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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.
ALEX AND SONS LANDSCAPING, BUILDING AND GARDENING SERVICES
Cellar & Basement Conversion
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We are a reliable and successful company and we provide the quality and the qualification of the work and product which we are doing for you .Our motto is, my customer my boss. We coming for a long journey experience working of 20 years working experience in Spain,Italy, United kingdom and Romania of landscaping industry and inside and outside house design of isolation,consolidation, any work of tiles or painting. We coming with the real quote of the work we try to be in competition with the construction quotations and to make our clients to make our publicity for work and quotations
Alex visited me for a quote. One member of his team came on the same day and did the front garden quickly and efficiently.
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.
Courtney Construction & Landscaping
Cellar & Basement Conversion
Hello, thanks for stopping in at Courtney Construction! We are a family run general building and landscaping company built on family values. Across the team we have over 10 years in the building trade with various different skill sets. Nothing is beyond our capabilities and we offer a turnkey solution on every project with our customers satisfaction and work quality as our main priority. We cover a large array of different jobs internally and externally, residential and commercial from conversions and extensions to drive ways and garden designs. Between the team we have numerous qualifications from construction, refurbishment and restoration to brick laying and more.
We are a family run business with over 15 years in the building trade. From joiners, plumbers, electricians, painting/decorators, landscapers and plasterers we have it all. We take great pride in our work and customer care is priority. We do apply an out of hours charge after 6pm, weekends and bank holidays.
Hello we are FRPM Ltd a compete property maintenance company with over 20 years experience so if it’s a leaking tap to a complete property renovation we are here to help so please do not hesitate to call for your free quote Areas we cover Worcestershire Gloucestershire Warwickshire And the Cotswolds We have years of experience working with listed buildings and pride ourselves and our level of knowledge and expertise in this area We also cover light commercial premises for maintenance contracts and adhoc works We are fully insured
DO NOT USE THIS PLUMBER! Andy MacClay trading as FRPM was engaged to fit a bathroom for a lady in her 90's. Although personable, he did an appalling job and left the poor lady with raw sewage leaking and a dreadful smell. She was very distressed for months and it cost over £1800 to put the work right. He has since stopped answering his phone and does not respond to any communication.
Quebuild London Ltd offers a full building service with every aspect of works covered no matter the scale or scope of works to both residential and commercial buildings.We also provide proactive and reactive maintenance packages with 24/7 one hour service for emergency call outs.We pride ourselves on using only highly skilled and courteous tradesmen with all trades in house so as a company we have full control of our projects. From your initial meeting with one of our knowledgeable estimators who provide fixed price detailed estimates to completion of works overseen by amazing management our clients needs are paramount,this ensures a streamlined service with quality controlled finishes beyond the industry standard. We have full public liability insurance with all risk assessments and method statements in place at all times no matter the size of works for peace of mind for us as a company but more importantly you as our client.
John at Quebuild went above and beyond for us on this job. He completed all the work in a timely manner and for a very reasonable price. He was super knowledgeable and extremely attentive to detail, making sure to leave a high quality finish in terms of decoration - and he came back afterwards to address a few small things that needed doing. He was also a pleasure to have around - and I would highly recommend him for any other work. 10/10.
I am a local tradesman with 25 years of experience in the building and plastering industry. I have a great, reliable team behind me who are not only friendly and professional but will also finish every job to the highest standard possible.
Really happy with the work carried out. Any issues I raised were dealt with and any snagging I needed addressing were resolved. Would recommend Luke and his company and use him again.
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.
Our company Construction and Renovation work of 25 years. At this time, we have gained a wealth of experience backed by references received from our customers. Cost estimates are free of charge. Professionalism guaranteed.
Greg is a very helpful and professional. Arrived when he said he would and gave sound advice on a very tricky guttering problem.
Smart Choice Roof
Cellar & Basement Conversion
SMART CHOICE ROOFING SERVICES Established over 3 years ago, we provide expert roofing services to commercial and domestic clients across Surrey, Hampshire and West Sussex. A wide variety of services can be carried out to fulfil all your roofing requirements, from new builds to re-roofs, roof repairs and more! Why hire us? 1. All our work meets strict quality and safety standards. 2. Our workforce is subject to continuous training and the company health and safety policy is regularly monitored and updated. 3. We offer emergency call out. 4. We undertake insurance work.
