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Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!
Mary
George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!
Dmitry
Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.
Holly
Find everything you need to know about hiring a local cellar conversion specialist. Extend or renovate an existing basement, or excavate a new one from scratch. Below, we cover tips to help you find a basement conversion specialist:
Browse Cellar & Basement Conversion specialists
Take a look at our Cellar & Basement Conversion specialists profiles, read reviews and request quotes directly.
How to find a reliable, local basement conversion specialist
A basement conversion has the potential to add a lot of value and space to your home. Once your team excavate your new basement, you can turn it into a bedroom with an ensuite bathroom, a new gym, a living room, or any other living space.
Transform your underground spaces into useable rooms with the help of a skilled cellar conversion specialist in your local area.
What does a cellar conversion involve?
If you already have a basement, then you might be looking to turn it into a liveable space by adding structural supports, damp-proofing, insulation, heating, and a new ventilation system. If your cellar was intended for storage and has low ceilings, your basement conversion team might have to dig down to increase the head height before they can add things like new plumbing and electrics.
Or, you might be thinking about extending your current basement, such as by digging underneath your garden. This is another great way to add more space and additional rooms to an existing basement.
If you don’t currently have a basement, you can also create a new one by carrying out excavation work. As well as the basement, you’ll also need a new staircase.
Whether you want to build a cellar from scratch or want to turn your cramped storage room into a brand new living space, a basement conversion specialist can help.
Factors to consider before hiring a basement conversion specialist
On average, a basement conversion can take anywhere from 12 to 20 weeks to complete. Avoid stress and costly repairs down the line by hiring a skilled specialist to help you upgrade your home. Look out for basement conversion installers that:
- Are a skilled company with a strong history of high standard projects
- Have all the licenses and insurance needed to protect you and their workers
- Have a good range of positive reviews from previous customers vouching for their reliability
- Are available to carry out the work in the timeframe you need it by
- Are quoting a price and payment option that you are happy with, having compared the quote with other basement conversion companies
A local basement conversion specialist is more likely to respond quickly as they’ll be right around the corner and ready to help.
How much does a basement conversion cost?
If you don’t have space for a rear or side extension, and don’t have a loft to convert, then a basement conversion is a great option to maximise your home’s space. How much you’ll end up spending on your basement conversion depends on a range of factors, including:
- The size and layout of your basement
- How many structural changes will be needed, including extra support beams and underpinning
- Waterproofing and damp proofing costs, as well as the installation of effective drainage systems
- Whether you want a window well installed, which can help you introduce light into your basement
- Basement insulation and soundproofing
- Labour costs, which are affected by where you live in the UK
The average basement conversion costs between £120,000 and £160,000. For a more accurate quote for your specific project, speak to a basement conversion specialist today.
Do I need planning permission for a cellar conversion?
You won’t need to apply for permission for a cellar conversion, as long as:
- You’re converting an existing residential basement into a living space
- How you’re using it isn’t significantly different and the basement isn’t a separate unit
- You don’t alter the external appearance of the property, such as by adding a light well
- You don’t live in a listed building
Excavating a brand new basement which involves major works is likely to require planning approval.
For more information, contact your local planning authority or visit the Planning Portal website. You can also read our planning permission guide for more information.
Questions to ask before you hire a basement conversion specialist
Whether you’re looking to build a brand new basement or simply want to extend or improve your existing cellar, there are a few questions you should ask before you hire a specialist to excavate your new room:
Do you have public liability insurance and what does this cover?
While it’s not a requirement for them to have it, it’s a good idea for your basement conversion specialists to have public liability insurance to cover you and them against any accidental damage done to your home or personal injuries. Make sure to always ask your tradespeople what insurance they have before you hire them. This will guarantee protection for both parties.
How many years of experience do you have?
Knowing how many years of experience your basement conversion specialist has will allow you to pick a tradesperson who you are confident has enough experience to carry out a high quality job. When you’re finding a tradesperson through Rated People, head over to their profile to check out the pictures on their work gallery and their ratings and reviews.
Do you use subcontractors? If so, are they licensed and insured?
