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Single Storey House Extensions in London

Create more space with a beautifully designed single storey extension. Architectural drawings, planning permission and building regulations handled.

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Single Storey House Extensions in London

A single storey rear or side extension is one of the most cost-effective ways to create additional living space. Crown Architecture designs high-quality single storey extensions that seamlessly integrate with your existing property.

Whether you need a larger kitchen-diner, a home office, a playroom, or an open-plan living area, our architects will design a space that maximises natural light, flow, and kerb appeal.

Single Storey Extension Types

  • Rear Extension — extends into your garden, ideal for open-plan kitchen-diners
  • Side Return Extension — fills in the narrow passage beside your home
  • Wrap-Around Extension — combines rear and side return for maximum space
  • Orangery / Garden Room — glazed extensions bringing the outside in

Our Single Storey Extension Service Includes

  • Architectural design drawings and 3D visualisations
  • Planning permission application management
  • Building regulations drawings and structural calculations
  • Party wall agreements (where required)
  • Tender package for builders

What Our Clients Say

★★★★★

“Crown Architecture made the entire process stress-free. From first consultation to planning approval took just 9 weeks. Exceptional service.”

— Sarah M., Hackney

★★★★★

“Professional, responsive, and incredibly knowledgeable. Our project came in on budget and the design exceeded our expectations.”

— James R., Islington

★★★★★

“Got planning permission in 8 weeks — we’d been refused before with a different architect. Crown Architecture understood exactly what the council wanted.”

— Priya K., Bromley