Find local basement conversion specialist near me
Over 10,000 rated tradespeople
are ready to help you get your job done
Over 3 million happy homeowners
have found a quality tradesperson
Over 1 million ratings
with 88,000 5* ratings in the last 12 months
Join our group of happy customers
Thousands of 5 star reviews
Read real reviews from customers about their service experiences.
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
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 to transform your underground spaces into useable rooms. Find everything you need to know about hiring a local cellar conversion specialist. 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
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
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.
Other basement conversion FAQs
Do I need planning permission for a cellar conversion?
You generally do not need planning permission if you are converting an existing basement into a living space without changing the building's external appearance. However, you will likely need approval if you are excavating a brand-new cellar, creating a separate living unit, or working on a listed building.
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.
What questions should I ask before hiring a basement specialist?
Always ask if they carry public liability insurance, how many years of experience they have, and for a detailed cost breakdown and project timeline. You should also confirm if they use subcontractors, ensuring any gas engineers are Gas Safe registered and electricians are appropriately certified.
What is a sump pump, and do I need one?
A sump pump is a drainage system installed below the basement floor that automatically pumps out any groundwater that collects under the property before it can flood your room. Because cellars are naturally below the water table, a sump pump paired with a waterproofing cavity drain membrane is almost always required to ensure your conversion stays completely dry and structurally safe.
Thanks for visiting our page. You can see an archive of photos on this page and if you would like more photos of any specific type of job please ask. We are happy to tackle big jobs or small and strive on customer satisfaction and repeat custom. Thanks
Lee and Chloe were fantastic. They built a decking area for us which has transformed the garden. The quality of their work is excellent and their work ethic is superb. They offered great advice and ideas, which often saved us money. I would have no hesitation in recommending Lee and Chloe, lovely people, excellent quality work and great value.
NICUABRU SERVICES LTD is a company formed over 7 years ago, specialized in flats, houses renovation and house extensions. Our aim is to provide good quality services at a reasonable price and customer satisfaction is crucia
Fantastic work, above and beyond what we asked them to do. Very happy with the finished job, done quickly too. Also great advice on other aspects of the refurb. Would definitely want to use the guys again. Thanks Nicu and Daro.
CONNELLY'S LTD
Cellar & Basement Conversion
Connelly's Ltd has been established for over 20 years, we carry out all building works from small alterations to new builds. We have a large selection of tradesmen that have worked either directly or on a self employed basis for many years. We have hundreds of happy customers who will happily provide references, on request. All of our quotations are fully itemised and we always offer cost saving advice if we are able to do so.
About Arena Group – Maintaining Homes Together At Arena Group, we believe home maintenance is about more than repairs it’s about trust, safety, and building lasting relationships with the people we serve. With over 25 years of hands?on construction and refurbishment experience, we’ve grown into a trusted partner for homeowners, landlords, and housing providers across the UK. Our mission is simple: to maintain homes together, blending craftsmanship with care.
D L EVANS CARPENTRY
Cellar & Basement Conversion
Fully qualified carpenter with 16 years experience. All carpentry work undertaken including, 1st and 2nd fix work, kitchen installation, roofing, installation of windows and doors, tiling, etc. I have a wide range of experience with both small and large jobs including new builds, extensions and renovations. I currently have two qualified carpenters who I employ and I also have contacts within all sectors of the construction trade, which enables me to project manage a whole job if needed. I take great pride in completing my work to a very high standard and I have an excellent eye for detail. References from previous customers are available.
My company can offer all aspects of home improvements and all aspects of roofing with a full guarantee with all woks carried out I have 15 years of experience in the trade With many happy customers and our company is fully insured so rest assured
Dwain and his team did a really good job. They responded to the job post and came to do the work quickly as I needed the work doing quite urgently. They did everything I asked, and got it just right. Friendly service with a smile. Would recommend.
LM Home Improvements
Cellar & Basement Conversion
5 years experience on my business All Garden improvement and design Fencing Tiles Driveway m Artificial grass Slabs Block paving Artificial grass Fresh turf Walls bricks and blocks Wood work & Pregola and much more
PRESTIGE BUILD SOUTH WEST
Cellar & Basement Conversion
We are a dedicated and reliable team of local tradesmen with over 20 years experience in all aspects of general building that have combined forces to offer professional services at competitive prices. We are Fully insured and offer no obligation quotes. We are new to rated people hence why we haven’t had any reviews as of yet, but please check out our Bark site on Google and the photos of our 5 star reviews.
