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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.
M & C Landscapings and Home Improvements is a business by a professional. with years of experience. Always looking for new designs and products for your garden and home needs. Whether you need garden maintenance, a new designed garden 100% satisfaction.
Work was done to perfection I am so happy with the decking polite and efficient service I would highly recommend
Hi Im a builder with over 20 years experience in construction and decorating I have a team of 6 good workers wii do olmost evri job inside and out side home restaurants club's and mani more. No job to small or to big.
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.
Hi I am a multi skilled handy man / Builder who prides himself on customer care, there's no job too big or small.
Darren Lee did a very great job came at the actual time he gave clean the work place I'm very pleased with his work and I will definitely recommend him is a good man
welcome to SMG PLASTERING.we work to a high standard and all strive to achieve not only the best finished work possible but also to make a freinds of a customer for future reference.thanks for taking the time to view my profile. shaun
Bathrooms Kitchens Commercial Decking Carpentry Wetroom specialists Company going 20 years
Great job done, really pleased with the finished work. Would recommend and use in the future
Welcome to DB ARK With over 10 years of experience, we specialise in creating bathrooms, bespoke furniture and kitchens that combine style, functionality, and quality craftsmanship. Whether you’re looking for a modern kitchen upgrade or a luxurious bathroom transformation, we deliver tailored solutions to suit your needs and budget. Our services include: •Full bathrooms and kitchen renovations •Custom cabinetry and fittings •Tiling, flooring, and lighting installation •Plumbing work •Wet rooms and walk-in showers •Bespoke furniture •Carpentry work We pride ourselves on delivering high-quality finishes, attention to detail, and excellent customer service. Check out our portfolio and customer reviews to see how we’ve helped clients turn their vision into reality.
Fabricating,Welding,Install:Security Grill Gates,Railing,Automatic gate,Staircase's,Collapsible,Window,Balustrade,Structural STEEL,Beems,Alloy Wheels,Exhaustes,lowering,welding:ARC,MIG,TIG,GAS,STAIN LEES STEEL,LED:Basic Plumbing+Painting+Powder Coting,Galvanise+...
Hired Amir to retrofit a Locinox soft closer on my gate, which turned out really well. The job was complicated but Amir took his time to understand what I wanted and finished the job to my satisfaction, thank you.
hello, we are a small building service . clean tidy friendly tradesmen specializing in small building projects. high standard of quality assured. city n guilds time served tradesmen. Certificates in lime mortar repointing heritage
Jay assessed the job in person and gave me a fair quote on the spot. He’s just done the job on a Saturday and it looks great!
We have over 20 years experience in domestic and commercial building work. We do all sorts of decorating, tiling and plastering work, kitchen and bathroom fitting, fully refurbishments, extensions, loft and basement conversions.
Silvio and team did a fantastic job installing my new kitchen. From helping with the design, to recommending more efficient plumbing work to make everything fit properly, the process was seamless from start to finish. Catalin is extremely skilled and I was impressed by his efficiency and the quality of his work and the others who assisted. Would 100% recommend Star Construction to others.
Newman plastering. I am a one man band company, with just myself on the tools This means I have no overheads, so I am able to keep the cost down for my clients, but if needs be I can lay my hands on quality plasterers who share the same skill and passion for the job as me. range of services cover: * skimming plastering * Damproofing * External rendering * Dry lining * Internal rendering * Monocouche scratched renders(k rend) Why choose me? * friendly & reliable service * Many years of experience * Pay attention to health & safety * clean & tidy I have more than 10 years experience in all aspects of the plastering trade, and started learning the art of plastering with my uncle . By the time I was ready to leave school I was already becoming handy with the trowel and had some experience behind me, so I went on to do my apprenticeship and work with various other plasterers gaining more experience and learning my trade on housing sites and various big commercial jobs, as well as doing the odd domestic and private jobs. What makes me different from most companies? Well, I actually enjoy what I do and love plastering, so you can be sure to get a top job. So now you know a bit about me, feel free to use me for your plastering needs.
Neat, tidy and excellent finish in a small rm
Here at A&E home care we are a small family run buisness, we specialise in almost all internal and external home / work / commercial properties repairs/maintenance/improvements , with more than 30years experience between us we have been established since 2018, all jobs are completed to the highest of standards
Full home renovation expertise from building an extension to tap replacement. Electrical works, carpentry, Laminate/Carpet flooring, Bath installation, Kitchen installation, Interior/exterior design!! The ultimate damp proofing solution, using a cutting edge technology that allows walls to be protected from water ingress remaining its full strength and breathiness. Enjoy unusual projects that requires creative mind. If something seems complicated let us know we like complicated projects. Over 20 years experience with some of the most unusually creative projects help clients to improve and build their homes. We are a team professionally organised builders. Our team members experience vary from as low as one year experience for an apprentice to as high as 40 years engineering experience for experts.
I’ve been plastering for 35 years with vast experience in all aspects of traditional plastering
Thank you for reading our profile. We have over 20 years experience in all aspects of Roofing, from small repairs to a full new roof. We really do care about all our customers and take pride in our work . We are hard working, punctual and honest.
All our work is carried out by seasoned builders, qualified specialists and managed by a qualified trader. We take pride in our user friendly approach and professionalism and always aim for a flawless finish.
This guy standards is very poor for vinyl I would avoid at all costs, he has no skill in vinyl and he insisted I paid in advance, if I see this man again I will.prpnanly go to jail!
With over 15 years experience in the building trade as a qualified joiner I mainly specialise in kitchen fitting, from supply to fit or just fit from any major suppliers like wrens, magnet, howdens, B&Q etc. Over the years I have built a professional team and now work with qualified plumbers, electricians and plasterers to cover all aspects of renovation works, from simple decorating jobs to full house refurbishments involving multi trades . One thing above all I pride myself on is customer service and I'll ensure you're happy with my guidance,competitive pricing for any agreed works and ultimately the end result. Please do reach out either via mobile or direct quote for a free non obligation quote ! At eye for detail, I won't leave your job until you're 100% satisfied.
Razas Direct Ltd. is a small friendly company providing home and office renovation and garden landscaping services ideal for homeowners, business executives and investors. With our services you will be able to change entire look of your home or a garden.
A nice guy, who did the job, but I was glad to see leave!Substantially under estatimated the time the job would take. Despite being home, he made poor decisions without communicating with me e..g. initially fitted handrails stupidly , intended on leaving base of initial hadraill, left bricks on drive (despite advising him of attempted break in) expected me to get rid of waste, asked4payment mid way through (an intended 2 day job). Asked for more money after job was done, despite agreeing the price at outset
We are Commercial and Domestic glazing contractors covering all of Northern Ireland. We provide a 24hr boarding and securing service. We also carryout all types of joinery and minor building works up to 15k.
32years of experience in new builds , general, commercial work,building, quick and efficient. Drainage, small roof repairs. My business has been successfully running for 20years.
Quality service. Very impressed with Tony and his team. Tony arranged any extra tradespeople we needed. The work is to a high standard. We were kept updated when people would be coming to the property to work. Really positive experience, especially as it was the first time we have used rated people.
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