The quick way to find a local Cellar & Basement Conversion specialist in Betchworth

P J Waterproofing

Cellar & Basement Conversion

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We are a family run and working business. Established over 30 years who pride ourselves on reliable and clean quality work. We are a sovereign approved contractor, an HM appointed PCA company. Specialists in Basement &Cellar Tanking Membrane/ Woodworm/Mould Control /Radon Gas / Thermal insulation/Rising Damp.We supply GPI insurance backed guarantees backed by National Warranties Qanw.

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Reviewed by David on 4/3/2014

Paul and his team were fantastic. My wife and I have always been a bit apprehensive about having people in our house when we are out, but we had no worries with Paul and his team. They were very hard working, reliable and trust worthy. I would absolutely use them again as the quality of what they have done is outstanding. They take pride in their work and it shows as they always made sure they cleared up at the end of each day. Thanks guys, the basement looks incredible.

Omni Electrical Services

Cellar & Basement Conversion

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Hold the latest qualifications from City & Guilds and registered under the NICEIC domestic installer scheme, which makes all of the work compliant with Part P. All work comes with a 12 month guarantee & we carry £2m Public Liability Insurance.

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Reviewed by Simon on 3/12/2019

Colin and team took on a tough job refreshing a top floor bathroom and adding in a shower to a compact space with low eaves,. Despite encountering a few surprises (lack of isolation valves, dead pigeons etc) the job was done in good time and on budget.. Colin worked with me to provide options on fitments to suit style & budget and was honest when I was better off purchasing direct rather than through him. The job wasn't rushed and the finish is excellent. Also took on some external wiring work as well.

Bisley Builders LTD

Cellar & Basement Conversion

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Bisley Builders bring over 40 years of experience across all areas of construction, delivering high-quality workmanship on projects of all sizes. We specialise in extensions, refurbishments, new builds, loft conversions, and all aspects of building and groundworks. Our expertise also covers hard landscaping and driveways, creating durable, practical, and visually appealing outdoor spaces that add long-term value to your property. From initial planning through to completion, we pride ourselves on reliability, attention to detail, and clear communication, ensuring every project is completed on time, within budget, and to the highest standard.

ASW BUILDER

Cellar & Basement Conversion

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I have been doing building work now for the last 15 years I cover all types of building work to extensions, alterations conservatories, Landscapeing renovation, Plastering I enjoy doing different types of projects including the awkward stuff if your interested in any work being done please let me know I am happy to take a look and talk you through the jobs and different ideas Many thanks Andrew wall Asw Builder

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Reviewed by Alex on 1/1/2026

Excellent build quality, transparency and communication.

Monta Ltd

Cellar & Basement Conversion

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We offer bespoke furniture and construction to commercial & private clients. Fully equipped manufacturing facility with spray shop / in house tinting machines for paints and polished plasters. We offer: Home extensions Loft conversions Structural work Underpinning Internal refurbishment Basements Furniture, made to measure: Bathroom cabinets Kitchens Wardrobes and other bespoke furniture.

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Reviewed by Darren on 9/5/2025

Monta Ltd where very professional and extremely helpful throughout our bathroom refurb. They offered advice throughout the process and never gave any hard sale but explained the options and what it would mean and cost for any changes to what we wanted. The final outcome was a beautiful bathroom that makes us feel like we are in a top class hotel.

Bradley Steel

Cellar & Basement Conversion

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Over 20 years experience within the construction industry , all work fully gauranteed and carried out to the highest standard .

ML Contractor

Cellar & Basement Conversion

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Hi iam Mariusz Builder/Multiskils I experience 34years on Building site my specialities is Tiling/Bathroom/Fiting Bathroom staff.Kitchen tiles etc.Kitchen Fitting. Plumbing. Electric. Extension loft conversion.Carpentry. Wooden Floor Vinyl etc. Brick work/Pointing. Plastering/skimming. Decoration/Painting and more more task thanks Mariusz ML Contractors

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Reviewed by mark on 24/12/2025

Mariusz, (ML contractors), is an exceptional artisan. We needed repairs to a kitchen work surface and replacement of the mixer tap for our rental flat. See photo, he replaced a section of the work surface and fitted this and made good the repairs. So we also got him to decorate 2 rooms again the work was brilliant, efficient and reasonably priced. Can't recommend highly enough!! We will definitely use his skills again.

