House Extensions in Camden

At Bigness Group, we design and build bespoke house extensions in Camden, bringing modern comfort and space to some of London’s most characterful homes.
From Georgian terraces in Bloomsbury and Victorian houses in Kentish Town to mews properties in Hampstead, we create extensions that balance architectural integrity with contemporary functionality.

Our experienced team manages the full process — from design and planning permission to engineering and construction — ensuring your project is delivered with precision, creativity, and care.

Design and Build Services

Our Camden design-and-build team provides a complete, end-to-end service tailored to your property’s character and needs:

• Architectural design, measured surveys, and 3D visualisations
• Planning and listed-building consent applications
• Structural design and Building Control coordination
• Kitchen, living, and loft integration for cohesive layouts
• Project management and progress reporting throughout

We handle every detail in-house to guarantee quality, speed, and smooth communication.

Types of Extensions We Build

We construct every major form of home extension across Brent, including:

• Glass Box Extensions – Striking glass box extensions that redefine modern living.
• Modern House Extensions – Transform your home with a sleek, light-filled modern extension.
• Single-Storey Extensions – Ideal for kitchens, dining areas, or open-plan living.
• Double-Storey Extensions – Add space on both levels for bedrooms, offices, or bathrooms.
• Side-Return Extensions – Perfect for Victorian and Edwardian properties with narrow side gaps.
• Rear Extensions – Create bright and modern spaces opening onto your garden.
• Wrap-Around Extensions – Combine side and rear expansions for maximum space and light.
• Conservatories & Orangeries – Classic glazed additions for year-round use.
• Loft & Garage Conversions with Extensions – Integrated vertical or lateral expansions for full property transformation.

Construction Standards

Every Bigness project in Camden is delivered under strict quality control and architectural sensitivity:

1. Groundworks & Foundations – Engineered for tight urban sites and older foundations.
2. Steel & Structure – Installed to open up interiors while preserving character.
3. Walls & Roofing – Brick match, zinc cladding, or slate roofs for heritage alignment.
4. Glazing & Insulation – High-performance systems meeting conservation standards.
5. Interiors – Custom joinery, underfloor heating, lighting, and finishes.
6. Final Inspection – Building Control certification and quality guarantee.

Local Knowledge

We have extensive experience with Camden Council’s planning and heritage requirements, including works within conservation areas and listed buildings. Our architects and planners ensure every design enhances your property while respecting its period style and neighbouring architecture.

Costs and Financing

Every extension is unique, but here’s a general guide:

💡 Factors include size, materials, access, and specification level.

We provide transparent quotes with detailed breakdowns and stage payments.
Financing options may be available through our partner lenders for eligible clients — ask our team for guidance on home improvement financing.