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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
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.
ALL ABOUT HOME CONSTRUCTION
Cellar & Basement Conversion
We are an established company with more than 30 years experience of building and constructions around Europe including Greece and England. We currently cover the entire Sheffield Area and also within 40miles. We are a team of high skilled professionals with a keen eye for detail and we place a particular emphasis on good customer relations which includes trust and reliability. Our main aim as company is complete client’s satisfaction, delivering all projects within budget, time scale and to the highest of standards. We take on any building construction work you need including, including: - Roofing - Tiles - Garden Renovation - Full House Renovation - Decoration ...And more! We can provide pictures of previous jobs too.
HMR CIVIL ENGINEERING LIMITED
Cellar & Basement Conversion
Builder Boys
Cellar & Basement Conversion
With 10+ years of experience in the industry, Builder Boys Service brings a wealth of expertise and proven success to every project. Our extensive experience allows us to deliver top-quality workmanship, exceptional service, and unmatched professionalism. Trust in our seasoned team to bring your building visions to life with precision and dedication that only come with years of experience. We understand the importance of meeting deadlines and strive to complete every project within the agreed-upon timeframe. Our efficient planning, skilled team, and streamlined processes ensure that your project progresses smoothly and is completed on schedule. You can trust us to deliver exceptional results without compromising on quality, ensuring your satisfaction with our punctuality and dedication to meeting your timelines. We are deeply committed to providing our clients with the highest level of dedication and transparency throughout every step of their building journey. Our honest approach ensures that you can trust us to deliver on our promises and provide reliable solutions tailored to your needs. With Builder Boys, you can count on a partner who is genuinely dedicated to your satisfaction and committed to building lasting trust and relationships.
Gabrica Ltd provides reliable and high-quality property refurbishment and maintenance services across London. We specialise in kitchen and bathroom installations, tiling, flooring, carpentry, painting & decorating, and general home improvements. With years of hands-on experience, we take pride in delivering clean, precise workmanship and completing projects on time and within budget. ✔ Fully insured ✔ Attention to detail ✔ Clean and tidy work ✔ Friendly and professional service Customer satisfaction is our priority.
Brilliant. Efficient, hard working, friendly, professional, good vale and quality work. I'm very pleased and will use again.
We are General Building Services ANGEL BUILDING@BUSINESS We look after our costumers for 26 years. All Work Undertaken
With over 35 years of industry experience in Northern Ireland, Aquaforce is Newtownabbey’s local experts when it comes to building services. Whether it’s domestic, contract or commercial work, no job is too big or too small for our highly skilled workforce. Our friendly and reliable team offers value for money and expertise across a range of building and construction services for both private and commercial clients. From extensions, repairs, loft conversions and damp proofing to insurance work and decorating, we handle everything. If you’re home or workplace is in need of repairs or renovations, don’t hesitate to contact Newtownabbey and Northern Ireland’s premier building services today.
Messed me around for weeks and then on the day job was due to start, they said they couldn't come. Very disappointed in the level of service. Avoid.
Philip Bamford
Cellar & Basement Conversion
We specialise in new builds, extensions, conservatories , loft conversions , garages ect. And all our work comes with a full written garrantee . Plus references are provided with every quote
We’re an established start to finish building company that pride our selfs on our professional nature and due care and attention to the customers needs, the company boasts professional trades in Bricklaying, Joinery, Electrics and Roofing. Between us we have over 55 years of experience in the trade and you will not be disappointed with our ambitions to please.
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Fully qualified carpenter/joiner for over 25 years. DBS checked. Full public liability insurance held.
Mercer construction completed my job perfectly. Matt arrived on time, had already started the job before I arrived. Great job, cleared everything away after. Would definitely recommend. Very pleased customer.
