The quick way to find a local Cellar & Basement Conversion specialist in Sunbury-On-Thames

Post your job for free. Get quotes. Read reviews.

Over 10,000 rated tradespeople
are ready to help you get your job done

Over 3 million happy homeowners
have found a quality tradesperson

Over 1 million ratings
with 88,000 5* ratings in the last 12 months

Join our group of happy customers

Thousands of 5 star reviews

Read real reviews from customers about their service experiences.

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

Browse Cellar & Basement Conversion specialists

Take a look at our Cellar & Basement Conversion specialists profiles, read reviews and request quotes directly.

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

Eagle eye building LTD in an established, family run business with a wealth of knowledge & experience. Taking pride & care of all of your building needs. We cover all aspects of building and no job is too big or small. For more information, or a free quote, please feel free to get in touch with us.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Stephen on 22/11/2023

Great customer care and excellent standard of work. Delighted, thanks

We are a small company, specialising in supplying quality workmanship, to customers, all our installers have aquiared many years of experience, this includes electrician, carpenters, painters, floor layers , we specialise in garage conversions, and refurbishment work ,

Latest homeowner review
full starfull star
Reviewed by Sybil on 19/7/2025

DO NOT USE THIS BUILDERS THEY ARE ROUGH TRADERS

ES Building Services is a family run business with a team of highly skilled, well experienced and passionate professionals who puts your needs at the forefront of what we do. All our work is completed to the highest industry standards and compliance with current regulations is always met. We focus on providing a high end finish on all of our projects regardless of budget. We will make sure you are involved and understood at every step of the process, from design to completion. Whether it’s a simple maintenance job or a full internal refurbishment, we aim to provide a level of service that exceeds your expectations. Our predominant active contacts consist of bathroom and kitchen refurbishment work. We work alongside multiple industry leaders and have an excellent track record in providing high quality installations across London. With a skilled and mature team of professionals we have an abundance of experience in all areas of building services. We specialise in full internal refurbishments covering all aspects of the build: strip out, plastering, kitchens, bathrooms, plumbing, electrics and everything in between. With over 300+ 5* reviews accross all platforms, rest assured your property is in safe hands with ES Building Services. Kitchens Bathrooms Refurbishments Electrical installation + Everything in between NICEIC Aproved Contractor. GasSafe Registered Engineers. SafeContractor Approved.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Bernadette on 18/8/2025

We hired ES Electrical to fit our new Kitchen and also added a toilet and shower unit downstairs. From the begening we found Harry and his Team to be very professional but also had have a very friendly approach. They listerned to our concearns during the process of the instillation and also gave us some good advice and ideas. We found them to be very tidy with their work and respected our property. Overhall we are very happy with the outcome of our new Kitchen and Bathroom,hence we have giving this rating.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Dan on 22/7/2025

Hi, we are a group of 3 hard working people who are experienced in gardening and landscaping jobs for more than 5 working years.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Gazala on 17/7/2025

I had front drive paving done, quick and easy install, cleaned after them great service

We are proud to be a top rated, reliable and well respected company with a fantastic team of experts providing outstanding levels of service when it comes to plumbing painting tiling bathroom and kitchen fitting and full house renovations in London and surrounding areas. We carry out all types of work, no matter the size - from small plumbing maintenance jobs such as leaking taps or burst pipes and other domestic work, right up to large installations such as Full house renovation. All of our work is fully guaranteed and we offer professional and efficient Handyman services near you at a competitive cost. Our aim is total customer satisfaction. Not only do we retain our client's custom over many years, they also become our ambassadors recommending us to their relatives, friends, neighbours and business associates.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Wayne on 17/7/2025

Shout out to my brother from another mother. Pleasure having Nik and his boys Ray, Rod and John working on this project. Sometimes in life you have to take a leap of faith and Nik has 100% restored that faith with extreme commitment and professionalism on top of a beautiful finish.

