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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.
An accomplished business where customer needs comes first. We are a dependable team with 25 years experience. Our aim is to attain positive communication with our customers as well as providing reasonable prices for all our clientele. Our specialties expand to various qualities, and we are profoundly able in achieving and carrying out plastering and rendering, painting, boiler installations, unvented cylinders, gas safe checks, bathroom renovations and all home improvements. Collectively, our main goal is to ensure our customer is content and that our work reaches their full expectations.
An appointment was rearranged for Lewis and his Adrian to come and give me a quote for my driveway. They arrived on time.
Over 15 years in trade Fully qualified gold ECS CARD Managers black card ESC CARD Very honest and reasonable prices
STANART CONSTRUCTION LIMITED
Cellar & Basement Conversion
????? Service Introduction – Carpentry & Roofing STANART Construction Limited Hi! My name is Stan ,and I lead a skilled and reliable team with 12 years experience in carpentry and construction work We provide complete, high-quality services for both small and large projects, indoors and outdoors. Our specializations include: ?? Carpentry work – doors, windows, stairs, custom furniture, terraces, pergolas, wardrobes ?? Roofing – full roof installation, repairs, renovation, timber framing, tiles/shingles, gutter systems ?? Organized, well-equipped team – ready to handle complex projects to a high standard ?? Punctual, clean work and clear communication throughout the job CSCS Level 2
Hello, My name is Michael, the owner of m p e building services est 2000, I am a fully qualified N.V.Q joiner and builder, time served craftsman who specialises in woodwork, wet trades, plastering, tiling, and brickwork/stonework including Indian stone and concrete paving, I have over 25 years experience in the construction industry, and I have all the skills and knowledge to complete your project, I am reliable friendly and honest. The photos are of my personal works which are displayed on this page, are just a tiny collection of the many successful projects I have completed for my many happy customers over the years, I have a full portfolio of photos of building projects that I have completed and lots of real excellent customer references and personal recommendations of my business, that I can provide and can show on appointments when quoting for new customers.
Arrived on time every day and built the doors on site. After which they were installed and painted. Very pleasant and respectful personality. Photo of finished job available if required.
Eco Home Property Services
Cellar & Basement Conversion
Eco Home Property Services is a professional multi-trade contractor and a new branch of Eco Home Insulation, established to provide reliable, high-quality solutions across residential properties. We cover a broad range of services including insulation, heating and plumbing, electrical work, plastering, joinery, and general property maintenance. We are committed to delivering a consistent standard of workmanship, with clear communication, organised scheduling, and a clean, respectful approach in occupied homes. With competitive rates, transparent pricing, and a focus on delivering work safely and efficiently, we’re a trusted choice for homeowners, landlords, and property managers seeking a dependable team for both reactive jobs and planned works.
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
CFL Joinery & Construction Fully qualified Level 3 Site Joiner/Carpenter (City & Guilds) with many years of hands-on experience in the trade. At CFL Joinery & Construction, we combine expert knowledge, precision craftsmanship, and a genuine passion for delivering high-quality results on every project. Due to continued demand from returning clients, CFL Joinery is expanding to provide a wider range of construction services, including electrical installation, plumbing & gas, bricklaying, and more — offering a reliable, one-stop solution for your project needs. All work is completed to a high professional standard, often at competitive prices that beat previous quotes. We pride ourselves on being friendly, reliable, and approachable, and we always do our best to accommodate urgent or time-sensitive work. For enquiries, advice, or quotations, please get in touch by phone or email — we’re always happy to help
Arrived on time and did an excellent job would highly recommend Chis
Full property maintenance Handy man no job to big Painter & decorator Kitchen fitting r Bathroom fitting Tiles fitted Full house refurb HMO conversion
Absolutely 1st class response by Harj & his team to some very challenging works. Cannot recommend highly enough for any domestic or commercial projects. Good value, reliable, always polite & goes the extra mile to deliver the highest quality.
John McKinney Builders have been building on over 50 years of experience, established in 1970. We carry out extensions, loft conversions, refurbishments, garage builds & conversions , kitchen fitting , heating etc. From planning to completion. Our quality of workmanship & finish is second to none, no snagging needed or call back. WE SPECIALISE IN THE INSTALLATION OF RSJ,s
Plumbing, groundwork and Underground water services At gcb utilities we strive to provide our customers with a high quality end to end service. we know it can be stressful dealing with leaks, repairs and improvements But with our expertise and professional staff we get the job done in good time and with as little disruption to you as possible. From the first contact our friendly staff have you covered. Whether your looking for a leak fixing,you have pressure issues, need pipe work installing or moving, new water supply or external leak repair With our wiaps, chas,constructionline and water safe approval, guaranteed work your in safe hands Give us a call or message for a free no obligation quote
Enthusiastic to sort-out our problem. Planned to meet and it happened bang on time. Came-up with the solution and had the job done within their own time estimate.. Problem solved on time and around the estimated budget. Well done!
