Extension Builders in South London | MyBuilder

Describe your job with details to view a tailored list of tradespeople.

Some of our top rated extension builders in South London

3415 Results

Sort by:

Mos Structure Ltd.
Rating: 5 out of 5
Extension Builder in South London
We are construction company based in London. The director of the Mos Structure Ltd. completed his education at the faculty of engineering in Turkey. After his education and his carier he started his own business in London. Totally he has been in this industry more than 14 years. We are a understanding and friendly team who always have a smile on our face. We have 100% customer satisfaction and have worked from great recommendations.
Get in touch
Latest review:
We needed a rear extension built with an internal courtyard. From day one when we first contacted Mert to get a quote he was professional and easy to talk to. His quote was good value for money. During the job he and his team were approachable, careful with our property and always easy to talk to and answer questions we had. The work Mert did was fantastic and our neighbours have already gone on to use him. We will get him back again for more work and highly recommend him.
Ed’s loft conversions Ltd
Rating: 5 out of 5
Extension Builder in South London
We specialise in loft conversions, Extension to a complete house refurbishment.
Get in touch
Latest review:
I engaged Edi to work on a full renovation and refurbishment of a 4 bedroom detached house with front and back gardens on Blackheath’s Cator Estate. Edi did an extensive amount of work, including stripping out; plumbing; plastering; windows installation; carpentry; and decoration. In addition, after commencing the property work, once the scaffold had been erected, following sensible advice, Edi and his team replaced the roof and fully insulated the attic; fitted additional electric points; rebuilt the garden patio; and replaced the flooring throughout, in addition to other important jobs including re rendering and pointing of chimneys, building new wardrobes in the main bedrooms; and upgrading the radiators. A new kitchen, and two new bathrooms have been fitted. The kitchen redesign meant knocking through a wall with the lounge to create a larger space. Edi is a highly skilled craftsman, who thinks creatively as he works to make best use of the space, including shelf fittings, and additional lighting for example. He has built some beautiful wardrobes, and the internal decorations have brightened up what was previously a rather shabby looking house. In addition to the above, I wish to commend Edi for his professionalism, courtesy, and passion for doing the best work possible. On all the site visits I attended, and every time I spoke with him on the phone, it was striking how much he cared about the work that he was doing, his desire to ensure that the house would look the best. I always left site visits with the feeling that he cared so much about the house that he could be safely relied on to give the best advice to enable us to make the right decisions. I also noticed that Edi and his team would take the upmost care to keep the property safe, tidy and in good shape throughout the project. He can be fully trusted to look after any site he works on. He is intelligent and careful when it comes to safety and security. It has been a pleasure for Edi and his team to work with us over a period of around 6 months, and he did so much to reduce the stress of a significant project so that we could always rely on him to work methodically, patiently and sensibly, and to make best use of the resources available. His pleasantness shines through, and everyone I know who has spoken to him has always provided me with the most positive feedback I have no hesitation in recommending Edi to anyone who wishes to engage him for future projects, and is most deserving of the good words that I and others that work with him have to say about him.
UKA HOUSING SOLUTIONS
Rating: 5 out of 5
Extension Builder in South London
Our company specialises in the design and installation of custom and high-quality loft conversions and house extensions across London and the M25. While offering a personalised service, we bring the skills and experience required to ensure your loft conversion is completed to the highest standard and agreed timeline. Whether you are looking to add value to your property or create more space, our team will handle everything from planning permission to architectural design and construction
Get in touch
Latest review:
Loft Conversion- 1 Aug 2025
Sami completed our loft conversion to a high standard, on time and within the agreed budget. He was respectful, supportive, and very knowledgeable. He offered helpful input and practical suggestions throughout the project. When I came up with ambitious design ideas that would have cost a fortune, he provided honest, pragmatic advice and suggested smart, cost-effective alternatives that saved us a lot of money. He communicated clearly, was easy to work with, and kept everything running smoothly. He also recommended trusted tradespeople when needed, all of whom did excellent work. In addition to the loft, Sami and his team completed other jobs around the house with the same high standard and care. I wouldn’t hesitate to recommend him — reliable, skilled, and genuinely committed to quality. A fantastic builder who takes pride in his work and delivers results you can trust. We’re absolutely delighted with everything he’s done.
