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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.
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Pocock developments has been trading in and around Berkshire and the home counties for some 30 years with great references. its a family run business with myself and my wife Kerry. We Produce fixed price quotations. we are Elecsa certified.
Spencer at Pocock Developments project managed our work very well. From the fully detailed quote, to advising on any pricing changes and providing some extra plastering work - got to say everything was managed smoothly and transparently, and the one hiccup over the roof tiles was put right quickly. Plus we appreciated Myron and Ivan's eye for detail and managing their work around the weather. Our two dormers look great, so thanks Pocock Development and we'd definitely use them again ????
Over 20 years' experience High standards of workmanship Fully qualified team of builders and joiners Associated with the Apprenticeship scheme of the Construction Industry Training Board Competitive pricing Free, no obligation quotation
Work done to ery high standard by skilled tradesman Delighted with the result
Martons Building Contractors
Cellar & Basement Conversion
Martons Building Contractors is a trusted name in construction, known for our problem-solving skills, attention to detail, and innovative designs. Our mission is simple: to exceed the expectations of every client we serve. We offer a range of services including conversions, extensions, groundworks, new builds, and roofing. With a combined experience of over 100 years, our team of 5-6 professionals ensures that every project is executed with precision. While our core team is small, we have a network of reliable subcontractors for electrical and plumbing work. Based in Leeds, North Yorkshire, and Lancaster, we are dedicated to serving these areas with quality construction services. Choose Martons Building Contractors for reliable craftsmanship and a commitment to excellence in every project. All contracting works available and covered in and around Yorkshire.
We are a very reliable team who can always solve your problems. No job is to big or small With competitive pricing we are affordable And we always listen to our customers needs so we can help them the best way we can
Guttering repair Friendly team explained the work to be done work done same day good price for work
My name is Louis Tabone, I am 56, and I have more than 35 years of experience in building, joinery and I have many different skills in home improvement. I fit bathrooms and kitchens for B&Q department. Also I do loft conversions and extensions, fences, decking and all the house renovations. All my customers are very happy with my job, as they have guaranty on all job done. Team of 5.
RATED PEOPLE LIMITED
Cellar & Basement Conversion
27 years experience a company you can trust,leave nothing to detail.
Steve replaced our guttering, downpipes and a bargeboard. It wasn’t a straightforward task as it’s an old property but he did an excellent job and carried out the work quickly and efficiently at a competitive price. I would highly recommend him.
30 years plus of experience, all general work carried out. Clean and tidy worker always reliable.
came to quote, sent a quote through, arranged a day to start the work and never turned up. We rearranged the date, he turned up, had a cup of tea, left to get materials and never came back. Now not answering my calls.
Simicus Construction LTD
Cellar & Basement Conversion
This is Simicus Construction Ltd, we are a team of builders with over 20 years of experience in the Construction Industry.
J4H Civil Engineering Ltd is a trusted company providing a range of property maintenance and home improvements for domestic and industrial customers in Feltham, Middlesex, West London, and the surrounding areas.
Delighted with the service received from this company. Completed the job to quoted budget and well within the maximum timeframe quoted including doing some extra work (painting hallways, replacing spotlights) that weren't in the original job. Everything looks really good, and I wouldn't hesitate to recommend them.
Plum Building Services Ltd is a building company based in London. We work for both landlords and private home owners on new builds, extensions, refurbishments, repair and maintenance. No job is too big or too small. Quality is our guarantee.
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!
Thank you for reading our profile. We have over 20 years experience in all aspects of Roofing, from small repairs to a full new roof. We really do care about all our customers and take pride in our work . We are hard working, punctual and honest.
We are a small family run company that cover all aspects of the building trade, with over 40 years experience. A member of the FEDERATION OF MASTER BUILDERS so our work is monitored and trusted. Our range of work ranges from repointing a wall to newbuid.we have a great team and cater for all aspects of building,renovating and repairing, giving your home the loving care it deserves. TRUSTMARK APPROVED FOR GREEN HOMES GRANT We also now do Corksol spray coat rendering in many colours. Look it up it’s a fantastic product
Great job, Ian and his team are super friendly team, very flexible and able to adapt as the project unfolds. I highly recommend them.
Excellent time served Plasterer with 16 years building experience all over the UK .No job to small and always to highest standard possible. Experienced with:Skimming,Boarding,Damp proofing, wall removal (Steel work), extensions, Rendering, roofing, tiling, bathroom fitting Coving,brickwork , joinery. All work is guaranteed . Give us a call for your free quotation
Brilliant job! Shaun and his team were very punctual arriving early doors and worked non-stop. Did everything we asked for to a very high standard nothing was a bother. Lovely group of lads who we'd highly recommend! Thank you!
I primarily work on all aspects of kitchen and bathroom fitting from fitting to services. However I have a long history of multi-trade work having completed high spec extensions throughout the years, no job is too small. I carry out property maintenance which involve carpentry plumbing and electrics as well as refurbishments all within the latest regulations.
Pleasant polite tidy, carried out work quickly and efficiently
As a professional and hard-working company, Apexcpm offers a high-level service with a dedicated focus on communication and results.We put our clients first,ensuring our work is carried out with precision and consistent professionalism.Our services include renowned property renovations,garage conversions,kitchen refurbishments,fitted wardrobes,custom designed furniture and much more! Fully qualified with NVQ level 3,qualified & experienced tradesmen who are Gas Safe & NICEIC-approved. Established in 2018, we’re an Uckfield-based family-run business & together,we share over 30 years of experience in the trade.We have an extremely high number of 5-star reviews online, and our testimonials speak for themselves.We are also lucky enough to have a considerable amount of recommendations and referrals thanks to our reputation as a reliable, knowledgeable and highly skilled company.
Welcome to HOME IMPROVEMENT PROJECTS & SERVICES (HIPS HOMES) Ltd, where excellence meets integrity. We offer a wide range of construction services, ensuring quality and efficiency in every project. Discover our outstanding reviews and let us help you make hips of SAVINGS on your budget, add VALUE to your property, and enhance your own and or your tenant's COMFORT. #HipsHomes #HomeImprovement #TrustedBuilders #QualityCraftsmanship
Ernest is a very hardworking tradesman. He replaced locks for us.
We are at your disposal to help you with Leo pop construction property maintenance Ltd We arrange tiling works, gardens, paving and other interior paint?ing and exterior jobs .
Leo did a great job. Happy with his work,
Eley Plastering are a trusted, professional business with over 16 years experience. We pride ourselves on our quality workmanship and our attention to detail. We offer exceptionally high standards at very competitive prices. All work is fully guaranteed.
We hired Eley Plastering for some Render work and our home now looks beautiful. Very happy with the outcome. Robert was professional and reliable. We have contracted them for further work throughout the summer to further improve my home. Would recommend to anyone.
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