Kitchen Extension Specialists in London
Create the open-plan kitchen-diner you’ve always wanted. Expert architects for kitchen extensions across all London boroughs.
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Kitchen Extension Specialists in London
A kitchen extension transforms one of the most-used rooms in your home. Crown Architecture specialises in designing light-filled, open-plan kitchen extensions that seamlessly connect your indoor and outdoor living spaces.
From a modest rear extension to create a larger kitchen, to a full-width kitchen-dining-family room that opens onto the garden, our architects design spaces that work beautifully for modern living.
Popular Kitchen Extension Designs
- Rear Kitchen Extension — the most common choice, extends into the garden
- Side Return Kitchen Extension — fills in the narrow side passage, often adding 3–4m²
- Full-Width Kitchen Extension — spans the full width of the rear for maximum impact
- Bifold / Sliding Doors — we design extensions that open fully to the garden
Kitchen Extension Costs in London (2025)
- Small kitchen extension (up to 10m²): from £30,000
- Medium extension (10–20m²): from £45,000
- Large kitchen-diner (20m²+): from £65,000
- All prices include architectural drawings and project management
What Our Clients Say
“Crown Architecture made the entire process stress-free. From first consultation to planning approval took just 9 weeks. Exceptional service.”
“Professional, responsive, and incredibly knowledgeable. Our project came in on budget and the design exceeded our expectations.”
“Got planning permission in 8 weeks — we’d been refused before with a different architect. Crown Architecture understood exactly what the council wanted.”