The quick way to find a local Cellar & Basement Conversion specialist in Sydenham
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.
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.
Great job good price
BUILD SAFE LTD
Cellar & Basement Conversion
Hello, We are BUILD SAFE HOMES LTD Building contractor with 20 years of experience -Extensions -Loft Conversions -Kitchen fitting -Bathroom fitting -Plumbing -Electrical -Tiling -Carpentry -Decoration -Decking -Driveways -Garden offices -Scaffolding -Roofing All works are insured and covered by 12 months warranty. Please shortlist our company and we will be delighted to assist you with your building project! Regards BUILD SAFE LTD
We as a company we take on all roof, pitch or flat and lead roofs. We also do all lead work and lead welding. No job is to big or small for us we cover all new roofs and repair. We take on all work we do all fascia and guttering as well. We do gutter and fascia cleaning. We like to help everyone out so if you want any advice or a free quote please get in touch. We done all kinds of building work from garden wall to extensions we do all landscaping and patio. We can do all your fencing. Weather it is a small job or a big job we will look after you all through the process ?? Many thank from G.Scott roofing and building services
Simicus Construction LTD
Cellar & Basement Conversion
This is Simicus Construction Ltd, we are a team of builders with over 20 years of experience in the Construction Industry.
General Builder 19yrs in the trade Highly skilled - standard to high end jobs
Good job and good knowledge of the issues at hand. Competitive on price. Good communication during and after job.
S&D Construction Services is a premier general construction business with over of 23 years of Experience in the construction industry, we have established ourselves as a leader in delivering comprehensive construction services with a wide range of sectors including residential and commercial projects across London Our mission is to provide exceptional construction services and client-focused approach to every project we undertake
Fantastic job adding textured render around our newly fitted patio doors and on a blocked up old door. Was a particular finish we were looking for and the match was spot on. Highly recommended
We aim to be a world class Construction Company providing efficient affordable, sustainable, cost effective services of highest level of quality. We undertake all projects, big or small and specialise in major renovations including; Extensions – Loft Conversions – Restoration & Alterations Garage Conversions – Landscaping & Patios – General Building Work Renovating a property can bring a new lease of life to your home with the feeling that you live somewhere new without having moved. Whether it's a major remodel by knocking down walls and building new ones to change the entire look of your home, to simple and subtle updates and upgrades like new floors, new doors, a modern new kitchen or a stunning bathroom, using modern materials we can help you create your ideal living space.
Dragos was very efficient, reliable and flexible, 100% would recommend
'%3e%3cpath%20fill-rule='evenodd'%20clip-rule='evenodd'%20d='M12.5%2020.392a1%201%200%2001-.54.888l-5.274%202.73a1%201%200%2001-1.435-1.109l1.494-6.588a1%201%200%2000-.306-.964l-4.723-4.254c-.65-.586-.287-1.666.585-1.74l6.105-.514a1%201%200%2000.846-.629L12.5%200v20.392z'%20fill='%23F7DB34'%20/%3e%3c/g%3e%3c/svg%3e){kind=small}
At Optimal Finishes , we understand that choosing a contractor is a big decision. That's why our team of specialists and multi-skilled tradesmen is committed to delivering high-quality work with integrity for over 25 years . With a strong record of positive reviews from satisfied customers, you can confidently rely on us. We provide clear, competitive quotes and stick to them—no surprises. We proudly accommodate services for both residential and commercial clients. Our services: -Painting Interior and Exterior Painting Mould and Damp Control -Flooring Installation Laminate, Vinyl, Hardwood, and Engineered Flooring Removal and Installation. Underfloor Heating Herringbone -Tiling Wall and Floor Tiling Splashbacks Tile removal and replacement Bathroom installation Exterior tiling Wet room installation Underfloor heating Swimming pool tiling -Carpentry Bespoke Furniture and Fixtures Doors and Windows Staircases Kitchens -Plastering Decorative Cornicing / Plasterwork Dry Lining & Plasterboard - Installation and Repair Internal & External Rendering Plaster Skimming Polished / Other Plaster Finish Screeding/ Standard Coving -Roofing Chimney repair Clean gutters Roof cleaning Flat roofing Gutter installation and repair Pointing Roof inspection, Installation and repair Solar panel installation Why Choose Us: Our team is passionate about delivering great results. With a 9.8/10 rating from local customers, we take pride in our reliability and quality. We know every project is unique, so we work closely with you to make your vision come to life. Using top-notch materials, we ensure a beautiful, long-lasting finish. Plus, we value your time and strive to complete every project on schedule, making the whole experience as smooth and enjoyable as possible! Ready to transform your space? Contact us for a free quote within 24 hours. Let's discuss your project, and we'll provide you with a detailed estimate.