Qaisar Construction

Cellar & Basement Conversion

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Qaisar construction deals in every aspect of building works, serving in this field since 2004. Qaisar construction specialise in Loft conversion, Extension, Whole house renovation, brick works, driveways etc. Qaisar construction has a team of 9 skilled workers. Our site can be visited for costumer satisfaction purpose. Qaisar construction believe in quality work than quantity. Best Regards.

Plum Building Services LTD

Cellar & Basement Conversion

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Plum Building Services Ltd is a building company based in London. We work for both landlords and private home owners on new builds, extensions, refurbishments, repair and maintenance. No job is too big or too small. Quality is our guarantee.

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Reviewed by Philippa on 28/10/2025

Andrey's Property Services

Cellar & Basement Conversion

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About Andrey's Property Services. Thank you for looking at our profile page here at Andrey's Property Services. We are a team of highly skilled multi-talented tradespeople and between us we can do pretty much all work required in your home to a very good standard. This can be confirmed by looking at our excellent reviews and pictures of our previous work. Some of the things that make us stand out from the rest - NO UPFRONT DEPOSITS We only ever ask for payment once the work is complete and you have had a chance to make sure you are totally happy with everything. WE DO EVERYTHING Why have multiple tradespeople or multiple companies working on the same job when we can manage the whole project start to finish and take responsibility and ownership for everything. REVIEWED & CHECKED We have been through numerous checks into our background by independent organisations including TrustATrader and others that you can find on our website Including criminal background checks, public liability insurance checks, necessary qualification checks. ALL WORK GUARANTEED At Andrey's we are so confident in the quality of our work that we offer a full one to ten year guarantee on any work we do, totally free of charge. This combined with our 1 million pound public liability insurance should give you full confidence in Andrey's Property Services.

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Reviewed by Martin on 12/5/2026

KINGSTON SURREY CONSTRUCTION LIMITED

Cellar & Basement Conversion

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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.

Latest homeowner review

Reviewed by John on 28/1/2026

We got Kingston Surrey Construction in to undertake a full ensuite refurbishment after too many leaks and drips over the years. They provided a competitive quote and were available to undertake the work quickly to suit our needs. They worked at a steady pace with a focus on doing it right rather than doing it quickly. Their communication was good and they were as tidy as you can be with such a job. Overall we are very pleased with the outcome of the work, many thanks.

Kh&n construction ltd

Cellar & Basement Conversion

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About KH&N Construction Limited ​With over a decade of hands-on experience delivering premium property fit-outs, we specialize in transforming spaces into elegant, functional sanctuaries tailored to the highest standards of design and craftsmanship. ​Over the past 10 years, we have led and completed a wide range of bespoke refurbishment projects in some of the most prestigious residential and commercial properties across the UK. Our work blends precision installation with a sharp eye for detail, using only the finest materials. We work closely with architects, interior designers, and clients to ensure a flawless finish every time. ​From custom stonework and high-spec tiling to smart tech integrations and luxury fixtures, every element is carefully executed to create a space that reflects sophistication and comfort. ​Our Core Strengths: ​Luxury Property Installation & Project Management: Delivering high-end results on time and within budget. ​Premium Materials & Brands: In-depth knowledge of sourcing and working with luxury fixtures. ​Smart Home Integration: Seamless installation of lighting, underfloor heating, and smart controls. ​Bespoke Craftsmanship: Expert handling of stone, marble, and high-spec tile work. ​Collaborative Approach: Working hand-in-hand with design and build teams. ​Discreet & Reliable Service: Maintaining clean, quiet, and respectful workmanship in occupied homes. ​Whether it’s a minimalist modern spa or a timeless classic retreat, KH&N Construction brings each vision to life with unmatched attention to detail and absolute pride in the final result.

