Rear House Extensions

Rear extensions London

Atomic Build offers bespoke rear extensions for London homeowners. Our approach to building is fully featured and tightly integrated, with design, engineering, and building solutions all available in a single package. If you want to add space to your single storey or double storey home, a rear extension might be the answer.

We are home extension specialists

We are home extension specialists who can add value and extra space to your home with a rear extension. A rear house extension can be the easiest option from a planning and design point of view. We also offer L shaped extensions, side extensions, and numerous other extension options, 

We offer a variety of extension solutions, including rear extensions for semi-detached houses and rear extensions for terraced houses. At Atomic Build, we combine experience and building expertise with a working knowledge of local planning laws, council requirements, and boundary and height limitations.

Design and Build London
Rear Extension London
Rear Extension Build London

Double storey / single storey rear extensions

At Atomic Build, we specialise in building and renovation projects to inspire your imagination. Our approach to building is based on customisation, with project consultants and team leaders communicating with you throughout the process. Rather than a combination of discrete services, we combine multiple services as a single integrated solution.

At Atomic Build, we combine vision and experience with attention to detail and technical expertise. The desired budget, scale, and timeline of your rear extension influence every part of the build, which is why we ask the right questions from the outset. Unlike many of our competitors, our extensive range of services helps us to recognise the bigger picture while also focusing on the details.

Our rear home extension process

After operating in Greater London for many years, we have developed a proven formula when it comes to rear extensions and other constructions. Our time-tested process is clearly defined in the following steps:

  • Free site meeting with detailed gap analysis

  • Pre-construction pack, including forecast construction stages and timescales

  • Feasibility study and detailed design development

  • Contract stages defined and suppliers listed

  • Building commencement and quality control system defined

  • Completion and deployment, including an insurance backed guarantee

Extension quality control

Once building of your extension commences, a quality control system is implemented, with an insurance-backed guarantee delivered upon completion. 

Recommended by our customers

We reached out to Atomic Build to help us with our single storey rear extension and can honestly say the planning stage was made so easy. Nikesh, Jhonny and the whole team were amazing, listening to what we were after, clearly explaining the process and the difficulties we may face but also what can be achieved. Loved their honesty and personal touch. Thank you
Ravinder Brar
Ravinder Brar
16:22 17 Jan 21
Had my rear extension done with Atomic Build and I was very impressed and happy with the work carried out from sorting out all planning permissions to the end results. Very professional and friendly team. The first and only company that I experienced punctuality and reliability with. Extremely happy with my extension, thank you so much. Will definitely recommend to my friends and family should they need any building work. 👍🏽👍🏽
Nazia Hashim
Nazia Hashim
17:09 03 Dec 19

We build quality rear extensions throughout London

Atomic Build operates throughout the Greater London area. We offer conversions, rear home extensions, and other construction services to residents and business owners, along with design, surveying, and engineering. We offer surveys for residential and commercial applications in the following locations: Richmond, Twickenham, Greenford, Harrow, Gerrards Cross, Hammersmith, Uxbridge, Iver, Watford, Pinner, Stanmore, Ruislip, Brentford, Teddington and many more.

If you’re looking for outstanding rear house extensions, home design and integrated building services in London, please contact our friendly team today.

Atomic Build is proud to be a member of the Federation of Master Builders (FMB).
9.77 / 10 - Average rating over 93 reviews in the last 12 months on Checkatrade
Check out our customer reviews on Checkatrade


– No obligation meeting at your site to establish project scope
– Gap analysis on existing information available
– Project quote and timeframes


Free site visit to one of our constructions sites, demonstrating our capabilities in managing construction activities.

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