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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.
Experienced Builder with over 20 Years experience based at Preston, but also covers the areas of Blackpool, Lancaster, Morecambe, Kendal and The Lake District. We specialise in House Extensions and Garage / Loft Conversions. Full Kitchen & Bathroom design supply and fit service, including tiling and flooring. Full Garden design and landscaping, driveways and patios. No job is too big for us. Ourselves and all our tradesman are fully qualified and insured. If you would like an informal chat about your project, then feel free to contact us.
This rating is for the refurbishment of downstairs cloakroom, ensuite and main bathrooms. This included replacing bathroom suites, new ceilings with light and ventilation fans, full tiling and laminate floors. Probably not the cheapest but the work was completed to a high standard and all tradesmen were pleasant and understood our requirements.
Building specialists in the Norfolk area showcasing high quality work with over 10 years experience Qualifications: Level 3 diploma electrotechnical Nvq level 2 bricklaying 10 years roofing & general building experience
Quick to reply, efficient service, would recommend.
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
Are you in search of a reliable and experienced building and landscape company? Look no further than LT Construction & Landscape Ltd! With over 20 years of experience, we have established ourselves as a professional, family-run business dedicated to providing top-notch services to our clients. From painting and decorating to new build extensions and garden services, we offer a wide range of construction and landscaping solutions to meet your needs. Whether you are looking to renovate your home or create a stunning outdoor space, we have got you covered. At LT Construction & Landscape Ltd, we take pride in our work and strive to exceed our clients' expectations. Our team of experts is committed to delivering high-quality results, ensuring that every project is completed to the highest standards. What sets us apart from other companies is our dedication to customer satisfaction. We understand that every project is unique, and we work closely with our clients to ensure that their vision comes to life. We prioritize open communication, transparency, and integrity in all our interactions, creating a seamless and stress-free experience for our clients. As a token of appreciation for choosing us, we promise to beat any quote you've had. This is our way of saying thank you for trusting us with your project. We are confident in the value we bring to our clients and are committed to providing affordable solutions without compromising on quality. So, if you're in need of reliable and professional construction and landscape services, look no further than LT Construction & Landscape Ltd. Contact us today for a free quote and let us help you bring your vision to life. #construction #landscape #building #renovations #freequote ????????
Contractors made arrangements to call, arrived on time, they seemed very nice & efficient; however we did not receive a quote as promised, when I queried it; he apologized saying he thought he had emailed me to say it would be late as he had broken his collarbone. Then I received a text saying he wasn't going to quote as he was off sick for 6 weeks, so unfortunately we are unable to rate his work...
CHIS REFURBISHMENT CARPENTRY JOINERY TILING PLUMBING ELECTRICALS
Cellar & Basement Conversion
HELLO. MY NAME IS GRIGORE CHIS A MULTI TRADESMAN WITH MAIN TRADE CARPENTRY, JOINERY WHO WORKS IN PARTENERSHIP WITH 4 OTHER PROFESIONALS. WE COVER A LARGE RANGE OF TRADES LIKE CARPENTRY, ELECTRICITY, TILING, PLASTERING, PAINTING, PLUMBING.
Fast response; prompt communication; understood parameters and limitations; completed job super well and quickly. Intend to hire again for a number of jobs.
With over 40 years combined experience in the building trade our company has grown and build an amazing portfolio of jobs and customer clientele. We cover all aspects of building and landscaping no job is to small and no job is to big we can handle them all. Our company cover everything from start to finish on all jobs so no need to worry about sorting anything, making it a smooth process for our customers
Will happily consider for future work.
I am builder I have been working from last 9 years in this building industry And trying to provide quality work to british standard I can do any kind of building job If you need my any help Feel free to contact me
AVOID ! At all cost, honestly getting flooring done is so expensive and this company came ruined my new purchase herringbone flooring by laying it completely wrong! They don’t know what they are doing and have no skill. They are messy dust everywhere my walls sofa cushions, curtains everything is a mess. I stopped them and told them not to come back after paying an initial £600 wish I never paid anything now going to open a dispute. Awful is me being nice avoid these people!
Dear Customer, We are a construction company with over 25 years experience. We undertake all aspects of building work, including new builds, extensions, lofts, total renovations, new bathroom and kitchens. All work guaranteed and certified for, GasSafe and NiCEiC approved on completion.
Great job good price
Fully qualified carpenter/joiner for over 25 years. DBS checked. Full public liability insurance held.