Great team, great work, brilliant service. I asked got my daughters room to get split with a partition wall and they done an amazing job. They was thorough, fast, great work. Really polite, great communication and would definitely use for future work
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
*Professional Summary:* After obtaining a degree and purchasing my first home, I quickly realised that I had a knack for DIY and home improvement. This passion led me to retrain in various trades, where I honed my skills and developed a deep understanding of the construction industry. Leveraging my hands-on experience, I transitioned into project management, where I now hold significant qualifications. Today, I use my expertise to bridge gaps in projects as I work towards securing larger industrial contracts. My journey from DIY enthusiast to skilled PM has equipped me with a unique blend of technical and managerial skills, allowing me to excel in both the planning and execution of complex projects. *Business Philosophy:* At our company, we believe in valuing the skills and dedication of our tradesmen. Each team member not only earns a competitive wage but also benefits from a share of the company's profits at the end of the calendar year. This approach ensures that our workforce is motivated to deliver exceptional quality on every project. We don't work cheap; instead, we focus on delivering precisely what we promise, ensuring that our clients receive top-tier results and our tradesmen are rewarded for their hard work and craftsmanship. *Commitment to Quality and Safety:* We take our responsibilities seriously. Our company is fully insured, and our team is highly competent, holding a Safety Schemes in Procurement (SSIP) certification. We are committed to upholding the highest standards of safety and professionalism in every project we undertake. This commitment reflects our dedication to delivering not just quality work, but also a secure and compliant working environment for all involved. Our company operates on the principle that in any project, you can have it good, fast, and cheap—but only two at a time. This philosophy guides our approach to delivering quality work while managing client expectations. If you want something done quickly and to a high standard, it won’t be cheap because quality and speed require skilled labor and premium materials. Alternatively, if you need something done quickly and on a budget, you might have to compromise on the level of quality. Lastly, if quality and cost are your priorities, the project will take time, as we won’t cut corners to rush the job. This principle ensures that we remain transparent with our clients. NOW LETS GET TO WORK!
The service was good as the trader responded immediately however did not use him as he took long to respond
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
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.
Acob projects
Cellar & Basement Conversion
Acob Projects Limited offers a wide range of services from house extensions to new builds, refurbishments, outbuildings and conversions. Whether the project is big or small we pride ourselves on producing outstanding quality while building and maintaining great customer relationships. If you plan to carry out house renovation to give your home a new lease of life or to build your dream home, Acob Projects Limited comes with innovative ideas and a highly skilled team ready to make your dream reality.
Avion Homes LTD
Cellar & Basement Conversion
At Avion Homes, we specialise in new build homes delivering quality housing from concept to completion. Whether you're a landowner, investor, or first-time buyer, we offer a complete service that covers the full construction life cycle: from early-stage planning, design coordination, and procurement, right through to handover. As TrustMark and Federation of Master Builders (FMB) members, we’re committed to the highest standards of professionalism, reliability, and workmanship. Every project is backed by Premier Guarantee structural warranties, giving you long-term peace of mind. We combine the hands-on care of a local builder with the systems and structure of a professional developer ensuring your vision is delivered on time, on budget, and built to last. From land to home we make it happen.