At Summer Gardens landscape and Building contractors,we’re perfectionists who pride ourselves on customer service! Just ask our clients! We offer hard and Soft Landscaping, Gardening, Extensions and Outbuildings, Property Maintenance and lots more! Send us a message to find out how we can help you!

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Jenni on 19/5/2025

Reliable and super helpful!

Good, conscientious company. High quality work. Orders completed on time, professional service and honesty to their customers.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Richard on 15/5/2024

Work to retile the bathroom was scheduled promptly and delivered very well, on-time and in line with the quote. Wouldn't hesitate to use again. Tidied up and left things looking smart.

R&B refurbishment ltd For a decade, a Proficiency building company based in London has led all aspects of construction, luxury design and build. Whether you're looking to expand or refine your home with a loft conversion, rear or side extension, basement excavation, cellar conversion or a top to bottom refurbishment, our ethos is quality-first craftsmanship for the very best in residential design and build in London. When it comes to the quality and care that we put into every project, we think of ourselves as one of the leading building companies in London. This means that, as the right builder, we have the team, the expertise and the commitment to a high quality that sets us apart. Fully insured with Public and Employers Liability, Professional Indemnity, Contractors All Risk and high-risk basement works. We offer a 15-year guarantee on all of our structural building work. Proficiency only uses the highest quality building materials ensuring everything is built to standard and will last.

Latest homeowner review
full starfull star
Reviewed by Andrew on 19/5/2025

Fired him for appalling work, no-shows and delays; see his other bad reviews. He's a middle man; does not do any work; got others to do it like a plumber, then a tiler the next day; slow work made worse when someone messed up or did not show up. Ali only shows to deliver materials or check work. Quick to reply when wanting the job. Slow/no response once job starts thinking you wont cancel. Materials I paid not returned; take every receipt and check you keep/use every item as he will even for wipes/tape

A-S-Taylor established in 1994. specializing in drylining,plastering,demolition and alterations. we are a family run company with many years experience in all aspects of building works.profile picture and photos will be uploaded shortly.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Chris on 21/11/2024

only received one trade caller.

LITA CONTRACTORS LTD We are a family owned construction company with over 10 years of successful commercial and residential building projects. Based in London, we help clients with all kinds of construction needs, with existing plans or brand-new designs and solutions. Some of our services include: - Ground work - Drainage - Basements - First Fix & Second Fix - Kitchen & Bathroom Fit Out - RC Frame & Steel Frame We are specialised in delivering reliable and best quality services that will last a generation.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Runa on 3/6/2025

We specialise in general building: Landscaping Stone works Brick paving Brick work Plumbing & Heating Damp proofing Extensions Loft conversions

Latest homeowner review
full starfull star
Reviewed by Nigel on 1/7/2019

He turned up and surveyed the job very professionally, stated he would quote within two days, but I never heard back from him. Very irritated.

Professional & Affordable Building & Landscaping Services We've been experts in building and landscaping projects since 2013, ensuring reliability and excellence in every service we provide. We offer a wide range of professional services tailored to meet your specific needs. Whether you require comprehensive building solutions such as refurbishments, kitchen services, flooring, and porch services, or meticulous landscaping services including wood decking, driveways, astro turf, patios, and fencing installation, we've got you covered. With a proven track record of delivering excellence since 2013, and with our fully insured services, you can trust that your project is in capable hands, ensuring exceptional results every time. With us, you can relax knowing that your work is in good hands. We prioritise reliability and transparency, offering you peace of mind throughout the entire process.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Chris on 9/6/2025

Hard working, fast, good price and tidied up everything at the end of the job. Recommended.

