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Lancashire Window

Single Storey Extensions

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Single Storey Extensions in Lancashire

The most popular home extension option — a single storey rear extension can transform your kitchen, dining room, or living space. Lancashire Window designs and builds stunning single storey extensions across Burnley, Blackburn, and Lancashire.

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Transform Your Ground Floor

Create a larger kitchen, open-plan living, or a brand new room.

Excellent Return on Investment

Single storey extensions typically add more value than they cost.

Often Permitted Development

Many single storey extensions don't need full planning permission.

Completed in Weeks

A typical single storey extension takes 8–12 weeks to complete.

Single Storey Extensions — Lancashire's Most Popular Choice

A single storey rear extension is the most popular and versatile home improvement available. Whether you’re looking to create an open-plan kitchen-diner, add a utility room, build a home office, or simply make your living space feel more spacious, a single storey extension delivers exactly what you need at a realistic cost.

Lancashire Window manages your single storey extension from initial design through to completion. Our experienced team handles planning, groundworks, structural construction, windows, doors, roofing, insulation, and finishing — all coordinated by a dedicated project manager across Burnley, Blackburn, and the whole of Lancashire.

  • ✓Open-plan kitchen-diners — the most popular configuration
  • ✓Garden rooms and orangeries — create a stunning connection to the garden
  • ✓Home offices and studies — ideal for remote working
  • ✓Utility rooms and boot rooms — practical additions for family life
  • ✓Bedrooms and bathrooms — useful for accessible living
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Transform Your Ground Floor

A single storey extension is the most cost-effective way to create significant additional living space.

8-12
Weeks Build
100%
Managed
Free
Design Visit

Frequently Asked Questions

Under permitted development, most detached and semi-detached houses can extend up to 4m rear (or 6m under Prior Approval), and terraced houses up to 3m (or 6m with Prior Approval), subject to height and other restrictions. We’ll advise on your specific situation during a free consultation.
A typical single storey rear extension takes 8–12 weeks from start of construction to completion. This assumes planning and materials are in place. We’ll give you a detailed programme during your design consultation.
We manage the entire project including design, planning, groundworks and foundations, structural construction, roofing, windows and doors, insulation, plastering, electrics (first fix), decoration prep, and snagging.
Yes — Lancashire Window builds single storey extensions throughout Burnley, Blackburn, and the whole of Lancashire.

Book Your Free Extension Design Visit

Contact Lancashire Window today and let’s discuss your single storey extension. We’ll visit your home and provide a detailed, competitive, no-obligation quote.