Rear Extension Building Project – South West London

Project Overview

  • Client: Kate C.
  • Location: South West London
  • Sector: Residential
  • Service Type: Rear Extension – Design & Build
  • Duration: 10 weeks
  • Completion Date: August 2025

Project Objectives

  • Create a spacious rear extension to increase kitchen and dining area.
  • Integrate natural light with large bi-fold doors and skylights.
  • Ensure seamless connection between new extension and existing house.
  • Deliver a modern, energy-efficient construction with long-term value.

Scope of Works

  • Full demolition of rear wall and preparation of foundations.
  • Construction of new single-storey rear extension.
  • Installation of structural steel beams (RSJs).
  • High-performance insulation and damp-proofing.
  • Roof lantern and skylights for maximum natural light.
  • Bespoke kitchen installation with modern fittings.
  • Exterior brickwork and render to match the original property.

Challenges & Solutions

  • Challenge: Limited site access through narrow side passage.
    Solution: Scheduled deliveries in smaller loads and used compact machinery to minimise disruption.

  • Challenge: Need to match existing brickwork for planning compliance.
    Solution: Sourced reclaimed London stock bricks for a perfect visual blend.

Results

  • Extension delivered on time within 10 weeks.
  • 30% increase in ground floor living space.
  • Seamless integration with the existing home architecture.
  • Improved natural light and energy efficiency.
  • Property value increased significantly.

Client Testimonial

“Bigness made the process stress-free. The rear extension has transformed our home – the extra space and natural light are incredible. The team was professional, efficient, and kept everything on schedule.” – Kate C.

Key Takeaways

  • Smart planning allows even constrained sites to deliver high-quality extensions.
  • Matching materials ensures planning compliance and architectural consistency.
  • Rear extensions are one of the best investments for adding both space and property value in London homes.