Your basement conversion specialist is likely to employ subcontractors. It’s a good idea to confirm the qualifications and insurance coverage of everyone who will be working on your project, including surveyors, structural engineers and electricians. Anyone working with gas needs to be registered with Gas Safe, and anyone installing electrics (in England and Wales) needs to be Part P certified to be able to self-certify their work. These tradespeople will have valid documentation that you can ask to check.
What is your estimated timeline for completing the project?
Knowing what the estimated timeline for completing the project is will help you set realistic expectations about how long your basement renovation will take to complete.
How much will the job cost?
Asking how much the job will cost will help you budget for your project and will ensure price transparency before you hire. How much you’ll end up spending depends on the scope of your project, and where you live in the UK, so make sure you add plenty of details when you post a job.
Over the years of being in the construction industry we pride ourselves in effectively carrying complete house renovations ,new kitchens and bathroom installations ,plastering, tilling, plumbing, painting and electrical works, consumer units,complete rewire, inspection and testing,and we Part P Registered under the NICEIC brand.
Sylvester arranged and managed the refitting of my kitchen - plastering, plumbing, cabinets, tiling. Even Replacing joists and floorboards (I had a wood worm problem). We could not be happier with the result and Sylvesters accommodating attitude towards much unexpected/unplanned work all carried out within quoted timeframe. Could not rate him higher! As an electrician he refitted a few of our lights and provided a valid certificate for all work done. Very professional and tidy.
Solutions for carpentry, design and build. Corrective and repair work. Assessment free of charge. Experienced and knowledgeable. Professionally managed. Insured. Reasonably priced. Also specialise in all door supply and fitting. I look forward to talking about your requirements.
Brilliant work! We were so pleased with Jon's workmanship and professionalism from start to finish! We are looking forward to working with him again and would not hesitate to recommend to others!
Ashco Contracts Ltd.
Cellar & Basement Conversion
30+ 5 Star Reviews on Google!! New to rated people Ashco Contracts Ltd is a family run building contractor serving the Essex and surrounding areas. The company is run by twin brothers Callum & Ash, who took the business over from family in 2015. Since then the business has has come along way and many hours have been spent on site and in the office to get the business where it stands today, which they are extremely proud of. A combined total of over 25 years in the construction industry, Ashco prides itself on repeat business and reputation. Weather it be a small repair job or a large extension you are in safe and secure hands with Callum & Ash.
Quick and professional
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We are specialised in Kitchen, bathrooms and all type of furniture instalation. We are team of handyman, plumer, electrician and carpenter.
Excellent Kitchen Tiling! Peter did an amazing job! Professional, friendly, and efficient, he completed the work quickly. The pricing was fair, and he kept everything clean throughout. Highly recommend for quality tiling!
Profesional service.. To many years to mention in business. And all work carried out 100% satisfaction guaranteed.
Excellent work and service, would certainly use again. Bill Walker
We are a family run business, and although new to the Rated People website for 2024, we have gained over 25yrs of knowledge and experience in dealing with damp and mould in properties. Understanding the issues these cause, we know how to fix them while keeping within a reasonable budget. There are numerous ways these issues arise and we take our time to survey your property to find the cause, advise you on the cure, and help you to have a dry, healthy home. Contact us today to find how we can help you. We cover all of Merseyside and surrounding areas, and can survey your property for you, within a few days to a week. We are certified installers of the damp and remedial products we use and have completed the Pam Ties and Safeguard Damp proofing course, to give you the peace of mind that all our work is undertaken correctly and to the required accordance with British Standards using fluid, approved by the BBA and we adhere to the code of practice laid down by the British Standards Institute. We can undertake any instruction, from an independent damp, timber and mould survey which will be approved by your mortgage lender, right through to a full damp course, wall tie replacement, brickwork pointing, Mould sanitisation, timber replacement, basement tanking and also wall insulation. We have also experience in full property refurbishments and project management of large conversion projects and have numerous trusted tradesmen who have worked for us for decades. Should you require any other jobs doing, please just ask. Check out our excellent 5 star Google reviews to see that we care about our customers and make sure we turn up when we say, do what we quote, and leave your property in a clean tidy state. Call us today to fix your damp and mould problems!
