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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KJT Developments Ltd
No reviews yet
Extension Builder in Portsmouth
Construction company based in Farlington near Portsmouth, we have been established over 20 years dealing with construction projects from small extensions to large renovations and new builds. We cover all aspects of construction from groundworks to roofing.
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CST repointing & Flintwork
No reviews yet
Extension Builder in Portsmouth
15 years bricklaying and flint laying. Repointing and damp proofing experience. Always achieving work at the highest standard with a happy work environment for customers needs.
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Madcat productions LTD
No reviews yet
Extension Builder in Portsmouth
I have got level one and level two in carpentry and joinery. I’ve been a carpenter now for nearly 35 years.
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Lyle Steyn
No reviews yet
Extension Builder in Portsmouth
I am a highly skilled first and second fix carpenter with over 20 years of experience in the construction industry. My work is defined by precision, exceptional attention to detail, and a commitment to the highest standards. In addition to my carpentry expertise, I have extensive construction knowledge and management experience, enabling me to oversee projects efficiently and deliver exceptional results. My dedication to craftsmanship has been recognized with Sussex Heritage Trust Awards in 2021 and 2024, which celebrate outstanding quality and sustainability in construction. These achievements reflect my ability to produce work that is not only functional but also timeless and innovative. Whether it’s bespoke carpentry, intricate timberwork, or larger-scale building projects, I take pride in reliability, professionalism, and maintaining clear communication with clients. If you’re looking for someone with a passion for quality and a proven track record, I’d love to help bring your vision to life.
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CGMT Carpentry & Build
No reviews yet
Extension Builder in Portsmouth
At CGMT Carpentry and Build, we take pride in turning ideas into reality. From custom carpentry to full property renovations, we provide a dependable, friendly service with attention to detail at every stage. Our goal is simple: quality work, honest communication, and results you’ll be proud of.
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D. G. White
Rating: 5 out of 5
Extension Builder in Portsmouth
Hi I'm Dave. I took over my fathers business in 2008 which he had established in 1969. I immediately started working with him when i left school in 1992, so i have a great deal of experience and i learnt a great deal from my father who had a fantastic reputation around the local area. I take on any job big or small. I can do a bit of everything which means you won't have lots of different trades on site all at once.
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Latest review:
Carpentry- 22 Aug 2025
Dave was friendly, professional and did a great job replacing a damaged door. Will definitely contact him again for any future building work needed
KCO LANDSCAPES
No reviews yet
Extension Builder in Portsmouth
Our business is high end we deliver new builds extension and high end landscaping, ranging from soft to hard. We pride ourselves on our reputation and always go above and beyond.
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Luke Boggis
No reviews yet
Extension Builder in Portsmouth
We are a reliable and experienced building company delivering high-quality construction and renovation services. We specialise in residential and commercial projects, including extensions, refurbishments, new builds, and general building work. With a strong focus on craftsmanship, clear communication, and customer satisfaction, we take pride in completing projects on time, on budget, and to the highest standard. Our skilled team ensures every job is carried out with attention to detail, safety, and professionalism.
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Wigglesworth Limited
Rating: 5 out of 5
Extension Builder in Portsmouth
Specialist bathroom & kitchen fitter, self-employed over 20 years, working with a time-served carpenter. We have pride in what we do & take the time to ensure the finished project is exactly as you wanted it. Have all relevant qualifications in plumbing & electrics, as well as being fully insured.
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Latest review:
Bathroom Fitting- 3 Sep 2018
Mike was very professional from the start of our process finding someone to build our en suite bathroom. He came up with the best solution for the long soil pipe we needed and demonstrated the previous experience to make it work. He even tried to fix our existing toilet when he had just come to quote! Mike and his colleague Kear worked hard through a very hot week in July and always left the house tidy each day. As long as you keep providing tea with 2 sugars they just keep going! They even fixed our garage door, probably out of frustration of opening it each morning. I would recommend Mike for any bathroom or plumbing work.