WELCOME INPROJECT CONSTRUCTION - Building your future, one brick at a time. We have completed numerous projects, from small renovations to large commercial constructions. Our portfolio includes residential and commercial buildings, educational and healthcare facilities, and industrial constructions. Our mission at INPROJECT CONSTRUCTION Ltd is to provide our clients with exceptional construction services that exceed their expectations. We are committed to delivering high-quality workmanship, on-time completion, and cost-effective solutions. What sets us apart is not just our ability to construct buildings but our commitment to building relationships. We believe in honesty, integrity, and transparency in all our dealings with our clients. We value teamwork, professionalism, and continuous learning and improvement. We prioritize transparent communication, ensuring that our clients are informed and involved at every step.

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

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by marvelous on 25/9/2025

www.kbaconstruction.online MAKE YOUR HOUSE INTO A HOME TODAY WITH KBA CONSTRUCTION'S We are a building company with many years combined experience. working as Builder in London (UK), we help to make your house a home or property investment you can rely on.

Latest homeowner review
full starfull star
Reviewed by Mannie on 27/9/2025

Expert Damp Proofing & Property Preservation Services Home Building & Surveying Company is a leading provider of damp proofing, wall coatings, and property preservation services across the UK. With over a decade of experience, we specialise in protecting residential and commercial properties from moisture damage, mould growth, structural decay, and woodworm infestations. Our team of certified professionals ensures every project is completed with precision, using cutting-edge techniques and high-quality materials to enhance your property’s durability, appearance, and value. Why Choose Home Building & Surveying Company? - Over 10 Years of Industry Experience - Certified Damp Proofing Specialists - Tailored Solutions for Homes & Businesses - Guaranteed Long-Lasting Results - Competitive Pricing & Free Consultations Comprehensive Property Protection Services 1. Damp Proofing Solutions Moisture can cause severe damage to your property, leading to mould, decay, and structural instability. Our damp proofing services prevent water ingress and rising damp, ensuring a dry, healthy indoor environment. 2. External Wall Coatings Enhance and protect your home’s exterior with our advanced wall coatings. These weatherproof solutions defend against harsh UK weather, preventing cracks, damp penetration, and fading while improving kerb appeal. 3. Basement Waterproofing & Tanking We offer expert basement tanking services to prevent water damage and create dry, usable underground spaces. Whether converting a basement or preventing flooding, our waterproofing solutions provide peace of mind. 4. Mould Removal & Prevention Mould not only affects property aesthetics but also poses health risks. Our mould remediation services eliminate mould growth and prevent future infestations, ensuring a safer and cleaner living space. 5. Woodworm Treatment & Prevention Protect wooden structures from decay with our specialised woodworm treatment services. We use industry-approved solutions to eliminate infestations and prevent future damage to beams, flooring, and furniture. 6. Condensation Control Solutions Excess condensation can lead to damp walls, peeling paint, and mould growth. Our ventilation and insulation solutions help regulate indoor humidity, creating a more comfortable and damage-free environment. At Home Building & Surveying, we are committed to protecting and enhancing your home or business with industry-leading damp proofing and property preservation services.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Tanya on 15/9/2025

NORTH WEST LONDON RENOVATIONS is a well established, trustworthy, reliable and professional company. We serve Acton, Ealing, Hammersmith, Kilburn, Paddington, Brent, Westminster, Hampstead, West Hampstead, Primrose Hill and all surrounding areas of N, NW and Greater London. Our service is professional, caring, and high quality. Our customers rate us highly for our ability to stick to deadlines, and for the quality of our workmanship. We provide a professional service from the initial free quotation to the end professional finish. Our service is friendly, clean and tidy, and reliable. We consider no job as too large or too small and offer very competitive prices

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Nicholas on 2/2/2024

Had scaffolding up very quickly. Started job on time and finished in a week. Very impressive. Good communications and reasonable price.

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

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Puneet on 5/5/2025

Connor and his team did an excellent job plastering our room, hallway, and garage front. The quality of their work is outstanding, and they completed everything on time as promised. They were professional, efficient, and left everything clean and tidy. I’m very pleased with the results and would highly recommend Connor and his team to anyone looking for skilled and reliable plasterers.

Post your job for free

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople's profiles