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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.
South London Plastering
Cellar & Basement Conversion
We here at south london plastering, have been operating for many years with a combined 77 years experience through the team. Always aiming to deliver the best quality of workmanship craft on every project we tackle. Our team always come well presented, very polite making our clientele at ease. Achieving quality in attention to detail, we always leave the job how we found it. We cover all aspects of plastering and rendering we also have other services but this being our main one. What we do •Venetian plastering (polished) •skimming •rendering all types. Including coloured render systems. K-rend, Ewi, Monicoshe. •External insulation (saves on the energy bills) •internal insulation •dry lining (plasterboard) •damp proofing •damp surveys •bedroom renovations ( new everything) •garden rooms/offices •garage conversions
Rose Projects
Cellar & Basement Conversion
A Construction Company based in South West London. Craftsmanship is our main focus ensuring every detail is finished to our high standards. Our Communication and Understanding are key. We are always on hand to help and assist you with any questions throughout the build. Our Projects are always built on time and budget. We are fully insured, All our tradesman are Qualified and References available upon request. Regards Rose Projects
Residential and commercial building contractor specialising in kitchens, bathrooms and full renovations. With over 12 years experience in the building industry our attention to detail is paramount.
Very quick, well priced and they did a great job. Thank you
We are general builders and groundwork contractors going the extra mile ,we have many satisfied customers more info can be supplied on request , check out my website all work has been completed by.uS. To a very high standard
MWE Builders removed our old garage, re built a new larger block construction garage, and we are very pleased with all of the work completed. Throughout the build we were kept informed of every stage, Matt was on site every day, even through some horrible wet weather. I would highly recommend MWE Builders, for price, quality, and friendliness. Thank you Matt, we appreciate all of the work you have done. Many Thanks Will and Wendy Kingswood Bristol
DT Contractors is a growing business, established over 10 years ago and now run by two brothers. Various skills between both of us and our team. Can complete all sorts of jobs to the highest standard and great quality. No job is too small or too big for us! Just contact us, talk to us and we are sure we can find a way to sort whatever is required. ‘Impossible things - we are sorting staring away! Miracle - give us couple of days!’
Came and looked at job quoted then didn't answer 3 emails
I am a reliable and trustworthy person. I have very been running my company for the last 10 years.
Found this company on here, asked for a quote, he came out and was very knowledgeable about the work we needed done and gave a competitive price for the work, he had a free slot that worked for us, so he was booked turned up as planned work went to program and was finished on time, did his best to make the mess minimal but it was what it was, pleasure to deal with kept informed and very happy with the result id happily recommend him and his guys, already got future plans for him to do more work for us soon
"Here at AAR plastering & building services we have a wealth of knowledge throughout all the plastering and building sector, please get in touch for your free no obligation quotation today"
Bathroom ceiling painted, Alan did a great job with the best quality materials. He is very trustworthy and friendly. I would highly recommend and will be putting more work his way in the near future.
Top Line removals & clearances
Cellar & Basement Conversion
Check out our face book page toplinesprayers uk !!!!
At Sergola Ltd since 2017 as business running and 2010 as a self employed We specialize in transforming houses into dream homes. From complete kitchen and bathroom renovations to innovative loft & extensions, our skilled team excels in bringing your vision to life. With a focus on quality materials and meticulous workmanship, we ensure that every project exceeds expectations.
My company can offer all aspects of home improvements and all aspects of roofing with a full guarantee with all woks carried out I have 15 years of experience in the trade With many happy customers and our company is fully insured so rest assured
Dwain and his team did a really good job. They responded to the job post and came to do the work quickly as I needed the work doing quite urgently. They did everything I asked, and got it just right. Friendly service with a smile. Would recommend.
Hi, I’m Luke, the founding member of Sol.Co- Structural outdoor landscaping company. I have been a self employed builder and fully qualifed bricklayer for the last 15 years. Although bricklaying, stonework and paving are my speciality, I do have a really wide skill set. Please see my gallery for examples. I have been fortunate enough to gain building experience all over the world in Australia, Portugal, parts of Asia and the UK. I enjoy working closely with customers and offer a bespoke service for all building needs. Over the last few years I have begun focusing my work towards garden building design. I enjoy working on outdoor spaces as they offer opportunities for creativity without the limitations of planning restrictions. It is also high impact work. A garden can be changed a lot in just the space of a week or two. I appreciate the importance of listening to customers carefully, adding suggestions from previous designs and my own experience as needed. I am happy to put references forward if required. Thanks for taking the time to view my profile.