Balham construction Ltd
Rating: 5 out of 5
Extension Builder in South London
Balham construction are a London based refurbishment and construction company that offer a wide range of services from full Property refurbishment to extensions and loft conversions and everything in between
Get in touch
Latest review:
Tom and the team completed a full renovation of my flat. This included refurbishment of my kitchen, bathroom and general redecoration. The team were extremely hardworking and punctual and no job was too difficult for them. I would highly recommend their services.
Swift Building Masters
Rating: 4.9 out of 5
Extension Builder in South London
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
Get in touch
Latest review:
Extensions- 5 Nov 2016
Leslie carried out the following works: chemical damp injection to walls on rear extension, reroute down-pipe, repair fracture on rear wall, install gutter hedgehog. Hopefully, this will resolve some of the issues we had with damp, a blocked down-pipe and an overflowing gutter. Leslie arrived on time on the first day but was delayed a few hours the next day. However, the work still was done within two days as expected. Thank you!
Complex Buildings & Renovations Ltd
Rating: 5 out of 5
Extension Builder in South London
Welcome to Complex Buildings & Renovations your top-tier construction and fit-out services in the heart of London with divisions in Devon and Somerset. With an unwavering commitment to excellence and a wealth of experience in the industry, we specialise in creating exceptional commercial and residential environments that redefine aesthetics and functionality. As your trusted building partner, we're dedicated to bringing your vision to life and ensuring your space exceeds expectations.
Get in touch
Latest review:
I had a bathroom leak. Contracted Complex building and renovations. Although they quoted a 25% higher price than other builders, I found them reliable, professional and trust worthy. They were prompt in their correspondence. They did the job within a short time frame and were clean and professional.
Prodec Construction ltd
Rating: 5 out of 5
Extension Builder in South London
With over 16 years experience our reputation has developed very soundly as a specialist building contractor. We work on many types of projects including domestic houses, health care sector, and housing developers. Our service is designed around delivering the highest standard and quality.
Get in touch
Latest review:
Painting & Decorating- 18 Jun 2025
Martin has done an excellent job for us. He is professional, polite and helpful.
REALTOP LTD
Rating: 5 out of 5
Extension Builder in South London
Realtop Ltd is a Commercial and domestic full refurbishment services to bring your dream space alive with our large experiences professional team, including decorators, interior designer, bespoke inspiration contractors, decorator, Flooring Installer etc.white walling, composite and hygienic cladding and door installation.
Get in touch
Latest review:
Hard Flooring- 21 Jun 2025
Brilliant job done by Vincento . Right from the first visit to the job completion very professional and done the job rightly . Will definitely recommend. Five stars.
Guildkey Builder
Rating: 4.9 out of 5
Extension Builder in South London
Welcome To GUILDKEY BUILDER's, We are a small company and specialise in: Loft conversions, Side and rear Extensions also double extensions and full refurbishments We also carry out small jobs such as kitchens fittings and bathroom fittings, developing properties into flats, We provide quality service to our customers. We want you to live in a better and secured Home
Get in touch
Latest review:
Extensions- 31 Jul 2025
Absolutely incredible from start to finish! Professional, knowledgeable and easy to work with. Managed to think on his feet and fix unexpected problems, gave advice and was always polite and friendly! My house is completely transformed & I’ll definitely be using Kaiser again for the next house Reno!
Molina & Hofmann Ltd
Rating: 4.6 out of 5
Extension Builder in South London
We are a small but long-standing team of experienced trades men. We have done extensions and conversions, and all jobs around renovation projects. Our detailed quotes explain the costs. We do not sub-contract jobs and if you have any questions, I will always be your main contact person.
Get in touch
Latest review:
Restoration & Refurbishment- 14 Dec 2016
Ended with a great result
DF Construction
Rating: 5 out of 5
Extension Builder in South London
DFGC are commercial and residential refurbishment specialists. We've created partnerships with high profile companies to complete large scale projects, in the South East of England - shown on my profile. We are known for a wide range of undertakings, from complete refurbishments, extensions, bathrooms, driveways, to name a few. There's very little we can't do, with regards to construction. We're a one stop shop for all your construction needs - we can take your vision and make it a reality.
Get in touch
Latest review:
Extensions- 13 Dec 2021
Couldn't recommend Domi & Emile enough. They have great building knowledge and kept us informed and up to date throughout the whole building process. The job was finished to a high standard and they even came back free of charge to tie up a few snags a few weeks later. Great builders and a great team!
Matt Spooner Carpentry
Rating: 5 out of 5
Extension Builder in South London
