Basement Conversions

Transform Your Home with The Expert Basement Conversion Company in Portsmouth

Are you looking to maximise your living space? A basement conversion in Portsmouth can be the perfect solution to create a practical, usable area within your property. Not only does it increase your home’s value, but it also ensures you meet ‘Habitable Living Standards,’ making it a comfortable and functional space for everyday use.

As leading basement builders in Portsmouth, Limewood Builders specialises in creating bespoke basement conversions tailored to your needs. Our expert designers and engineers work closely with you to determine the most suitable design and construction methods for your space, ensuring that your basement conversion is both functional and stylish.

With years of experience, our basement building company is dedicated to delivering high-quality results. Limewood Builders provides skilled operatives who adhere to all legislative standards, so you can rest assured that your basement is built to last. Ready to transform your home? Let Limewood Builders bring your basement vision to life!

If you want a cosy lounge, home office, or playroom, Limewood Builders can help. We plan layouts, lighting, insulation, and ventilation so your basement is practical, stylish, and perfect for everyday use.

Yes! A well-done basement adds extra living space and can boost your property’s value. We make sure the conversion is fully functional, stylish, and meets all habitable living standards.

Absolutely. Every basement is unique, so we tailor the design to your needs. From layouts to finishes, we make sure the space suits your lifestyle and your vision.

Yes. Our team uses high-quality materials, modern methods, and follows all Portsmouth regulations, so your basement is safe, legal, and built to last.

Reliable Basement Conversions in Portsmouth

Are you looking to enhance your home with a basement conversion? Then turn to us without a second thought. We use modern construction methods and best practices to offer a cost-effective solution that ensures you get the best value for your money. As experienced basement builders in Portsmouth, we provide cost certainty so you know exactly what to expect in terms of both cost and time. We believe in transparency, ensuring you understand not just how much the project will cost, but also when it will be completed.

Our basement building company takes pride in delivering structures that meet all current standards and legislation. By using sustainable and long-lasting techniques, we help you optimise the value of your home while maintaining high quality.

Costs depend on the size and complexity of your project. We provide a clear, upfront estimate so you know what to expect—no hidden surprises, just transparency.

Timelines vary, but we plan everything carefully to minimise disruption. Whether it’s a simple conversion or a fully fitted space, we make sure it’s completed efficiently.

Yes. We offer cost-effective solutions using modern techniques without compromising quality, so your investment goes further.

Absolutely. From initial design and planning to construction and finishing touches, we handle everything so the process is smooth and stress-free for you.

Limewood Builders offers a complete Design & Build package, identifying key design requirements and preparing a fully compliant design and programme of works. Our professional management ensures your basement conversion is completed to perfection. We’re so confident in our work that we offer a guarantee for an agreed period, with a responsive care service to cover your home long after the project is completed. Ready to create your dream basement? So, contact us right away and let Limewood make it happen.

Our Highly-trained and Expert Basement Builders in Portsmouth

All basement conversions in Portsmouth are undertaken by our fully qualified and experienced specialists. Our qualified project managers and engineers oversee our work, ensuring that your project is in expert hands from start to finish. As a trusted basement building company, we are committed to providing a comprehensive service that meets your needs. We incorporate modern construction techniques and use superior damp-inhibiting materials to ensure that your basement meets all necessary building regulations for a habitable room. As experienced basement builders in Portsmouth, we ensure minimal disruption throughout the project. Most of the work is done without entering the main part of your home, so there’s very little mess or disturbance, making things easier for you and your neighbours.

Minimal disruption is our priority. Most work is done without entering your main living areas, so mess and disturbance are kept to a minimum.

Yes. We use the right insulation, ventilation, and damp-proofing to make sure your basement meets all regulations and is comfortable year-round.

We offer a guarantee and responsive care service, so you can enjoy your new space knowing we’re here if you need support.

Our qualified project managers and engineers manage every stage to ensure your basement is completed safely, efficiently, and to a high standard.

Our Comprehensive Basement Conversion Process

We believe that the success of a construction project significantly depends on how well-organised the process is. And that is exactly why we try to keep everything as simple as possible from the very first. For high-quality basement conversions, our professional and sincere team follows a few simple steps.

  • We carry out a thorough assessment of the existing space.
  • Our basement builders in Portsmouth carefully consider the potential impact of the design.
  • Consideration of adjoining properties, including any matters arising from ‘The Party Wall Act’.
  • Our experienced team handles all necessary planning permissions.
  • We create a detailed construction programme that is both realistic and achievable.
  • Safety is a priority, and we conduct a comprehensive risk assessment.
  • Our basement conversion experts in Portsmouth prepare and administer the contract from initial planning to completion.
  • We provide a transparent costing structure, including detailed elemental breakdowns.

