If you’re looking to make a meaningful change to how your home works — not just now, but long-term — a double storey extension is one of the most effective ways to do it. With added space across two floors, you’re not just increasing square footage, you’re redefining your layout entirely.

This type of extension often supports major changes: a larger open-plan kitchen with a utility room below and a new bedroom and bathroom above, for example. It’s a chance to rethink the flow of your home, improve proportions, and add long-term value.

Unlike single storey extensions, these projects almost always require full planning permission due to the scale and impact on neighbouring properties. Height, overlooking, roof design, and materials are all carefully assessed by local authorities — so your drawings and application need to be both compliant and well-argued.

While Permitted Development may apply in limited situations, most double storey projects sit outside its thresholds. Homes in conservation areas or with listed status will need additional scrutiny, which we’re well-versed in handling.

You’ll also need to meet all Building Regulations, particularly around structure, fire safety between floors, insulation, and staircase design. Input from a structural engineer is often necessary, especially for load-bearing walls or steel beam placement — and we coordinate with consultants to ensure everything aligns from the outset.

Design-wise, balance is key. The extension should sit comfortably with the existing house while feeling considered and proportional, both from the outside and in how the internal spaces are arranged.
Double storey extensions require careful planning — but when done right, they reshape how you live in your home, now and in the future.

Ready to explore the potential of your property? Call us on 020 8206 0011 — let’s build something with real impact.