Our team consists of Painters and Decorators who takes great pride in the work we do. Our aim is to ensure a 100% customer satisfaction. We believe in quality of work and will always aim to deliver the best quotes and quality of craftsmanship possible. We are reliable, and will always aim to charge the given price at quotation. I accommodate services for both domestic and commercial clients. We offer quality advice and services. Our services include: Exterior Painting, Painting and Decorating, Wallpapering, Wooden Windows stripped and painted, Free No Obligation Quotes Guarantee of Work Carried Out Please contact us with any queries or questions.
Indrit from Reni did an excellent interior painting/decorating job for me. If you want a friendly, solid and reliable professional then he's your man. Obviously, I'm very happy with his work!
General Builder 19yrs in the trade Highly skilled - standard to high end jobs
Excellent decorator and builder. Professional, reliable and courteous Completed a 5 bedroom home with small building and electrical works to a high standard.
THE GCD GROUP LTD
Cellar & Basement Conversion
GCD Developments is a multi-disciplinary property practice, covering property development, project management, architecture and interior design across London and United Kingdom. Whilst every project is unique, the philosophy behind each is unwavering: at GCD we strive to craft environments which are not just beautiful, but faultlessly functional.
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KCR LOFT CONVERSIONS LTD
Cellar & Basement Conversion
We are a carpentry based company providing high quality loft conversions in the Northants, Bedfordshire, Buckinghamshire and Leicestershire areas for the last 2 years before that we are carpenters in the construction industry for 18 years please contact us for competitive pricing and high quality work with our architectural partners we can help from conception to completion and negotiate the planning side and building regulations that can be required. Did you know that most lofts can be converted as long as you have 2.3m from ceiling to top of ridge and you no longer require full planning most can be done through permitted development but we recommend that all clients obtain a certificate of lawfulness with there build it’s just better practice of you come to sell your property later on
At AAHomeImprovementUK Ltd we pride ourselves on being the go-to bathroom fitters for discerning customers in the Wigan and Greater Manchester area. It is a well-known fact that bathrooms sell houses. They also add a touch of indulgence to your home. Your bathroom is a long-term investment; it is important that you choose wisely. Our years of experience has helped us to gain a good understanding of what works and what doesn’t. We take the time to listen to our customers’ needs and make recommendations to them based on their requirements and our extensive experience. We are proud of our team of bathroom fitters and guarantee a friendly, clean and tidy service; we always aim to exceed your expectations, which is why we have gained the reputation as one of Wigan’s finest local bathroom installers. We are fully insured and qualified to meet all of your bathroom fitting needs and are affiliated with GQA to help promote best practice. We specialise in all bathroom fitting and design services including: Design Supply & Installation Full or Part Renovation Wetrooms Showers Underfloor Heating Plumbing Tiling Plastering Painting & Decorating We take a personal approach to every bathroom fitting we complete and ensure that every bathroom delivers on quality, value, functionality and appearance. If you would like a free, no-obligation consultation and quote please contact us, or for more information about our bathroom installation services and to take a look at some of the work done by our friendly
Electrician at Self employed electrical engineer
Came out short notice. Managed to squeeze me in. Due to short notice of getting room plastered 3 days later. Had 4 double plugs put in. In chrome like I wanted. They were professional and cleaned up after themselves. Will definitely use again
Over 15 years in trade Fully qualified gold ECS CARD Managers black card ESC CARD Very honest and reasonable prices
Perfect. Explained the problem - explained the best solution - completed the job completely. I didn't even have to clean up afterwards. I think I'll make Miles the family's "Go-To" electricial in the future. Thanks!!
Goldsmith's building services for reliable tradesmen , professionalism and quality workmanship.
Phillip arrived when he said he would and got the jobs done in a great time. Polite and friendly and did a great job, I would recommend him and will use him again
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.
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