HEX360 was founded in 2015 by Craig Lewis with the solid foundation that a degree in construction management provides. Before launching HEX360, Craig’s former life saw him working at Princess Yachts, where he founded his skills and acquired his particular attention to detail – but if you’ve reached this page, you probably aren’t interested in hearing Craig’s life story… you’re really interested in finding out what makes HEX360 different to all the other construction companies out there. So read on and discover our difference. Working with most construction companies can feel a bit like finding your way in the dark – you just don’t know where to go to get the information you need. The stereotypical construction company that makes matters so confusing and complicated that everything they say goes over your head is, unfortunately, not just a myth. They’re out there, and they’re confusing clients as we speak. So, it’s no wonder that so many people put off their project or come to a grinding halt partway through – after all, it can all feel just too overwhelming. Luckily, HEX360 is here to change your perceptions and prove that not all construction companies are the same. We’re dedicated to working with you, not for you, and that means taking a collaborative approach right from the get-go. With our 8-step process, we’ll clearly outline every stage of your project so you won’t feel overwhelmed, and thanks to our use of in-house project management software, you’ll have complete transparency for every aspect of your project. We are committed to flexibility, accessibility, and approachability so your project can run smoothly, whether you’re updating your kitchen, renovating or extending your entire home or developing a large commercial property. You’re more than a number on a spreadsheet to us, and we never bite off more than we can chew. Our attention and efforts are solely dedicated towards you and your project during your time with us. Unlike with some construction companies, once we begin work on your project we don’t simply move on to our next. We provide industry leading account management during the full life cycle of the project, meaning you aren’t forgotten about once you sign on the dotted line.
i would like to add this group of workmen are the best i have seen for a long time.they are prepared to go above and beyond to ensure a professional and efficient project is completed. Above all they are honest ,trustworthy and obliging in every way. Highly recommended.
LITA CONTRACTORS LTD We are a family owned construction company with over 10 years of successful commercial and residential building projects. Based in London, we help clients with all kinds of construction needs, with existing plans or brand-new designs and solutions. Some of our services include: - Ground work - Drainage - Basements - First Fix & Second Fix - Kitchen & Bathroom Fit Out - RC Frame & Steel Frame We are specialised in delivering reliable and best quality services that will last a generation.
Calling via the Rated People phone link button is the best way to make contact for a same day reply and lowest prices, call during November for a 25% discount on all quotes, offer ends November 30th If I miss your call, leave a message or text and I'll call you back on the same day Quotes can be given via pictures, and all payments can be made via bank transfer upon completion of all works. With over 25 years’ experience in the plastering, building trade and 10+ years of Rated People positive feedback, I provide a first-class service, including damp proofing, soundproofing and complete bathroom/kitchen and home renovations from start to finish
Excellent work from Sean who shines 5 ceilings for us. Lovely finish and very clean work.
At Right Fix Home Developments you can rest assured as we provide the highest of standards. We have over 10 years experience working with contractors on building sites and direct to customers for all aspects of home improvements. "NO JOB TO BIG OR SMALL"
Hi,my name is vathi and i am a hardworking, well-organized and experienced handyman with a keen eye for details,physical stamina and apt in problem-solving.Moreover,i perform various repairs and maintenance tasks, including appliance installation, routine landscaping on the grounds and carpentry
beautiful work done installing engineered wood. initially planned for installation of engineered wood by floating it. had to switch over to gluing due to the product i had got. still ended up completing 2 days worth of work in a single day. will definitely hire again.
18+ years of experience. Providing services, ranging from electricity, plumbing, home extension and more. With fully trained and experienced workers, ensuring quality everytime.
The entrance door to my flat needed to be adjusted to meet fire regulations. I was really pleased with the result. Mani is a skilled man who worked with care and attention to detail. He made sure that the finish was good and thoroughly cleared up afterwards. He was also courteous and clearly explained what he was doing.
GJH Joinery services Ltd is a trusted, family-run joinery business with over 30 years of experience in the trade. Based in Glasgow, we specialise in all aspects of joinery and bespoke woodwork, providing high-quality craftsmanship to both residential and commercial clients. Our expertise covers everything from custom kitchens, doors, windows, and staircases to fitted furniture, extensions, renovations, loft conversions and restorations. With decades of hands-on experience, we take pride in delivering precision workmanship, attention to detail, and reliable service on every project—no matter the size. At GJH Joinery Services Ltd, we combine traditional joinery skills with modern techniques to ensure the best results. Our long-standing reputation is built on quality, honesty, and customer satisfaction, earning us the trust of repeat clients and strong word-of-mouth referrals throughout the years. Whether you’re looking for a one-off bespoke piece or a full property renovation, you can rely on our experience and craftsmanship to bring your vision to life.
Couldn't get better! True professional and takes pride in his work. Have another project in mind and will definitely be getting George to do it. Obviously highly recommend.
Family business with over 30 years experience in home extensions and loft conversions, bathrooms, resin bound driveways and many more . All works are carried out by our professional team from start to finish. We undertake all aspects of extensions in the Kent and London area. No
I'm very pleased with the work the guys did. They were friendly, tidy and considerate. I definitely would use them again, good job guys :-)
UTB CONSTRUCTION was established in 2013 and is general contractor offering construction services in terms of full and part renovations houses, extensions, lofts conversion , first fix Carpentry, second fix Carpentry , bathroom fittings, kitchens fittings new built houses and summer homes,Drylining , plastering & Rendering, Decorating, specialist with driveways resin bond, polished concrete, paterne imprinted concrete,tarmac, and block paving.
Dimitrios did an excellent job working rapidly and efficiently and very willing to do extra work to achieve perfection
Nice clean job at a good price however did not return to complete 1 remaining door even though I paid in full. Disappointed as Joe was a very nice guy.
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