Double Storey Extensions

Double Storey Extension and Renovation 

Atomic Build offers life-transforming double storey extensions to residents across Greater London. If you’re feeling constrained by your current house and want more room to stretch your legs, a double storey extension can be the perfect solution.

While adding a second storey to your home is not a quick process, it can be a sensible alternative to moving house when you’re ready to size up. We offer industry experience, detailed consultation, and construction expertise for all extension projects.

home extension in London
KENSINGTON AND CHELSEA double storey extensions
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
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

Double storey extension or renovation

There are many reasons to opt for a second storey extension or renovation, and each project we take on is handled in the same tailored and considered manner. Along with design and engineering, planning permission is another important consideration that demands industry experience and local knowledge.

Whether you’re a growing family looking for additional bedrooms, a professional who wants to work from home, or an ambitious collector seeking more space, we will take time to understand your unique needs and implement the best possible solutions. Common reasons for a second storey renovation or extension include:

  • Upstairs living room
  • Extra bedrooms
  • Teenagers or parent’s retreat
  • Cinema or games room
  • Home office or workshop
  • Storage space
  • Airbnb conversion

Atomic Build’s double-storey advantage

Our multi-disciplinary approach to home design and construction takes nothing for granted, with high standards set and tailored living solutions created for all. Whether you want a new double storey extension or an extensive renovation of your existing space, we know how to create functional and attractive two storey homes that give you room to grow.

Our double-storey extension process

We have years of experience with second storey extensions and renovations, with our proven process broken down into the following phases:

  • Free site meeting – We will establish the scope and budget of your project, including a detailed gap analysis.
  • Pre-construction pack – You will receive forecasts for all building works, construction stages, and timescales.
  • Detailed design development – We will conduct a feasibility study, along with architectural drawings and visualisations.
  • Contract stage – Contract terms will be defined, teams will be assigned, and suppliers will be listed.
  • Building commencement – A health and safety audit will be carried out, along with a quality control system.
  • Completion and deployment – Once your home is complete, we will sign-off and issue you with an insurance-backed guarantee.

Two-storey extensions in the following locations

Atomic Build specialise in the design and construction of double-storey homes and structures across Greater London. We are also your second storey renovations company of choice, working in the following locations, among 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.

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