HANDY HOME REFURBISHMENTS SPECIALIST
Cellar & Basement Conversion
Handyhome Refurbishment Specialist are your number one choice in East Sussex for all your refurbishment and building needs. We take you through every step of your project from start to finish. Providing a professional service across Eastbourne, Hastings, Brighton, Bexhill and surrounding areas. Fully Insured Proud members of my builder and rated people
I've been working in the maintenance Industry for the past 19 years and i've worked for 6 different councils in London, I've been trading since 2012 with this company.
Outstanding work and highly recommend Lucky of A&L. Impressed with their professionalism, attention to detail and general tidiness. My large garden was overgrown and untidy and was pleasantly surprised at the work and outcome carried out by A&L.
Mp roofing services take a friendly and professional approach to all customers and provide free and no obligation quotes whatever your job entails ,we are highly recommended in the local area,we also are highly recommended on other sites ,our regular jobs span from general gutter repairs to new flat and pitched roofs , new facial soffits and guttering , pointing repairs and Complete roof overhauls . Thanks for taking the time to read our introduction and look forward to hearing from you .
Did a great job on my roof. Cleared all rubbish and kept working until the job was completed. They did the job at a very fair price.
AT TRIDENT DAMP,we have thirty years experience can give up to 25 year insurance backed guarantees and are approved Triton system contractors,we are also accredited by which trusted traders,checkatrade and mybuilder and have over 200 reviews of our works.
Very quick turnaround and good price
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
Beautiful carpentry work , attention to detail is amazing, hes gone the extra mile to help us transform our home. Would recommend for all joinery work doors ,door frames, bannister, skirting, loft hatch, flooring and plastering. Very good price also. Very approachable with better ideas. Have recommended Tom to everyone I know!.
We are a company that has highly skilled qualified tradesmen in all services we provide. We currently have 2 companies under our umbrella: JTL Roofing & Cladding We specialise in all types of roofing and cladding, from flat roofing to tiled roofs, to zinc to industrial units. The team has got you covered! - JTL Fencing & Landscaping From domestic to commercial, our qualified team of fencers have been trained to the highest standard. Whether you need closeboard fencing to picket fencing, panel fence to security fencing, we have a solution for you. This company also specialises in building your perfect outdoor space. whether it is a patio or a driveway, new artificial lawn or a decking area. We have got it covered. All of their garden transformations are built around the clients requirements. JTL Group Ltd are committed to providing the best service, best quality of workmanship and best value for money in the current market. Get in touch now for a free no obligation quote, or just for a bit of advice. we are here to help!
James worked really hard and even mended our back gate for us even though we didn't ask him too, fantastic
Whether you want to install a new kitchen or your home needs urgent repairs, we’ve got you covered. Oliver with a twist home improvements, offers a comprehensive range of building services for customers in Leeds and the North east of England.
Very polite respectful men workmanship excellent only one criticism is Andrew needs to sort time management
I am an individual who prides himself on giving quality with reliability, with many years of experience.
The work completed as planned. Wayne is very considerate helped the lady tenant feel comfortable. I recommend him without any reservation.
J S MULTIWORK LIMITED
Cellar & Basement Conversion
We are family run business of specialist fit-out contractors based in North West London.
I booked Daniel to refurbish my kitchen & various other parts of my flat. He attended on short notice to discuss my requirements. He understood the brief & made useful suggestions. Over the course of 2 weeks he worked extremely hard, going out of his way to do a first class job. He was polite, friendly & professional. The quote was very reasonable & there were no surprises or extras. Most importantly the results exceeded my expectations. If you want someone who will take care of everything he's your man.
High quality of offered services, flexible and reliable builders just for you. We always meet the deadlines set with customers and make sure they are proud of work we've done. "Great prices and fast, quality work" - these words describe us accurately.
I cannot speak highly enough of the MBS team. They were everything one would expect from a service provider. They were punctual, polite, they knew what they were doing, the quality of workmanship was high, they were honest and their prices are fair. Most of all -they were reliable and clearly had our best interests at heart. I wouldn't hesitate to recommend them to any other prospective customers. Excellent!
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