Take Inspiration from Our Past Projects

People from Portsmouth and Southampton trust us as their best local and custom builders for hire because of our excellence in this field. Light-filled home extensions, characterful loft conversions, modern kitchen renovations, thoughtful house refurbishments, and more- all these showcase our skill, innovative ideas and dedication to creating something extraordinary. So, take a look at the images for more inspiration.

These projects show what is possible when you can rightly balance creativity and quality craftsmanship. No matter what building construction services you need in Portsmouth, Southampton, and the nearby areas, we can handle all with great efficiency. Our work demonstrates how thoughtful design and careful execution can transform any space into something truly special. Who knows, your home could be our next masterpiece!

Absolutely! Our Gallery showcases a variety of full-house renovations we’ve completed in Portsmouth, Southampton, and the surrounding areas. Each project highlights our dedication, passion, creativity, and commitment to our work. You can explore these stunning transformations in our Gallery page. So take a virtual tour of it.

There is a lot you can do with a house extension. In Portsmouth, we have created everything, like sleek modern open-plan extensions and traditional brick-built designs that blend perfectly with the existing home. Our Gallery has plenty of examples that will inspire you to expand your space without losing style or personality.

Maximising space in smaller bathrooms is one of our specialities. Even the smallest bathrooms can be turned into smart, stylish spaces. In our projects around Southampton, we’ve used clever layouts, compact fixtures, and smart storage solutions to make the most of tight areas. Check out our portfolio to see how small bathrooms can be practical and beautiful, too.

You can see past projects by builders in Portsmouth by visiting our gallery page or project portfolio online. These usually show completed extensions, loft conversions, and renovations with before-and-after photos. It’s a great way to get inspiration and see the quality of work, design ideas, and attention to detail that we bring to every home.

What Makes Us the Most Trusted Builders in the Area

We Are ISO Certified

We are proudly ISO certified, demonstrating our commitment to quality, safety and excellence. This accreditation ensures that we provide customers with a reliable service to the highest industry standards across Southampton and Portsmouth.

We Are Local

We are a trusted local builder proudly serving Southampton and Portsmouth, delivering exceptional home extensions, loft conversions, and basement projects with personalised services, expert craftsmanship, and a deep understanding of the community.

Many Happy Clients

We are valued by many homeowners across Southampton and Portsmouth for our professionalism, reliability, and lasting results.

So, if you are ready to hire trusted builders from our construction company, connect with our team and get thorough guidance for your project.

Our clients say it best. With great reviews on Google, Yelp, and HomeStars, people in Portsmouth, Southampton, and beyond confidently hire our builders for honest, reliable, and high-quality construction work. We feel so proud that we can make any project a positive experience. Hearing from happy homeowners reminds us why we do what we do, and it inspires us to keep raising the standard on every job we take on.

It’s quite easy. Just search for “Limewood Builders Portsmouth” on Google, and our profile will come up. There you can read what our clients have said about working with us, see ratings, and even check out photos of some of our completed projects.

Yes, we are on Yelp too. Just head to Yelp and search for Limewood Builders, and you’ll find honest reviews from customers in Portsmouth, Southampton, and the surrounding areas. It is a good and genuine way to hear real experiences and see the kind of work we do.

On HomeStars, we are glad to share that clients have given us over 4.5-star ratings for projects such as loft conversions, basement refurbishments, house extensions, and many more. Alongside the reviews, you will also see photos of our work, which show the care and detail we put into every build. It is a simple way to get a feel for how we work and why so many homeowners are happy to recommend us.

Hear from Our Happy Clients

We are so proud and honoured that people always choose us when they want to hire a builder in Portsmouth and Southampton. Whether you need expert building contractors for hire for a loft conversion, home extension, or a complete remodelling, we handle all. The skill, care, and innovative ideas we bring to every building and renovation project we take on set us apart. Don’t just take our word for it. Hear from our clients who have worked with our best renovation contractors in Portsmouth and Southampton for hire and experienced the difference. Their words say it all.

Emma Harding

Limewood Builders completely transformed our old kitchen. From the design to the finishing touches, everything was perfect. Our renovation was stress-free and beautifully done!

James Fletcher

We needed extra space for our growing family, and Limewood Builders made it happen. The home extension looks like it was always part of the house — brilliant work!

