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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Oakmont home improvements
No reviews yet
Extension Builder in Portsmouth
We are a father and son team, specialising in home extensions and alterations. We can offer free quotations for; - Brickwork - Plastering / rendering - Fencing - Driveways / landscaping - Facia / guttering - Electrical - Plumbing
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LJR Construction
No reviews yet
Extension Builder in Portsmouth
LJR Construction -Building Contractor operating for over 20 years, specialising in Extensions but have the team to undertake all aspects of building from minor plumbing works, re-pointing to full on House Builds. We pride ourselves on Quality and cleanliness.
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Total property services
No reviews yet
Extension Builder in Portsmouth
We take on all property maintenance
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Beyond Bricklaying Ltd
No reviews yet
Extension Builder in Portsmouth
We are a local family run company with over 20 years experience in multiple new builds, commercial work, extensions, garden walls and re pointing. We pride ourselves on quality and customer satisfaction with references if required.
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Heritage & Son Builders LTD
No reviews yet
Extension Builder in Portsmouth
With over 40 years of hands-on experience in the building industry, we've worked on a wide range of residential and commercial projects—from home extensions and loft conversions to kitchen renovations, patios, and roofing. My background includes both managing and executing jobs to the highest standard, always focusing on quality craftsmanship and customer satisfaction. Based in Waterlooville we proudly serve customers across this area and surrounding regions. Whether it’s a garden room in the suburbs or a full renovation in a nearby town, no distance is too far for the right project. Special Skills Expert brickwork, extensions, and structural alterations High-quality kitchen and bathroom installations Garden rooms and loft conversions with bespoke finishes Skilled in patios, composite decking, and outdoor improvements Roofing, cladding, window fitting, and orangeries Reliable in insurance work, repairs, and project management Strong attention to detail, problem-solving, and customer service We believe in doing the job right the first time—no shortcuts, no compromises. Our philosophy is built on honesty, reliability, and pride in our work. Every project, big or small, gets the same level of dedication and care.
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David
Rating: 5 out of 5
Extension Builder in Portsmouth
Hello my names David I'm a bricklayer and have been in the trade since 2011. I've worked on a varity of homes,projects and commercial builds and I will ensure that what you want is built to how you want it.
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Latest review:
Bricklaying- 17 Jun 2024
David, well what can I say, David completed the job in a great time scale and it's looks so much better I had visioned in my head when planning the job, he was reasonably priced, polite with great communication and kept me informed along the whole process. I have definitely found a brick layer for life and couldn't recommend him enough. Great job done and great guy.
M Liston Groundwork’s Ltd
Rating: 4.9 out of 5
Extension Builder in Portsmouth
M Liston Groundwork’s Ltd are based in Chichester. We cover all aspects of Groundworks and landscaping. From taking up concrete, taking down sheds, to full garden renovations, garden and land clearances, patios, fencing, driveways, concrete bases and much more. Contact us for a free quote today.
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Latest review:
Demolition- 22 May 2026
Max and Danny were reliable, communicated well throughout, and did a great job. They were polite, friendly, and professionally handled the challenges,as it turned out to be bigger job than expected . I’d definitely would recommend to others.
Kdj carpentry and construction
No reviews yet
Extension Builder in Portsmouth
LOCAL REPUTABLE CARPENTERS OFFERING THE FULL CARPENTRY/BUILDING PACKAGE WWW.KDJCARPENTRY.CO.UK CHECK US OUT ON FACEBOOK KENNY JONES.
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R.J Property Services
No reviews yet
Extension Builder in Portsmouth
Hi there at R.J Property Services we are a small company that provides many of your building services, from the floor to the roof. We offer all aspects of the construction industry from bricklaying, plumbing, plastering and many more. As a company we specialise in more carpentry suck as first and second fix to kitchen fitting. We try to get our customers booked in and completed as fast as possible but also with the professional and high standard finish.
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K J BUILDERS
No reviews yet
Extension Builder in Portsmouth
We undertake all manor of construction, refurbishments and maintenance, offering a full service from start to finish of any project. Such as, extensions/conversions, kitchen/bathroom refurbishments, driveways, fencing, window/door replacement. We will consider all or part of any project. We aim to deliver the highest possible finish to any job regardless of size or budget.
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LJS Finishings Ltd
No reviews yet
Extension Builder in Portsmouth
LJS was established four years ago by myself and business partner. We have both worked in the building industry for over twenty years and have a wealth of experience in home development from new builds, extensions, re-modernisation and home improvements.
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3 Futures ltd
Rating: 5 out of 5
Extension Builder in Portsmouth
We are a full turn key Construction company that offers Mechanical, Electrical & all Construction services, from a small repair to a major refurbishment or new build project. We pride ourselves in our ability to take an idea through to a completed reality, all this is achieved through our knowledgeable and expert team. We also hold accreditations such as CHAS and NICEIC
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Latest review:
Conversions - General- 22 May 2022
Terry and his team were great, work completed within time scale and accommodated changes we asked for. The finished work is exactly what we wanted. He kept us fully informed throughout and we’ll use him again when we’re ready for our next project. Would recommend.
S.A flat & pitched roofing
No reviews yet
Extension Builder in Portsmouth
At S.A Flat & Pitched we specialize in all aspects of flat and pitched roofing, delivering high-quality workmanship and reliable service every time. Our team is skilled in lead work, as well as the installation and repair of fascia, soffits, and guttering. Whether it’s a new roof, a repair, or routine maintenance, we take pride in offering durable, professional solutions tailored to your needs
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ABF plastering
No reviews yet
Extension Builder in Portsmouth
Hi we are very reliable and honest. We have over 15 years experience in plastering, rendering, we are fully qualified silicone rendering installers phone for a free quote.
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7SB LTD
Rating: 5 out of 5
Extension Builder in Portsmouth
At all seasons builders and roofers we are a family run company. With a passion for bespoke loft conversions extensions and landscaping. Inspired by traditional craftsmanship. We cut every roof by hand. Ensuring a truly tailored finish. Friendly,reliable,and always on hand with expert advice. We bring dedication to every structural or planning challenge. Let us help you transform your home
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Latest review:
Sam was very professional. On time and did everything to a high standard.
Crouchoak Construction
No reviews yet
Extension Builder in Portsmouth
I am a General Building Contractor, Undertaking Brickwork, Blockwork, all General Building Work, and also Property Maintenance and refurbs. NPORS certified 360 Excavator operator.
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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.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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.