4 months?Done the job feb, rang you march, you gave advice and we put 2 fans on the wall for a month and rang you back to say wall didn’t dry. I’ll post all the photos up of the job including the rusted beads and beads put over the top by your lazy plasterer and let’s remember I said cancel your plasterer when you didn’t do the job I thought you were doing and pay you just for what you done. The evidence is there for people to decide
We are a family run buisness that originated in Lincolnshire. We have relocated to the Kent area and have a fantastic skilled team of builders, carpenters, electricians, landscapers and many more. We thrive on perfection, quality and value for money and will share our knowledge and expertise with you.
Fast and efficient service. They gave me good advice, completed work immediately and left the property clean and tidy. I would highly recommend this company.
We are a general building and maintenance company. We cover all aspects of building from small maintenance items to full refurbishments, conversions and extensions. We have over 30 years experience and all our operatives are time served tradesmen. We pride ourselves on our quality of work and always price competitively. No job is too difficult and we specialise in structural work, composite walls, dry rot and other challenging jobs which we will execute and resolve at an extremely reasonable cost. We also attach a 'no quibble guarantee' on all our work for your peace of mind. Although we are geared mainly to commercial customers we welcome residential homeowners as well. Please feel free to email me or call me and I will be happy to discuss your requirements with you. We offer free estimates, are fully insured and can provide references if required. Andrew Truby Company Director AVT Building Solutions.
Much care was taken to replicate the original porch - an excellent job.
THE GCD GROUP LTD
Cellar & Basement Conversion
GCD Developments is a multi-disciplinary property practice, covering property development, project management, architecture and interior design across London and United Kingdom. Whilst every project is unique, the philosophy behind each is unwavering: at GCD we strive to craft environments which are not just beautiful, but faultlessly functional.
Danny General Builders specialises in structural work, extensions, refurbishing, loft conversions, roofing, fitting bathrooms and kitchens, and painting and decorating. All employees have more than 10 years experience and are insured.
Danny did an absolutely great job with my set of alcove shelves. He was friendly, diligent, extremely polite and did an excellent job. Highly recommend
hello I have 15 year in the trade I am a multi skilled tradesmen who takes pride in what I do I love my job I work on a basis you not happy with my work you don't pay simple as that I am fully insured and vetted
Top class service really friendly people ..love our flooring thank you very much we will use again.
Top Line removals & clearances
Cellar & Basement Conversion
Check out our face book page toplinesprayers uk !!!!
London City Roofing & Renovations ltd is an established and trusted company with over 20 years experience, offering all aspects of roofing and building services. We are based in Wembley (London) serving all of London and surrounding areas within 100 miles.? We pride ourselves on our punctuality and quality workmanship, offering a prompt and professional service with experienced and expert staff. We guarantee a friendly, clean and tidy service with all work being to the highest standard. We are fully insured and all work is guaranteed. All our tradesmen are experienced and qualified in their respective trades. We specialise in the following: Roofing services: UPVC Fascias & Soffits Cladding Guttering Bargeboards Flat Roofing Chimney Repairs Tile & Slating Work Re-Roofs Lead Work General Building Work Fibre Glass Roofing Double Glazing Building services: Home improvements Kitchen Fitting Bathroom Fitting Extensions Loft Conversions Garage Conversions Bricklaying Plastering Comprehensive driveway and paving service, including: Driveways Drop Kerbs Patios Paths Block Paving Concreting Tarmacing Car Port We offer free quotes
John and the team did an outstanding job. It was easy to work with John and he was very knowledgeable, and provided very sensible advice. Other people quoted work which was over-the-top or wouldn't have solved the problem but John got right to the issue in a no-nonsense way. Quality of the work undertaken was very good, considering the age of the building and complexity. Would recommend.
Roman home improvements is a company who pride them selves on high quality workmanship at affordable prices. We have over 20 years experience and cover all aspects of construction. We are here to not only build for your needs but with our experience and knowledge to help design for your needs.
Prompt response and quote. Options fully explored and explained. Work starts soon.
