Some of our top rated extension builders in South London
Sort by:
- Get in touch
Greenfield Building Solutions is a versatile building contractor offering a comprehensive range of services across residential construction and renovation. From full refurbishments and loft conversions to bespoke house extensions, they handle every aspect of the building process with precision and care. Known for their commitment to quality craftsmanship and client satisfaction, Greenfield Building Solutions works closely with homeowners to transform spaces—whether it’s modernising interiors, expanding living areas, or reimagining unused lofts into functional rooms. Their team brings expertise, reliability, and a tailored approach to each project, making them a trusted choice for turning property dreams into reality.
- Get in touch
Based in London, at Project Rams, we deliver comprehensive building and construction services, covering everything from high-end new builds and extensions to luxury interiors and bespoke finishes. We don’t just get the job done — we build with precision, style, and care. Every project is handled with a keen eye for detail, clean workmanship, and a calm, professional approach. What we offer: • Full building services from start to finish • Stylish, high-spec finishes • A respectful, tidy, and fully insured team • Clear communication and no hidden surprises We understand that inviting builders into your home is a big decision. That’s why we’re committed to making the process smooth, transparent, and stress-free. Most of our work comes through referrals and repeat clients, which reflects our dedication to quality and trust. We treat every home as if it were our own — with care, respect, and attention to detail. If you’re looking for a team that takes pride in delivering high-quality craftsmanship with finesse, shortlist us today and let’s have a chat.
- Get in touch
Breathable Lime are lime plastering and damp specialists for Victorian, period and listed homes across south and east London, Kent and Essex. Most damp in older properties isn't rising damp. It's moisture trapped in the walls by cement render, gypsum plaster and vinyl paints. Victorian homes have solid walls built to absorb a little moisture and let it evaporate. Modern, impermeable materials break that cycle, causing persistent damp, black mould, blown plaster and cold, musty rooms. We fix the root cause. Using Breathaplasta, a modern hemp lime plaster by Adaptavate, we restore your walls' breathability without cement, gypsum or plastics. It regulates moisture, resists mould, flexes with the building and sets in around two hours per coat, so it's far quicker and less disruptive than traditional lime. Every job starts with diagnosing the real cause of the damp. No unnecessary chemical damp-proof courses, injected treatments or tanking, just honest advice and a permanent, breathable solution. Free, no-obligation quotes.
- Get in touch
There is father and son business. We do most bricklaying, Extension, garden walls, renovations and home improvements. Experience 15 years. We are reliable and professionals on our job. Happy to give an estimate.
- Get in touch
Geometris is a construction company, founded on 2013 and based in London. We usually undertake construction works with contracts between £15,000-£2,000,000. Our team has very experienced builders, concrete workers, electricians, RIBA Architects and engineers, which allow us to undertake a large range of design and construction projects. We can deliver work of great quality in very short notice, with respect to each client needs.
- Get in touch
Build your dream home, at KB Kustom Builders LTD we aim to guarantee 100% customer satisfaction. With over 5 years experience in the industry we offer a range of services, specialising in landscaping, kitchens, bathrooms and full house refurbishments, both interior and exterior. We have built a great reputation with our clients over the years ensuring we deliver the highest quality of work and exceeding our clients expectations.
- Get in touch
One call does it all! We are a building and maintenance company we mainly do full refurbishments and extensions. Our maintenance team cover everything from changing lights to painting.
- Get in touch
I have been in this business for the past 15 years and usually work all around London. I am Handyman and painting is my specialty. I am perfectionist and very good attention to details.
- Get in touch
R.Hamandi Limited was established in January 2010 and firm in London, providing construction management, general contracting and consultant services. RHL specialises in construction and restoration of private and commercial sector in the heart of London including Residential refurbishment,Commercial,New build,Design and build, Basement construction, Kitchens specialists, Listed buildings, Sustainable buildings
- Get in touch
CONSTA Ltd - small construction company based in London, and characterises in flexibility to complete various jobs . There is list of different small or awkward completed jobs in our portfolio as well as more significant projects as loft conversions, extensions, full house reconstructions, new build and Passive House construction as well.
- Get in touch
We are an experienced, friendly and local building company who can help with all your home improvements, whether it be a new bathroom, kitchen, plumbing job, painting and decorating or a complete refurbishment We guarantee all our work and are covered by Public Liability Insurance.
- Get in touch
Hi, I’ve been a builder for over 25 years now, working on mainly domestic houses I specialise in plastering and tilting. I have also completed extensions and loft conversations from start to finish. Happy to have a chat about your needs!