Over 15 experience in all aspect of Building works from domestic to commercial, including extensions and loft conversions. All interior works covered for example fitting doors, architrave, skirting, flooring. All exterior works covered for example all first fix carpentry, roofing, decking. All work carried out to a professional, tidy and to a high standard. Please do not hesitate to contact me.
Get in touch
Latest review:
Carpentry- 26 Aug 2020
Matt did a fantastic job for us fitting a kitchen and boarding out the attic. He was professional, courteous and really helpful in figuring out how best to help us. He listened to what we wanted and really understood what we were trying to achieve. As a result we were very happy with the result and plan to use his services again in the near future. Highly recommended.
LLC projects limited
Rating: 5 out of 5
Extension Builder in South London
At LLC PROJECTS LTD, we deliver high-quality building and renovation services across London, Surrey, and Hampshire. With over 16 years of experience in the construction industry, our team specialises in all aspects of building works, maintenance, and plumbing — from full refurbishments and extensions to kitchen and bathroom installations. We pride ourselves on excellent workmanship, attention to detail, and reliable project management from start to finish. Most of our work is carried out in-house to ensure consistent quality and high standards. Whether it’s a small repair or a large-scale project, we approach every job with professionalism, transparency, and care. Contact us today to discuss your next project and see how we can bring your vision to life
Get in touch
Latest review:
I recently hired LLC Projects Limited to refurbish my ground floor and add a new bathroom, and I couldn’t be happier with the results. From start to finish, the team was professional, reliable, and truly cared about delivering quality work. The new bathroom looks amazing, and the ground floor transformation exceeded my expectations. Communication was great throughout, and they kept everything on track and tidy. The crew was friendly, and they handled any concerns I had quickly. I’d definitely recommend LLC Projects Limited for any home improvement work—they’ve earned my trust, and I’ll be calling them again for future projects
MB Building & Management Ltd
Rating: 5 out of 5
Extension Builder in South London
We are building company with a focus on energy efficiency, air tightness and excellent build quality. Within the company there are two main areas of trade. One side predominantly focuses on high end full refurbs. The other is property management for landlords. Hence, we undertake a variety of jobs, ranging from handyman jobs and small roof repairs to basements and full new builds. We are mainly active in Battersea, Wandsworth, Clapham, Chelsea and Fulham.
Get in touch
Latest review:
Extensions- 23 Jan 2023
Monika, Mario and the team were excellent! Finished the job to a very high standard. Monika was all over the details and Mario was highly skilled and just got things done. Despite the project overrunning by a month or so (really not that bad vs target), we can not wait to work on another project with Monika again.
Lezha Building Ltd
Rating: 4.9 out of 5
Extension Builder in South London
LEZHA BUILDING LTD Hello my name is Astrit. I’m the Director of the company We have a lot of experience in different trade so my business started in Italy but from 2015 we are based in london do not hesitate to contact no matter small or large work, we will reach you wherever you are.Thanks 🙏
Get in touch
Latest review:
Tiling- 10 May 2019
As per the previous reviewer I don't usually hire tradesmen when there is only limited feedback, but given the glowing report I took the risk. And it proved to be a great decision. Astrit was great - clear communication, arrived when he said he would, sought our opinions on the key decisions and gave some great advice, before ultimately doing a great job for a reasonable price. A pleasure to deal with and will hire again for any future tiling work. Thanks Astrit.
swlbc ltd
Rating: 5 out of 5
Extension Builder in South London
SWLBC Ltd is an established, family run, local building company in SW11. We really care about our clients and aim to provide the highest quality, cost effective service, however large or small the project. From home improvement to renovation or extensions to your property, we can provide a comprehensive service. Please contact us to see if we can help you today and provide a free quote for your works.
Get in touch
Latest review:
Conversions - General- 3 Jul 2023
We chose SWLBC to refurbish a two-bedroom flat. This entailed complete redecoration, replacement of the flooring with a new engineered wood floor, moving old and installing new electrical sockets and light switches, running some new piping and replacing the heating system with a more modern and efficient one. The quote from SWLBC was very competitive and we are really happy with the quality of the work. The flat is transformed and it looks terrific. Ben Toone who is the proprietor of the company is very professional and helpful. He was easy to contact and responded to our questions quickly and thoroughly. We met some members of his team during the works and they are hard working and competent. They also cleaned up the site beautifully after they had finished. Thank you Ben and your team. We are delighted with your work and highly recommend SWLBC.