KinleyPaving
No reviews yet
Extension Builder in Portsmouth
Reliable, Skilled, and Ready to Transform Your Outdoor Space With years of hands-on experience, I provide top-quality groundworks and landscaping services tailored to your needs. I take pride in every job, big or small, and deliver clean, durable results that stand the test of time. Services offered: • Bricklaying • Fencing • Timber & Composite Decking • Steel Work • Drainage Solutions • Block Paving • Resin Driveways • Patios • Artificial Lawns • Tarmac • Raised Flower Beds • Concreting • All Groundworks Whether you’re looking to improve your garden, upgrade your driveway, or need expert foundations laid, I offer reliable, tidy, and affordable solutions. I work closely with each customer to bring their vision to life and never cut corners on quality. Get in touch today for a no-obligation quote—let’s build something solid together.
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Flux Construction
No reviews yet
Extension Builder in Portsmouth
I am mainly a bricklayer have been laying for 7 years, have experience in general building, can also do patios, driveways, fencing, steel work.
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Conlon Carpentry and Construction
Rating: 5 out of 5
Extension Builder in Portsmouth
I undertake all aspects of carpentry and joinery. With 10+ years in the trade, there’s nothing I haven’t done. From roofs to walls, doors and floors to built it wardrobes and cabinets.
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Latest review:
Carpentry- 2 Apr 2024
Excellent job. First class. Would highly recommend.
K ransley installations
Rating: 5 out of 5
Extension Builder in Portsmouth
Double Glazing southampton Ltd is a friendly Family run construction business , with over 18 years in the trade with many other works undertaken Extensions , Windows ,doors ,conservatories orangeries, warm roof, fascias and guttering , kitchens supplied and installed . Domestic and commercial. Certass registered Covered with q.a.n.w insurance-backed guarantee.
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Latest review:
Conservatories- 14 Dec 2022
Kyle has carried out the removal and replacement of our lean-to conservatory. His advice at the initial visit and throughout the work was very helpful and he was prompt in submitting his quotation. Once the order was placed he informed us of the starting date and arrived with all the materials required which ensured that the work progressed quickly and was completed within the given timescale. Kyle was very competent, polite and friendly and cleaned up thoroughly after job was completed. We are very satisfied with the work carried out and from our experience would be more than happy to recommend K. Ransley Installations.
Lamric Property Developments
No reviews yet
Extension Builder in Portsmouth
At Lamric property developments, we are your trusted partner for all your construction needs. With 25 years of combined experience, we specialize in uPVC installation and excel in building extensions, loft conversions, and comprehensive house renovations. Our extensive experience includes a diverse range of successful projects, showcasing our expertise and dedication to quality. Based in Hampshire, we proudly serve the local area and are also available for projects in surrounding regions. Whether you need a small upgrade or a major renovation, our team is ready to bring your vision to life. Our special skills include precise uPVC installation, innovative extension designs, expert loft conversions, and meticulous house renovations. We combine technical knowledge with a passion for craftsmanship, ensuring that every project is completed to the highest standards. Choose Lamric because we are committed to excellence, reliability, and customer satisfaction. We take pride in our work philosophy: to deliver exceptional results with integrity and professionalism. Trust us to handle your construction needs with care and expertise, and experience the difference of working with a dedicated team.
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M&L Page Construction Ltd
No reviews yet
Extension Builder in Portsmouth
I have been a director of M&L Page Construction ltd for 16 years. We undertake all building works from the ground up. We specialise in household extensions and pub & bar refits.
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Mr Developments
Rating: 5 out of 5
Extension Builder in Portsmouth
General building contractor Time served plastering and bricklayer, with over 30 years experience on own contracts Specialises in extensions and renovations, have carried out contracts in past to value of 250k on total renovations Well experienced in all ground works
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Latest review:
Extensions- 27 Jun 2019
Mike built our extension (20m sq approx.) which involved rerouting a number of waste, soil & rainwater pipes, blocking up an existing window, fitting two new windows, sliding doors and roof lantern and laying a new patio area. He started and finished the work on time and readily coped with adjustments we made to the plans. My wife and I are very pleased with the results. Mike is a willing and able worker with an easy going, genial nature who wants to do a good job. We've asked him to quote for some addition work and I'm happy to recommend him.

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.