Client: Private Homeowner
Location: London
Sector: Residential Construction
Service Type: Design & Build | House Extension | Structural Works
Duration: 10 Weeks
Completion Date: May 2025
Project Overview
Bigness Group was commissioned to deliver a full single-storey house extension in London, designed to expand living space while maintaining the property’s architectural character.
This Design & Build project included new structural walls, pitched roofing, insulation, and a seamless brickwork match to the existing home. Our team managed every stage — from foundations to final finishes — delivering a practical and visually integrated result.
Project Objectives
- Construct a single-storey rear extension for additional kitchen and living space.
- Maintain consistent external design and brickwork.
- Ensure structural integrity and waterproofing throughout.
- Deliver within tight urban site constraints and access limitations.
Scope of Works
- Site setup and groundworks
- Foundation excavation and concrete pouring
- Structural brick and block wall construction
- Roof structure and tile installation
- Window and door openings with lintel installation
- External drainage and waterproofing
- Electrical and plumbing connections for the new space
- Finishing and landscaping integration
Challenges & Solutions
Challenge 1 – Limited Access for Materials
The rear garden had narrow access for machinery and transport.
Solution: We coordinated phased deliveries and manual handling procedures to maintain progress without delay.
Challenge 2 – Weather Protection During Build
Unpredictable rain threatened progress.
Solution: Temporary roof coverings were installed, allowing the team to work continuously and maintain build quality.
Challenge 3 – Brick Match and Seamless Design
It was crucial to ensure the new brickwork perfectly matched the existing structure.
Solution: Our masons sourced a custom batch of brick and mortar to replicate the original colour and bond pattern.
Results
- Fully completed Single-Storey Extension seamlessly integrated with the original house.
- Expanded internal living area, improving comfort and property value.
- Completed on time and within budget with zero structural defects.
Progress Highlights:
- Brick and block construction stages
- Roofing and insulation installation
- Exterior completion and finishing touches
💬 Client Testimonial
“The team at Bigness Group delivered exactly what we envisioned. From planning to completion, the process was smooth, professional, and fast. The new extension feels like part of the original home.”
Why Choose Bigness Group
- Experts in Single Storey Extension Options and Full House Extensions across London
- Complete design, build, and project management under one roof
- Structural engineering, planning, and finishing all handled in-house
- Transparent pricing and on-time delivery
- Dedicated support from concept to completion
Whether you’re expanding your home or improving its value, Bigness Group offers modern, compliant, and affordable house extension solutions tailored to your property.
Project Gallery
