Extensions
Two-storey extensions
More space upstairs and downstairs, in one build.
Space on both floors.
A two-storey extension adds space downstairs and upstairs in one build.
We design each one to sit naturally with your home, run the build and coordinate every trade, and guide you through planning and building regulations.
- South Oxfordshire
- Test Valley
- Berkshire
- Surrey
Planning for a two-storey extension
Two-storey extensions are more likely to need a full planning application than single-storey ones, and they need building regulations approval. If you’re building on or near a boundary you share with a neighbour, the Party Wall etc. Act 1996 may also apply. Check with your local council before you start.
This is general guidance for England, not legal advice. The rules can change and can differ for your property, so always check with your local council before you start.
Often, yes. Permitted development rights for two-storey extensions are much more limited than for single-storey ones. Check with your local council before you start.
Most extensions need building regulations approval. Building regulations cover how it’s built, including structure, fire safety, insulation, drainage, ventilation and electrics.
Yes. We’ll guide you through planning and building regulations and, wherever we can, take care of all of it for you.
Talk to us
Tell us about your project
We’ll talk it through, come and see you if it helps, and put together a detailed proposal for your project.