Here is a description about my company testing 2 updating just testing
Test without the bad word
We are your trusted experts in comprehensive building & maintenance services, offering a wide range of solutions to meet all your needs. From minor repairs to large-scale projects, we’ve got you covered. Our skilled team specialise in all aspects of construction, including plumbing, boiler breakdowns, emergency call-outs, and gas safety/boiler services. We also excel in joinery work, handling both minor repairs and major construction projects, from kitchens to full house renovations, extensions property refurbs. In addition, we provide all aspects of plastering services, encompassing repairs, full-house projects, damp course works, external rendering, and k-render applications. Roofing is another of our specialties, with services ranging from repairs to complete house renovations. When it comes to electrical work, we take care of it all, from repairs and installations to full re-wires, EICR certificates, and remedial works. Our skilled painters and decorators, who are part of our dedicated team, ensure your space looks its best. We also offer EPC certificates and guarantee that all our work meets the necessary standards. For those looking to transform their homes completely, we offer full house renovations from start to finish. Landlords benefit from our fast turnaround times, ensuring their properties are ready for sale or back on the market promptly. All major works and extensions come with our comprehensive guarantee. Choose us for your maintenance needs, and experience quality service from start to finish. List of services Joinery Plumbing Expert painting and decorating Plastering all aspects Roofing works Electrical works Property maintenance Bathroom refurbishment Kitchen refurbishment Full property refurbishment Extensions and conversions Fire door checks sign off Minor or major repairs Planning and a full schedule of works with all quotes.
Our company Construction and Renovation work of 25 years. At this time, we have gained a wealth of experience backed by references received from our customers. Cost estimates are free of charge. Professionalism guaranteed.
Greg is a very helpful and professional. Arrived when he said he would and gave sound advice on a very tricky guttering problem.
INPROJECT CONSTRUCTION LTD
Cellar & Basement Conversion
WELCOME INPROJECT CONSTRUCTION - Building your future, one brick at a time. We have completed numerous projects, from small renovations to large commercial constructions. Our portfolio includes residential and commercial buildings, educational and healthcare facilities, and industrial constructions. Our mission at INPROJECT CONSTRUCTION Ltd is to provide our clients with exceptional construction services that exceed their expectations. We are committed to delivering high-quality workmanship, on-time completion, and cost-effective solutions. What sets us apart is not just our ability to construct buildings but our commitment to building relationships. We believe in honesty, integrity, and transparency in all our dealings with our clients. We value teamwork, professionalism, and continuous learning and improvement. We prioritize transparent communication, ensuring that our clients are informed and involved at every step.
At Optimal Finishes , we understand that choosing a contractor is a big decision. That's why our team of specialists and multi-skilled tradesmen is committed to delivering high-quality work with integrity for over 25 years . With a strong record of positive reviews from satisfied customers, you can confidently rely on us. We provide clear, competitive quotes and stick to them—no surprises. We proudly accommodate services for both residential and commercial clients. Our services: -Painting Interior and Exterior Painting Mould and Damp Control -Flooring Installation Laminate, Vinyl, Hardwood, and Engineered Flooring Removal and Installation. Underfloor Heating Herringbone -Tiling Wall and Floor Tiling Splashbacks Tile removal and replacement Bathroom installation Exterior tiling Wet room installation Underfloor heating Swimming pool tiling -Carpentry Bespoke Furniture and Fixtures Doors and Windows Staircases Kitchens -Plastering Decorative Cornicing / Plasterwork Dry Lining & Plasterboard - Installation and Repair Internal & External Rendering Plaster Skimming Polished / Other Plaster Finish Screeding/ Standard Coving -Roofing Chimney repair Clean gutters Roof cleaning Flat roofing Gutter installation and repair Pointing Roof inspection, Installation and repair Solar panel installation Why Choose Us: Our team is passionate about delivering great results. With a 9.8/10 rating from local customers, we take pride in our reliability and quality. We know every project is unique, so we work closely with you to make your vision come to life. Using top-notch materials, we ensure a beautiful, long-lasting finish. Plus, we value your time and strive to complete every project on schedule, making the whole experience as smooth and enjoyable as possible! Ready to transform your space? Contact us for a free quote within 24 hours. Let's discuss your project, and we'll provide you with a detailed estimate.
Great team, great work, brilliant service. I asked got my daughters room to get split with a partition wall and they done an amazing job. They was thorough, fast, great work. Really polite, great communication and would definitely use for future work
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