Craig is the consumate professional - his work is excellent, he has a can do approach and he is always ready to give advice and guidance on how your ideas can be improved. Really enjoyed working with him and fully recommend him for all your carpentry, kitchen and building needs.
started business as parternership in 2007, we grown our portfolio from 2 houses to 86 units today, we also helped over 100 homeowners and 25 landlords including housing association, we help from a full consultancy package to build yur dreams to even help with leasing to our corporate contacts if you wish to invest. featured on HOMES UNDER THE HAMMER, we pride our selves in job well done, we always make sure we start projects within 2 to 3 weeks from time we agree and we always deliver our projects on time; we make the impossible a luxury and affordable possible while we take all the stress away; BGH combines technical expertise with exceptional customer service, ensuring every client benefits from cutting-edge technologies tailored to their home needs. with industry leading certifications and proven track record, BGH is a top choice for those seeking efficient, reliable and successful renovations We ate fully accredited Offer full guarantees and insurances including insurance backed guarantee and deposit guarantee We are specialist in new build, extensions, heavy refurbs, hmo and luxury conversions
Renova is a premier all-trade business specialising in a comprehensive range of building and home renovation projects. With expertise spanning every trade, we provide a seamless, end-to-end service for projects of all sizes, from small-scale refurbishments to large-scale developments. Our highly skilled team ensures exceptional craftsmanship and attention to detail, delivering outstanding results that exceed client expectations. In addition to our core renovation services, we operate a sister business based in Alexandria, West Dunbartonshire. This facility boasts a 3,500 sq. ft. showroom showcasing an extensive selection of high-quality kitchens, bathrooms, flooring, doors, and fitted furniture. This showroom allows our clients to explore a diverse range of premium products, ensuring they find the perfect solutions for their home improvement needs. Complementing our showroom, we have a state-of-the-art manufacturing facility dedicated to kitchen and bespoke joinery production. Our expert craftsmen utilise advanced techniques and the finest materials to create tailored solutions that combine functionality, style, and durability. Whether you require a custom-built kitchen, unique joinery pieces, or fully integrated fitted furniture, our manufacturing division ensures precision and quality at every stage. At Renova, we take pride in delivering a complete and hassle-free experience, managing every aspect of your project with professionalism and expertise. From initial consultation and design to construction and finishing touches, we are committed to bringing your vision to life with exceptional quality and service.
The loft converstion the guys did was brilliant. We are very happy with the outcome but more than that we were happy with the communication and the flexibility to work around our requirements. Nothing was too difficult the workers were always polite and clean. Couldn't recommend more.
Family company who started trading in 2013 .Our mission is to impact lives, offer our greatest services and advice to homeowners and to develop ongoing relationship for the future. In an ever more tough environment which is governed by the big companies we still believe that developing a good relationship with people is paramount. We always give 100% in order to deliver big or small projects on time with a great sense of duty and responsibility. This being said we are here to offer out our five star services to you in a way that we would like any business regardless of their domain to provide . Many thanks and God bless you. Tudor
Tudor was phenomenal - arrives on time, has quality work, and provides exceptional advice. Would use him and his brother again in a heartbeat.
NO UPFRONT PAYMENTS 0R DEPOSITS REQUIRED FREE QUOTATIONS. Luxury Spaces specializes in joinery, plumbing, and electrical services,l honed over 22 years to meet exceptionally high standards. Our commitment is to transparency and integrity in every project, collaborating closely with clients to achieve optimal results within their budget. We offer no-fuss financing options—simply reach out for guidance. Services' provided are as follows, Kitchen, bathrooms, bespoke staircase's, extensions, windows. As a family-operated business spanning generations, we take pride in passing down expertise from father to sons. Our dedication to excellence extends from military training—an artillery Gunner for five years—to every task we undertake. With honesty at our core, we consistently deliver value for money. Our clientele, diverse yet united in their desire for quality workmanship, inspire us to exceed expectations. To honor service professionals, Blue Light cardholders, and pensioners, we extend special discounts as a token of appreciation. For further details, visit our website: lux-spaces co,uk,
This job developed into a full house renovation including 3 bathrooms, heating, electrics, painting, joinery work (including internal doors, glazing) etc and all done to an exceptional standard, I can't recommend Aaron and the team at Luxury Spaces highly enough.
the owner of j and I roofing . I have been in the roofing trade since learning of my grandfather as a young boy first climbing ladders I am a dedicated precise and trustworthy tradesmen with a group of five men working for me all polite with a great work ethic. I started my company back in 2015 and have been persistent with my jobs with customer satisfaction always kept at a high standard.
My self and my workers have a nice way of working with clients we’re friendly polite and very clean and respectful of other people homes as we too have lovely homes . We work hard to keep clients happy and resolve problems that come there way through building projects. We also can show many recommendations from our own neighbours to people we have never met . Many thanks mark
Mark was very responsive and really helpful and informative when providing a quote for some underpinning and structural repair work. Would definitely recommend.
30 years plus of experience, all general work carried out. Clean and tidy worker always reliable.
Dave was very helpful. Good communications, arrived on time, understood the job and got on with it in double quick time. My experience was very good.
As a building We strive to make customers happy ur work speaks for itself we trie to offer all our clients the best advice and services all or callout are absolutely free advice and we do not charge for inspections this is just another way to give ? people peace of mind To choose GJ building solutions?
James and Andy provided excellent advice and did a great job. The job revealed some extra work was needed but the changes were all discussed and agreed without pressure before being implemented and James was able to bring in extra team members whilst on site so the work was completed in a timely fashion. All of the team were personable and a pleasure to have on site.
k constructions
Cellar & Basement Conversion
30 years experience Public liability insurance All aspects of building works, quality and reliable guaranteed, competitive rates
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!
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