Eley Plastering are a trusted, professional business with over 16 years experience. We pride ourselves on our quality workmanship and our attention to detail. We offer exceptionally high standards at very competitive prices. All work is fully guaranteed.
We hired Eley Plastering for some Render work and our home now looks beautiful. Very happy with the outcome. Robert was professional and reliable. We have contracted them for further work throughout the summer to further improve my home. Would recommend to anyone.
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.
Nik did a great job with the shower. His team and himself worked efficiently, dealt very well with unexpected problems and were communicative and open about what needed to be done, all for a very reasonable price. Would definitely hire again and recommend to others!
We have been working at this trade for over 15 years. My company and works people hold a number of different NVQ qualifications such as electrical, engineering, railway engineer, civil engineering. We take customer service very seriously and we ensure to reply as soon as possible when someone contacts us. We also ensure we give a fair deal for a great service in return.
We hired Cani Building Services to replace the front stairs and pathway of our Victorian home with granite pavers in the spring of 2025. When evaluating the builders it was important to us that we found somebody who was professional, reliable, and detail-oriented. Durim offered a competitive quote and promptly started work. ?He completed our job to a high level of quality within a week’s time, and we are very pleased with the outcome. We would absolutely recommend his services to others!
Its quality time! With over 10 years experience, tens of finished jobs and tens of happy clients, I am a landscaper who can manage any job. Big or small, easy or complicated is never a problem for me. For any details don't hesitate to contact me.
Work that took place was amazing and recommend IA trader to anyone that needs work done.
Fortune Construction was funded in 2005 by CEO Zygmunt. In 2014 the CEO partnered with Anna to implement the business on providing a stronger customer-focused approach, services and a constant quest for top-class quality, which has enable the company to sustain leadership in its major line of business. Fortune Construction is based in South London but works all around London on general building and refurbishing.
Zygmunt from AP South London did works in my house and fixed my fence. I got 3 quotes and went with AP South London because Zygmunt thoroughly explained what needed to be done and gave me options. His costs were reasonable and he was both friendly and professional. I have further works to do and would definitely go with them again. Thank you.
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.
Hi, we are a group of 3 hard working people who are experienced in gardening and landscaping jobs for more than 5 working years.
Great Company! Created exactly what was briefed fast and efficiently. Good communication,collaboration, careful and tidy, would thoroughly recommend! -we redesigned our garden to remove old beds and structure, built new curved surround wall and new patio, very happy.
