Extensions Services.

A well-designed home extension is one of the most effective ways to add both space and value to your property. At Grand Innovations, we specialise in rear, side-return, wrap-around, and double-storey extensions across Surrey and London. Every project begins with a thorough site assessment and feasibility study, followed by detailed architectural drawings that respect the existing character of your home whilst maximising natural light and functional space.

Our extensions are built to the highest structural standards, fully compliant with current Building Regulations, and managed under our transparent weekly billing model — so you only ever pay for completed, signed-off work. Whether you need a larger kitchen-diner, a dedicated home office, or additional bedrooms, we handle everything from planning applications and structural engineering through to the final snagging inspection.