth 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.