The quick way to find a local Cellar & Basement Conversion specialist in Coulsdon
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.
'%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}
Welcome to Aurora Skylights and building services.We are a family run building company and pride ourselves on customer care as can be seen in our ratings. Please check out our new website at Aurora skylights.
Marcus did a great job replacing our Skylights with electronic Velux windows. He knows his stuff! thanks.
Rimi construction limited ! Guaranteed hight quality job with the best prices .
Very happy with Rimi. He at all times came up with ideas and solutions. We had a rear garden job. Involved brick work, decking, retiling, soil work,painting, creating new landscape overall. He did it professionally and in time. He was patient with delays in material supply and kept following up. Overall quite pleased with the end result
Carswells construction & plumbing has been established over 10 year for a during that period of time we have built our business on reputation, word of mouth and dedication in order to provide our customers with the best possible services in all Building works specialise in extensions all building work & bathroom fitting.
I recently had Luke and his team widen an opening between two rooms in my property, which was a sizeable job requiring the installation of a steel beam. The work was managed efficiently, and great care was taken throughout the project. I’m very pleased with the results and would highly recommend Luke and his team for their professionalism and attention to detail.
Grigore
Cellar & Basement Conversion
Grigore is your all-in-one building specialist, offering complete services from start to finish. Whether you’re building a new house from the ground up or need expert help with plumbing, bathroom fitting, electrics, or general renovations — we do it all. With a strong focus on quality, reliability, and craftsmanship, Grigore handles every aspect of construction with professionalism and care. No job is too big or too small — from full builds to the smallest details, we’re here to get it done right. Grigore – Skilled. Trusted. Complete Building Services.
Bisley Builders LTD
Cellar & Basement Conversion
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.
DC Building
Cellar & Basement Conversion
I have been working as a builder from 2010 with good experience and knowledge about all tipe off contruction ! we undertake all tipe off jobs small or big ! I have my own team and always looking to make our client's happy ! reliable and always there in time thanks !
At TS Property Maintenance LTD we provide comprehensive home maintenance solutions to keep your property in prime condition. Our team of skilled professionals are dedicated to deliver top-notch services that ensure the comfort, safety, and functionality of your home. Whether you need routine maintenance or specialised repairs, we’ve got you covered. www.sthomemaintenance.com Insta- sthomemaintenance
Very professional work, and to a high standard. Very polite and extremely pleased with the work. I would highly recommend this gentleman
FM Property Services
Cellar & Basement Conversion
At our company, FM Property Services , construction is more than just building — it’s about creating spaces that our customers can trust, enjoy, and feel proud of. With over 15 years of experience, we are committed to delivering high-quality work while making sure every client feels valued and satisfied. We understand that every project is important, whether it’s a small job or a large development. That’s why we work closely with our customers, listening to their needs and turning their ideas into reality. Our team focuses on clear communication, reliability, and attention to detail from start to finish. Customer satisfaction is at the heart of everything we do. We aim not only to meet expectations but to exceed them by delivering projects on time, within budget, and to the highest standards. For us, a happy customer is the true measure of success — and we are proud to build lasting relationships along with strong, dependable structures.
We are North London Based Building Company offering the following services: Carpentry/Joinery,Painting/Decorating,General Builduing work. Our motto is : ALWAYS AIM FOR PERFECTION
Zoltan was great. He took the time to design and plan with us, had a lot of patience for working out the detail... he was very clear in giving us timing brackets and delivering within that time. He loves what he does, and that is very visible in the quality of the carpentry and joinery he delivers. We would definitely recommend him to anyone as we are very happy with the results.
TYBIM is a well-established company which has built up a first-class reputation in the construction and property maintenance sector by successfully delivering high-quality services and projects. Our core values are quality and efficiency.
(The work turned out to be considerably larger than originally thought). Everything about this company was excellent. There were no extra charged. I would recommend these people based on our experience with them.
An builders & refurbishment We do all aspects off building trades To a good standard We have good team players from blokes to women Thank you so much for looking and using our services
Top man for sorting this, showed up on time and got the job done quick, sorry it's taken so long to leave a review, will keep you in mind next time I need things sorted.
We are a small family run business, our services include New builds, lofts, extensions, refurbs, we also take on small refits kitchens, bathrooms, gardens, structural alterations and ground works, plumbing and electrical. We aim to provide a comprehensive build package under one umbrella. Since opening our business in 2016 our main principle is "never cut corners or standards". We have managed to grow the business in the last few years immensely and establish ourselves as a recognised name. We aim to minimise stress for our clients by offering our expertise in all areas of the construction process and undertaking comprehensive project managing services with design consultation service also available throughout your project. We can provide all the services above by our own in-house team not 3rd parties or sub contracting. If you would like to know more about the work we do or would like a quotation for a project, please send us a message from the contact page or give us a call. We aim to respond to all queries within 48 hours.
i used julian for the job i wanted done. it was completed in a couple days. he was on time and conscientious.really happy with the result.
Raimcon Consultants
Cellar & Basement Conversion
We are artistic professionals in our job and we’re flexible… We try to finish our jobs in the lease amount of time and also would be very reasonable on pricing.
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.
We are pleased to continue providing a professional and dependable service to all our clients, fully recognizing the essential role that high-quality standards contribute to our success. Looking forward, we anticipate that the robust relationships we are cultivating will result in an increased number of satisfied clients, fostering further recommendations and sustainable growth.
Fedor and his team are polite, hard-working and extremely talented. It was a complicated job and Fedor handled it brilliantly. We are absolutely delighted with the beautiful London Stock brick wall that has been built. We would definitely recommend Fedor and Cuicut Construction, and will certainly use them again in the future.
FAKU Building Services
Cellar & Basement Conversion
General maintenance with many years experience on plumbing and carpentry and decorating City&guilds qualification
KCTLondon is a design-based Construction firm operating from Greater London, delivering quality services to clients’ satisfaction and within budget. Our products have remained high-end but our prices are competitive giving us the edge over many others.
I was very pleased with the work done. All the tradespeople were very helpful and pleasant We were very pleased with the works.
We have been working on building projects for last 8 years Wood floors Bathrooms Painting & decoration Garden tiles
Not recommended
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.
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!
ROTHSCHILD CONSTRUCTION LTD
Cellar & Basement Conversion
Rothschild Construction Ltd. is a well-established carpentry and construction company based in Surrey, boasting over 25 years of experience in the industry. Specializing in general carpentry jobs, full project management, conversions, and cabinetry projects, the company is dedicated to delivering high-quality craftsmanship and comprehensive construction services. With a wealth of expertise accumulated over decades, Rothschild Construction Ltd. is equipped to handle a diverse range of projects, from smaller carpentry tasks to larger and more complex construction endeavours. The company's commitment to excellence is reflected in its meticulous approach to project management, ensuring that every detail is carefully considered and executed to meet or exceed client expectations. Whether clients are seeking skilled carpentry work, complete project management services, property conversions, or custom cabinetry solutions, Rothschild Construction Ltd. prides itself on providing top-notch service. The company likely has a proven track record of successfully completing projects, earning the trust of clients through reliability, professionalism, and a focus on delivering outstanding results. As a reputable construction company, Rothschild Construction Ltd. may also emphasize collaboration and communication throughout the construction process, ensuring that clients are informed and involved in decision-making at every stage. The company's dedication to customer satisfaction and its extensive experience make it a reliable choice for individuals and businesses in Surrey looking to undertake construction or carpentry projects.
'%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