Flat Conversions

Flat Conversion London

Atomic Build provides flat conversions and other bespoke construction solutions across Greater London. A flat conversion allows you to split an existing large home into multiple smaller units. While this process can be extremely profitable as a form of property development, it is also highly complex and difficult to navigate.

From planning permission and legal challenges through to design and construction, it’s important to deal with a trusted and experienced flat conversion company to ensure compliance and professional results.

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
The whole team have been great with our loft conversion. The first phase has been delivered on time and to a great standard. The team are clean and considerate. We are now looking forward to the next stages of the build
Dipan Bhatt
Dipan Bhatt
13:23 04 Dec 20
Atomic Build did a loft conversion for us this year with a dormer. We also had a bathroom fitted and some internal works. We are happy with everything. I would highly recommend this company.
Erkan Uyanik
Erkan Uyanik
16:18 27 Oct 20
Very happy with the progress of loft conversion work. Every detail has been taken care of work has be done to a high standard! Would highly recommend!
Birju Shah
Birju Shah
10:03 05 May 20
Atomic build and his team did my loft conversion, Amazing job im very happy with the qualityI will highly reccomend this company
enea koci
enea koci
05:31 01 May 20
We appointed Atomic Build Ltd to do our kitchen extension , loft conversion and bathroom renovation after a friend recommendation. We were impressed with the work quality and good value for what you pay. They have a invaluable design team which can help even if they did not do your planning application as some things are more practical on site. I can recommend them to anyone looking a practical loft conversion.
Prince Dhillon
Prince Dhillon
12:31 02 Apr 20
The team of Atomic build ltd did an amazing job ,They completed a loft conversion .Highly recommended
21:46 16 Sep 19

Looking for flat conversion company near me?

What is a flat conversion?

A flat or unit conversion involves transforming an existing house or large flat into multiple smaller elements or units. This process is generally undertaken for commercial reasons, as the owner of the original house is able to sell or rent out multiple units for a profit. However, a flat conversion can also be useful if you need to accommodate a growing or extended family within a single property. Along with full flat conversions, partial conversions can be used to separate living quarters, working spaces, or guest wings.

Whether you want to build more capital, generate more rental income, or look after your family, flat conversions are a popular means of adapting a property to suit the needs of the owner. As you might expect, this process can be convoluted and challenging for property owners, with developers needing to abide by local planning laws, meet construction standards, and apply the conversion in a considered and high quality manner.

Building Company – Atomic Builds

The Atomic Build advantage

At Atomic Build, we merge vision and passion with experience and technical expertise. Flat conversions are a complex and ambitious undertaking, with experience required to overcome common hurdles and anticipate any potential issues that may arise. Much more than a building company, we provide custom solutions that involve every aspect of development. From planning permission through to surveying and engineering, our complete approach takes nothing for granted.


We have years of experience performing flat conversions in and around London, with our process broken down into the following phases:

  • 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


Atomic Build offers full and partial flat conversion services across the Greater London area. We work in the following locations, as well as many others: Richmond, Twickenham, Greenford, Harrow, Gerrards Cross, Hammersmith, Uxbridge, Iver, Watford, Pinner, Stanmore, Ruislip, Brentford, and Teddington.

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



– 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.

CIty, London Borough, etc
What type of service you are after?
Feel free to ask us anything regarding our services and pricing.