ES Building Services is a family run business with a team of highly skilled, well experienced and passionate professionals who puts your needs at the forefront of what we do. All our work is completed to the highest industry standards and compliance with current regulations is always met. We focus on providing a high end finish on all of our projects regardless of budget. We will make sure you are involved and understood at every step of the process, from design to completion. Whether it’s a simple maintenance job or a full internal refurbishment, we aim to provide a level of service that exceeds your expectations. Our predominant active contacts consist of bathroom and kitchen refurbishment work. We work alongside multiple industry leaders and have an excellent track record in providing high quality installations across London. With a skilled and mature team of professionals we have an abundance of experience in all areas of building services. We specialise in full internal refurbishments covering all aspects of the build: strip out, plastering, kitchens, bathrooms, plumbing, electrics and everything in between. With over 300+ 5* reviews accross all platforms, rest assured your property is in safe hands with ES Building Services. Kitchens Bathrooms Refurbishments Electrical installation + Everything in between NICEIC Aproved Contractor. GasSafe Registered Engineers. SafeContractor Approved.
We are a building company based in Burton on Trent. We deal with wide variety of specialists that include: Painters and decoraters Plasterer/ Renderer Brick Masonry Extensions Bathroom design and instalation Professional tiling service Joiner Tiler Floor fitters Gardener / Landscape gardener Loft conversion specialist Roofer Stoneworker/ Stonemason
I first thought it was going to cost too much but they worked very hard, we were very impressed that they worked so hard during the very hot weather. Excellent work l would highly recommend.
S&D Construction Services is a premier general construction business with over of 23 years of Experience in the construction industry, we have established ourselves as a leader in delivering comprehensive construction services with a wide range of sectors including residential and commercial projects across London Our mission is to provide exceptional construction services and client-focused approach to every project we undertake
Nicolae was great to work with, very accommodating, quick and unphased by bad weather. Did an excellent job with the blockwork at a good price and a good job with the plastering, which was little bit more expensive, but worth the assurance of having the same person do both jobs. Would recommend for similar, quick turnaround jobs.
Hello, and welcome to Home Fixology – your friendly neighbourhood home improvement experts! At Home Fixology, we don’t just fix homes; we build trust through a personal touch that turns every project into a unique journey. If you want to see our growing portfolio of reviews, you can check us out on UK TRUSTPILOT: Home Fixology We're on FACEBOOK too: homefixologyltd Services we provide: Roof restorations: Repairing and refurbishing roofs to improve their structural integrity and appearance. #ProPERLA #Renotec Wall coatings: Applying coatings or finishes to exterior walls to protect them from weather damage and enhance their aesthetics. #ProPERLA Driveway restorations: Repairing and refurbishing driveways to improve their appearance and durability. #Resiblock Flat roof services: Repairing or replacing flat roofs to prevent leaks and water damage. #FirestoneRubberRoof Render repairs: Fixing and maintaining render on exterior walls for structural integrity and aesthetic purposes. Loft insulation: Installing insulation in lofts or attics to improve energy efficiency and reduce heating costs. #SuperFOIL Damp proofing: Treating and preventing dampness and moisture issues in buildings to protect against structural damage and mould growth.
We are based in Exeter and offer property alterations & improvements, garage conversions & extensions, carpentry, plumbing, painting & decorating, kitchens & bathrooms, landscape gardening, fencing, log cabins. We are CRB checked & insured to £5M
Extremely useful to know someone with abilities spanning across different professions. He really is Handy Andy! Genuine and very pleasant.
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
Aspray takes charge of property damage claims, handles every detail, and takes the time to communicate and explain the situation. The pandemic proved no barrier to this excellent service delivery and Aspray continues to use technology to maintain and even improve on this record.
Good service
KM RENOVATIONS LTD
Cellar & Basement Conversion
Small company of 4 people specialising in boiler installation, repair and servicing. Gas fires and cooker installations. Landlord safety checks. Full central heating system design and fitting.
The job was completed exactly as described and on time.
ND Demolitions Ltd
Cellar & Basement Conversion
Hello people ? most of the jobs is soft strip out and demolition ? buildings, and houses I got in demolition, 13 years experience and all hours people ? is very friendly ?????????
We are a family run company based just outside of Chester and have worked in Chester,Wirral and North Wales for over 30 years.We undertake all aspects of building work.We specialise in new build garages and extensions.We fit replacement rubber roofing at very competitive costs.Replacement fascias guttering,cladding etc. We have been general builders for more than 25 years. . We undertake structural steelwork,renovations and ,we have completed many house refurbishments for local developers in recent years,mostly in the Chester area We have built new build houses. Fit new fascia and gutter systems.We offer plastering services,We always promise to be competitive on price whilst providing a top class service.We are always fair in our price and customer satisfaction is paramount. .
Colin and his team did a great job - wall repaired good as new. Very professional and good follow-up communication and competitive pricing. Would recommend highly.
' Top Quality construction at an honest price' .
Very considerate, excellent workmanship, willing to offer sage advice. Other trades people engaged by Pete also very polite and highly competent. The job did run over the expected duration however Pete kept us informed as he progressed. Using Pete for the next job on the house is a no-brainer.
Get our app for homeowners
- Send messages and get notifications from tradespeople
- Add photos to get more accurate quotes
- View tradespeople's profiles

















