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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.
I have worked in both the construction industry and in the private sector for over 20 years having developed a wide range of skills and expertise. I particularly specialise in the causes of damp, damp- proofing solutions, plaster boarding/plastering. Bricklaying (internal and external), blockwork and stud walling. I have also successfully undertaken work in many areas of home and garden improvement/repair/maintenance, a selection including - the installation of skirting boards, internal door adjustments and re-hanging doors, laying laminate and engineered wood flooring and the assembly of flat-pack furniture. Removal and replacement of guttering, drainpipes, fascia and soffits. Decking, garden walling, handrails, patios and steps to accommodate sloping gardens. I am trustworthy, reliable and will give a realistic, competitive price for all work undertaken.
Phil done a great job bricking and plastering up the door way, thankyou very much.
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Second generation building and joinery firm established in 1991with 30years of experience in all aspects of joinery first and second fix, fitted kitchens, shop fitting, new builds and extensions to a turnkey finish. Keen eye for detail and a quality finish at a reasonable finish.Fully insured contractor registered with CITB.
Highly professional tradesman. Did an excellent job fixing our fence to a high standard. Good communication, tidied up and would 100% recommend. Thanks very much.
At WJ Macaulay Building Services, we provide a professional service backed up by over 35 years of experience. We can be contracted to complete all manner of building: Domestic and Commercial. Farming and Industrial. Renovations, Extensions and New Builds.
It was a absolute pleasure having Jackie come into my home to take my fireplace out and put a new one in. Jackie and his son were punctual and done an absolute amazing job I would recommend them to anybody
All kinds of building and decorating. Bathrooms, tilling, painting & decorating, kitchens, carpentry, garden fencing / sheds / gates/ drains / guttering/ decking and all domestic maintenance and repairs. We pride ourselves on top quality work and your renovation or repair work will be carried to a high specification. We pride ourselves on our attention to detail. You won't need to call us out again because the work hasn't lasted. We are fully insured and our work comes fully guaranteed.
Gary and Jean are very friendly Gary came round within a couple of hours and done a brilliant job Will be using again for other jobs
my company start from 2018. out team can do every Building work from the base to the roof. digging, concreting, Stone/brick wall, Timber work, slabbing, tiling, roofing etc. excluding water/plumbing, gas and electric.
I can't recommend Istvan and his team enough. They have recently decorated our lounge and done an excellent job with a high quality finish. Their communication was excellent from the outset and they were reliable, always doing what they said they would do. As I said I wouldn't hesitate to recommend Istvan and his team and will definitely consider them for future work.
ETERNAL HOMES LIMITED
Cellar & Basement Conversion
Raylee Building Company
Cellar & Basement Conversion
Ray Lee Building Company is a trusted family-run building business specialising in new house builds, loft conversions, extensions, and all aspects of building work. We are committed to delivering high-quality workmanship, reliable service, and a personal approach on every project. We take great pride not only in the standard of our work, but also in the way we work. Keeping our sites clean, safe, and well managed is a key part of our service. We understand the importance of respecting our customers’ homes and minimising disruption wherever possible. At Ray Lee Building Company, we always aim to go the extra mile for our customers. Through clear communication, honest advice, and careful attention to detail, we work hard to ensure every client feels confident, valued, and completely satisfied with the finished result.
Beeby Construction provides a personal yet professional service
This was just a quote for a loft conversion which was already there, I needed to know if it was up to current day regulations. this tradesman went out on the same day and was very efficient. He e-mail me the next morning with a run down of the repairs and costings. I would definitely rate him.
I'm an experienced builder and cover all areas of building work including loft conversions, extensions & refurbishments. My company's aim is to provide a professional, reliable honest service. Every job big or small is done to exceptionally high standard.
The team accommodated some additional changes and unforseen jobs and any issues that came up were addressed as quickly as possible. The team were polite and curteous at all times. We have just requested some additional works with this company.
Ive been in the business over 35 years .I do all aspects of joinery such as doors ,windows,stairs,kitchens, decking,fencing,pvc windows snd doors ,facias
Frank is great and he did an excellent job of fitting windows in my garage at a very fair price. Will absolutely definitely use him again
We are a natiowide pointing & restoration company with 20+years experience in the remedial and restoration industry We try and use our own mobile tower scaffolding when ever we can thus saving money on fixed scaffolding but when a project needs fixed scaffolding it’s always recommended so the job is completed to a high standard and in a safe manor. We have worked on many prestigious heritage and listed projects nationwide including Keppels column,Birkenhead priory,sandhurst military barracks to name a few working along side local conservation offices we have the skills and knowledge to look after your home SPECIALIST TRADES: •Pointing (free samples carried out) •lime mortar specialists •Structural repairs(Wall ties,crack stitching,Lateral restraints,lintel replacement,rsj installation,chimney removal. •Brickwork (Replacement,Repairs,patching up) •External cleaning (acid wash and doff systems,paint stripping) •Stone/concrete repairs (sills,headers,lintels)
The quote was better than expected. The builders were very clean and tidy each day. The work was completed despite the weather conditions not being perfect. The finished walls were to a high standard when compared to other nearby residential properties that have been recently pointed. I would recommend this company to anyone asking for a similar job request. My neighbours have asked for contact details of the builder after seeing the work completed.