'%20rx='20'%20/%3e%3cg%20fill='%23FFF'%3e%3cpath%20d='M29.376%2016.914c-.555%200-1.006.454-1.006%201.013v37.416c0%20.578.472%201.014%201.097%201.014h34.109a1.007%201.007%200%200%200%20.972-.83%201.012%201.012%200%200%200-.161-.76l-6.446-9.416c-.375-.548-.567-1.085-.586-1.642-.034-.977.516-1.952%201.402-2.483%204.8-2.878%205.808-7.575%205.808-11.009%200-7.335-5.925-13.303-13.207-13.303H29.376ZM63.594%2059.75H29.467c-2.505%200-4.467-1.936-4.467-4.408V17.927c0-2.43%201.963-4.408%204.376-4.408h21.982c9.14%200%2016.577%207.49%2016.577%2016.698%200%205.879-2.46%2010.687-6.944%2013.607l6.17%209.017c1.37%202.002.868%204.752-1.12%206.132a4.336%204.336%200%200%201-2.44.778h-.007Z'%20/%3e%3cpath%20d='M38.767%2027.797c0-.749.603-1.357%201.347-1.357h6.427c3.979%200%206.426%201.72%206.426%205.099v.123c0%203.132-2.325%205.098-6.365%205.098h-3.848l-3.985%203.998V36.76h-.002v-8.963'%20/%3e%3c/g%3e%3cpath%20fill='%23FFF'%20fill-rule='nonzero'%20d='M18.176%2069.2h2.156v3.878h3.976V69.2h2.156V79h-2.156v-3.934h-3.976V79h-2.156v-9.8Zm16.428%207.98c.43%200%20.826-.08%201.19-.238a2.72%202.72%200%200%200%20.931-.658c.257-.28.457-.604.602-.973a3.21%203.21%200%200%200%20.217-1.183V74.1c0-.42-.072-.817-.217-1.19-.145-.373-.35-.7-.616-.98a2.96%202.96%200%200%200-.945-.665%202.873%202.873%200%200%200-1.19-.245c-.439%200-.838.08-1.197.238-.36.159-.667.378-.924.658s-.457.604-.602.973a3.21%203.21%200%200%200-.217%201.183v.028c0%20.42.072.817.217%201.19a2.959%202.959%200%200%200%201.554%201.645c.36.163.758.245%201.197.245Zm-.028%201.988a5.343%205.343%200%200%201-2.086-.399%205.187%205.187%200%200%201-1.645-1.078%204.823%204.823%200%200%201-1.078-1.596%205.029%205.029%200%200%201-.385-1.967V74.1c0-.7.13-1.356.392-1.967a5.075%205.075%200%200%201%201.085-1.61%205.05%205.05%200%200%201%201.652-1.092%205.395%205.395%200%200%201%202.093-.399c.756%200%201.451.133%202.086.399a5.187%205.187%200%200%201%201.645%201.078c.462.453.821.985%201.078%201.596.257.611.385%201.267.385%201.967v.028c0%20.7-.13%201.356-.392%201.967a5.075%205.075%200%200%201-1.085%201.61%205.05%205.05%200%200%201-1.652%201.092%205.395%205.395%200%200%201-2.093.399Zm8.14-9.968h2.324l2.576%204.144%202.576-4.144h2.324V79h-2.142v-6.398l-2.758%204.186h-.056l-2.73-4.144V79h-2.114v-9.8Zm13.152%200h7.392v1.918h-5.25v1.988h4.62v1.918h-4.62v2.058h5.32V79h-7.462v-9.8Zm13.866%209.94a6.49%206.49%200%200%201-2.198-.385%205.817%205.817%200%200%201-1.96-1.183l1.274-1.526c.448.364.908.653%201.379.868.471.215.987.322%201.547.322.448%200%20.796-.082%201.043-.245a.771.771%200%200%200%20.371-.679v-.028a.85.85%200%200%200-.077-.371.778.778%200%200%200-.294-.301%203.079%203.079%200%200%200-.602-.28c-.257-.093-.59-.191-1.001-.294a12.201%2012.201%200%200%201-1.344-.406%203.787%203.787%200%200%201-1.022-.553%202.237%202.237%200%200%201-.651-.819c-.154-.327-.231-.733-.231-1.218v-.028c0-.448.084-.852.252-1.211.168-.36.404-.67.707-.931a3.183%203.183%200%200%201%201.085-.602c.42-.14.882-.21%201.386-.21a5.86%205.86%200%200%201%201.981.322%205.743%205.743%200%200%201%201.659.924l-1.12%201.624a7.1%207.1%200%200%200-1.288-.707%203.292%203.292%200%200%200-1.26-.259c-.42%200-.735.082-.945.245-.21.163-.315.366-.315.609v.028c0%20.159.03.296.091.413.06.117.17.222.329.315s.376.182.651.266c.275.084.623.182%201.043.294.495.13.936.278%201.323.441.387.163.714.36.98.588.266.229.467.497.602.805.135.308.203.677.203%201.106v.028c0%20.485-.089.917-.266%201.295a2.66%202.66%200%200%201-.742.952%203.353%203.353%200%200%201-1.134.588%204.924%204.924%200%200%201-1.456.203Z'%20/%3e%3c/g%3e%3c/svg%3e)
Get our app for homeowners
- Send messages and get notifications from tradespeople
- Add photos to get more accurate quotes
- View tradespeople's profiles