Luke is very professional in all stages of the work he carried out. His quote for removing old decking and replacing it with a paved patio was very detailed and reasonable. He kept me informed at every stage of the work. When he finished laying down the patio he left the area clean and tidy. I can honestly say that I am really impressed with the finished job and have no hesitation in recommending Luke of Sol.Co to anyone wanting similar work doing.
Thiara Construction Ltd
Cellar & Basement Conversion
Quality.safety.reliability All building works undertaken Loft conversion Back extension Driveways Renovations Gardens
I’ve been plastering for 35 years with vast experience in all aspects of traditional plastering
good workmanship
**Italian Job Services LTD - Company Description** **Overview:** Founded in 2021, Italian Job Services LTD is a premier construction company dedicated to delivering high-quality craftsmanship and innovative solutions in the building sector. Based in Crawley,our team is committed to transforming vision into reality while ensuring that every project reflects our core values of excellence, reliability, and integrity. **Mission:** At Italian Job Services LTD, our mission is to provide exceptional construction services that not only meet but exceed our clients' expectations. We strive to build lasting relationships with our clients by understanding their unique needs and delivering tailored solutions that enhance their living and working environments. **Services Offered:** We specialize in a wide range of construction services, including: - **Residential Construction:** Custom homes, renovations, and extensions that embody the beauty and elegance of Italian architecture. - **Commercial Construction:** Comprehensive solutions for office buildings, retail spaces, and industrial projects, ensuring functionality and aesthetic appeal. - **Renovation & Remodeling:** Expert craftsmanship in transforming existing spaces to enhance usability and style while preserving historical significance. - **Project Management:** A holistic approach to managing every aspect of the construction process, ensuring projects are completed on time and within budget. - **Sustainable Building Practices:** Commitment to eco-friendly construction methods and materials, promoting sustainability in every project we undertake. **Why Choose Us?** - **Expert Team:** Our skilled workforce includes experienced architects, engineers, and craftsmen who share a passion for quality and innovation. - **Quality Assurance:** We adhere to the highest industry standards, ensuring that every project is executed with precision and attention to detail. - **Customer-Centric Approach:** We prioritize open communication, collaboration, and transparency, making the client's vision central to our work. - **Local Expertise:** With a deep understanding of regional architectural styles and building regulations, we are well-equipped to navigate the intricacies of Italian construction. **Vision:** Our vision is to be a leader in the construction industry, renowned for our dedication to quality, customer satisfaction, and innovative building practices. We aim to spearhead projects that not only meet contempor
Excellent!! Really nice & polite did the job on time and more! I will use them next time! Highly recommended.
Henderson & Kent Builders
Cellar & Basement Conversion
Henderson & Kent Builders Ltd provide an excellent service for all aspects of building works covering Hull and surrounding areas, weather your looking for full new builds, extensions or renovation works were more than happy to provide a no obligation quote.
At ICON_Interiors , we are a family-oriented construction business with over 15 years of experience delivering high-quality building services. From kitchen and bathroom installations to full house renovations, loft conversions, and restaurant refurbishments, we pride ourselves on being able to take on projects of all sizes—no job is too big or too small. Our team brings a vast knowledge of various trades, allowing us to handle all aspects of construction with confidence and skill. We also collaborate with a trusted network of specialist tradespeople to ensure every project is completed to the highest standards. Whether you're planning a small renovation, a major extension, or any construction work in between, we are committed to delivering exceptional results. With numerous satisfied clients, glowing references, and a portfolio of completed projects, we are confident that we can bring your vision to life. Contact us today to discuss how we can help with your next project!
Sam did a really good job fitting the door, especially considering we have an old Victorian house where there isn't a straight wall or door opening in the whole house.
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.
CG Building LTD , it is a small company , established back in 2016. We carry work all around UK , but now we are based in Somerset and we cover all surrounding areas. •We take small & big jobs ! •We do all aspects building •We offer a friendly and reliable service, working closely with the client to make sure they have a clear understanding of the works that are being carried out throughout the process. -Renovations- - Kitchen and bathroom insulations- Plastering. - Painting and decorating. - Carpentry-
Very professional. I would definitely recommend this trades person. Good pricing and great work. I am keeping his contract for work in the future.
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!
I am based out of Gloucester, but willing to travel to surrounding cities. I am extremely confident in my skill set. When it comes this trade, nothing beats the experience I have.
Decided not to proceed as the cost seemed excessive.
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