Ignite Developers has successfully developed and completed hundreds of residential and commercial projects in prime London locations for the last 10 years. With vast professional project management and contracting experience of developing our own projects that have added substantial value to our own property portfolio; we have grown to offer this service to private clients. We offer a complete in-house design and build service with a high level approach and focus on high end quality and handing over projects on time, every time. We project manage all projects so your requested task is hassle free each and every time. We cover a range of different trades including electrics and gas in addition to decorating, carpentry and extensions and loft conversions and much more.
Fantastic works done by the team who transformed our garden shed into a fully fitted out home office. Great communication with Nadeem throughout. Quick and efficient.
WJB General Building & Roofing have over 15 years experience in the building trade. We are known for our high quality, professional and value for money work. With our 5 star rating - we're sure we can help you achieve the home of your dreams.
We were delighted with the work undertaken by WJB. Throughout the works they gave advice about the finish for our media wall and other works. Very reliable and cleaned up at the end of each occasion that they worked in our property.. Highly recommend them.
Cheshire Sales
Cellar & Basement Conversion
Evo Be building
Cellar & Basement Conversion
Evobe building solutions is a family run local business. Our aim is to provide quality assured work in all aspects of the building trade from the ground up. Our ethics are to be cost considerate with no loss of quality, so you the customer, can be confident in receiving the best customer care. Our services include full project management and design if required. We liaise with local authority, building control and planning departments. Full architect plans drawn up and presented to your local authority. From planning application to build completion. Services include ground works, extensions, joinery, plumbing (gas safe),electrical (NICEIC), Landscaping, kitchens bathrooms, wet rooms, central heating, roofing, bedrooms, UPVC windows doors and conservatories. Please Call or message for your free quote.
Pompelli covers a wide range of building services with the highest quality of workmanship. From a tap washer to a loft conversion, we are happy to take a look and quote for jobs with all your requirements put at priority. 19 years professional experience
AVOID! Jon seemed done good job at the time. He also charging high as positions him as highly experienced professional. 18 months after the roof leaked and Pompelli didn't assume any responsibility and declared that he give only 12 moths guaranty. Council building control failed his installation due incorrect insulation installed and created moist being trapped under roof, room became dump, channeled electrical cables and cut beams, that led to ceiling drop by 4 inches. We had to hire a real builder to fix!
All aspects of building and refurbishment work are undertaken
Came and surveyed job but never came back with a quote
We are North London Based Building Company offering the following services: Carpentry/Joinery,Painting/Decorating,General Builduing work. Our motto is : ALWAYS AIM FOR PERFECTION
Zoltan was great. He took the time to design and plan with us, had a lot of patience for working out the detail... he was very clear in giving us timing brackets and delivering within that time. He loves what he does, and that is very visible in the quality of the carpentry and joinery he delivers. We would definitely recommend him to anyone as we are very happy with the results.
We carry out all aspects of roofing. From small roof repairs to whole roof replacements. Be it slate, tiled or stone roofing. We also do fascia and soffit replacements. We do dormer conversions, loft conversions and chimney repairs or re-builds. Lead work, flat roofs or garage roofs. All of our work and materials are guaranteed. As a trusted and reliable local firm most of our new business comes from customer recommendations. We do domestic and commercial roofing of any size. We also now do solar pv installation and external wall insulation (EWI) and have several domestic contracts with some of the UK’s largest energy providers. We strive to repair your roof in all instances and will only recommend a replacement where absolutely necessary. We pride ourselves on providing all customers with the most cost-effective solution. If that isn’t possible then the next best alternative will be advised. We also carry out all small or major house renovation projects, fire damage, flood damage and from start to finish projects. Call our team today to book a free survey - or for free help and advice contact our experienced staff.
M I Bone Builders
Cellar & Basement Conversion
Family business with over 35 years experience. We are a multi trade business and can undertake everything from drawing up plans to laying carpet. We are also contractors for a number of local authorities.
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