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Reviewed by Phil on 8/7/2025

Brilliant service, arived on time and carried out the job in very quick time. Cleaned up after job compleet. Very happy to recomend.

Ion Seremet

Cellar & Basement Conversion

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hello, I am a responsible person, I have more than 10 years of experience in construction, painting and decorating, flooring, tiling, carpentry, plumbing, and more... I do my best to keep the client happy... contact me if you want a good quote for your work! I Regards:ION

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Reviewed by Trish on 15/2/2026

Ion did a wonderful job on our bathroom. He completely removed the entire existing bathroom back to the joists and rebuilt a beautiful shower room. I found him to be honest, trustworthy, hardworking and reasonably priced. I couldn’t recommend him higher.

North South Builders

Cellar & Basement Conversion

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North South Windows area home improvement company based in Cobham, Surrey. We specialise in the supply and installation of high quality windows and doors in timber, uPVC and aluminium. With over 15 years experience in the industry we pride ourselves on carrying out work of the highest quality. In addition, our team can provide a range of home improvement services from whole extensions to smaller tasks such as kitchen and bathroom renovation.

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Reviewed by Ian on 13/11/2023

The guys were very helpful and extremely patient and left me with a perfectly working door.

SGH Construction & Groundwork

Cellar & Basement Conversion

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SGH Construction & Groundwork have been established since 2016 we are a family run business that has been operating via customer recommendations. We pride ourselves on safely delivering the highest quality work for our clients. All of our staff are fully qualified for the job in hand. Please feel free to give us a try.

RCBS LIMITED

Cellar & Basement Conversion

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RCB Group Design and Build – Turning Your Vision into Reality At RCB Group Design and Build, we specialize in residential, commercial, and bespoke construction services. With 60+ years of combined experience, our team is committed to delivering exceptional craftsmanship, transparent pricing, and seamless project management from start to finish. Our Services Include: Design & Build: We manage your project from concept to completion, ensuring timely delivery and flawless results. Home Extensions & Loft Conversions: Maximize your space with custom-designed extensions and loft conversions that add both value and functionality. Renovations & Refurbishments: Tailored solutions for updating or transforming any part of your home or commercial property. Commercial Projects: Office fit-outs and retail space renovations designed to meet your business needs. Bespoke Design & Build: We specialize in custom homes and commercial spaces that reflect your unique vision and functional needs. Why Choose RCB Group Design and Build? 60+ Years of Experience: Our senior management team brings decades of expertise, ensuring high-quality results across residential, commercial, and bespoke projects. Fully Insured & Guaranteed: We are fully insured with £5 million public liability insurance and offer third-party backed guarantees through TrustMark and Federation of Master Builders. CCTV Project Supervision: Track your project remotely with real-time CCTV, giving you full transparency and confidence. Transparent Pricing: What we quote is what you pay—no hidden fees or surprises. Proven Track Record: Our portfolio and client testimonials showcase our commitment to delivering high-quality results on time and within budget. How We Work: Consultation & Design: We start by understanding your vision, needs, and budget to create a customized solution. Detailed Quotation: We provide a transparent quote and step-by-step plan to ensure everything runs smoothly. Project Execution: From securing permits to final touches, we manage all phases of the project with precision. Completion & Handover: We ensure you’re fully satisfied before we consider the job complete. Contact Us Today Looking for a trusted partner to bring your dream project to life? RCB Group Design and Build delivers exceptional craftsmanship, clear communication, and reliable service. Get in touch today for a free consultation, and let’s bring your vision to life.

Latest homeowner review

Reviewed by james on 10/11/2020

The team that worked on our build have worked extremely hard since starting and their attention to detail is excellent, the team really cared about the quality of their work which showed in the end result. They were always very friendly and tidy throughout the build, very pleased!