Sophia Reynolds

The loft conversion gave us the extra bedroom we needed without moving house. The team was professional, tidy and the results exceeded our expectations. Couldn’t be happier!

Liam Bennett

Our kitchen was outdated, but now it’s the heart of our home. Limewood Builders understood our vision and brought it to life. Quality craftsmanship and outstanding service!

Charlotte Mitchell

After the flood, we were overwhelmed. The team of Limewood Builders handled everything — from repairs to restoring our space. Their support and expertise made all the difference. Highly recommend!

Oliver Chapman

Our unused garage is now a stunning home office. Limewood Builders guided us through every step of the conversion, making sure we got the most from the space. Superb job!

Hannah Cooper

We finally got our bathroom sorted, and I honestly can’t stop looking at it. The team was so easy to work with, and they didn’t fuss about the little changes we asked for. Everything feels bright, fresh, and really us. 100% satisfied!

Ethan Davies

Got a small extension done for our living area, and it is incredible. The builders from Limewood were friendly, worked around our schedule, and didn’t throw any tantrums about anything… that many famous builders do. It just feels like the house has always been this way. Can’t thank them enough.

Lucy Palmer

Our loft is now the cosiest place in the house. The team were proper friendly, explained everything, and didn’t leave a mess behind. We’re so happy with how it turned out… feels like a whole new home.

Tommy Reid

Had our kitchen and dining area knocked together, and wow, what a change. The work was quick, neat, and exactly what we hoped for. The team really listened, and it feels like the heart of the home again. Hands down… the best!!

Megan Foster

We wanted a small office in the garden, and they made it happen perfectly. They were approachable, easy to chat with, and really got what we needed. The finished space is way better than we imagined. Totally recommend them!

Daniel Hughes

Had our upstairs bathroom renovated! And it looks amazing now. The builders were mostly on time and helpful, though a few things took longer than expected. Overall, really pleased with the result, and the work quality was definitely top-notch.

Frequently Asked Questions

A basement can become almost anything you want. A cosy living room, a cinema room, a gym, or even a guest bedroom. We help you plan the space properly with the right layout, comfort, and safety, so it feels like a natural part of your home.

Most of the time, you do not. But some properties have special rules. We take care of all those checks for you and guide you through any permissions needed, so you can relax and enjoy the progress without stress.

Do not worry, that is what we are here for. We chat with you about how you want to use the space, then help shape a design that fits your lifestyle. From lighting and storage to the final look and feel, we make sure everything works beautifully.

Yes, we can. Whether it is reinforcing walls or making sure the floors and foundations are secure, we handle all the technical structural bits safely and professionally, so your space is solid and built to last.

Yes! We use the right insulation, ventilation, and damp-proofing so the space feels warm in winter and stays fresh in summer — perfect for everyday use.

It is very simple. Just contact us for a friendly chat. We take a look at your space, discuss your ideas, and give you a clear plan and cost so you know exactly what to expect.

What Else We Can Do for You

Home Extensions

Our professional house extension service is ideal if you want to expand your living space without making many changes.

Yes, absolutely! Whether you want to add a single-storey rear extension or a larger multi-storey project, we can guide you from planning to completion. Our team ensures your extension blends seamlessly with your home and meets all necessary building regulations.

We provide a full house extension service, including design, planning permission advice, building regulations compliance, construction, and finishing touches. Our focus is on creating functional, stylish spaces that enhance your lifestyle and add value to your home.

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Loft Conversions

Ready to convert your loft into a functional space? Consider a professional loft conversion and experience the transformation.

Definitely! We specialise in transforming unused lofts into practical and stylish living spaces. From bedrooms and offices to entertainment rooms, we handle everything from design to construction. So the entire process remains simple and stress-free for you.

Our loft conversion service covers design, structural assessments, planning advice, construction, insulation, and finishing. We focus on maximising space, natural light, and usability. So your loft becomes a comfortable, functional, and valuable part of your home.

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Property Refurbishment

If you want to give your property an overall makeover for long-term benefits, property refurbishment is for you.

We provide full property refurbishment services, including interior and exterior upgrades, kitchen and bathroom renovations, rewiring, and structural improvements. We breathe new life into your property to improve both aesthetics and long-term functionality.

Of course! Our refurbishment service transforms homes with careful planning, attention to detail, and high-quality craftsmanship. We work on every element of your property to ensure it meets your needs, modern standards, and personal style. So, at the end, you can get a refreshed, comfortable, and practical living space.

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