House Extensions in Hackney

At Bigness Group, we specialise in designing and building bespoke house extensions in Hackney — where period charm meets modern living.
From Victorian terraces in Stoke Newington and Hackney Central to converted lofts in Clapton and modern homes in Dalston, we craft extensions that expand space, maximise light, and preserve the character of your property.

We handle the full process — from design and planning to construction and finish — ensuring a seamless experience and outstanding results, every time.

Design and Build Services

Our Hackney design-and-build team provides complete end-to-end project management:

• Full measured survey, design, and 3D visualisation

• Planning and permitted development advice for Hackney Council

• Structural engineering and Building Control coordination

• Kitchen, dining, and living area redesigns

• Dedicated project management and progress updates

With one integrated team overseeing your project, you get total accountability, clear communication, and the quality that defines Bigness.

Types of Extensions We Build

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

• Glass Box Extensions – Contemporary builds with minimalist architecture.
• Modern House Extensions – Sleek contemporary designs with minimal framing.
• Single-Storey Extensions – Ideal for narrow Victorian and Edwardian homes in Hackney Central.
• Double-Storey Extensions – Add valuable space on both floors for growing families.
• Side-Return Extensions – Perfect for Victorian and Edwardian terraces in Blackheath.
• Rear Extensions – Create light-filled dining spaces opening onto gardens.
• Wrap-Around Extensions – Combine side and rear layouts for seamless flow.
• Conservatories & Orangeries – Elegant glazed rooms for all seasons.
• Loft & Garage Conversions with Extensions – Transform underused space into stylish living areas.

Construction Standards

Every Bigness project in Hackney is built with precision and attention to detail:

1. Groundworks & Foundations – Engineered for urban sites and terraced layouts.
2. Steelwork & Framing – RSJs and beams installed for open-plan layouts.
3. Walls & Roofing – Brick match or render finish with warm-roof insulation.
4. Windows & Glazing – Energy-efficient systems meeting latest Part L standards.
5. Interiors & Finishes – Plumbing, electrical, flooring, and bespoke joinery.
6. Building Control Sign-Off – Certification and long-term workmanship warranty.

Local Knowledge

We have extensive experience with Hackney Council’s planning and conservation regulations, including works in De Beauvoir, Clapton Square, and Victoria Park.
Our designs respect local heritage while incorporating modern engineering and sustainable materials — ensuring smooth approvals and long-lasting results.

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.