House Extension North London

H1: House Extension North London – Professional Extension Builders | LASTING LTD

Expand your home with a high-quality house extension in North London. LASTING LTD specialises in single-storey, double-storey, side return and wrap-around extensions — complete with full structural works, foundations, roofing and premium interior finishing.

NHBC-registered • Fully insured • Free site visit & quote


Why Choose LASTING LTD for House Extensions in North London?

  • 10+ years building extensions across North London

  • Structural works included (RSJ beams, steel frames)

  • Foundations, drainage, brickwork, roofing

  • Full project management from start to finish

  • Transparent costs with detailed breakdowns

  • Kitchen & bathroom installation available

  • £5M Public Liability Insurance

  • Clean, fast and reliable team

👉 CTA: Get a Free Extension Quote in North London


Types of House Extensions We Build

1. Rear Extension

Ideal for:

  • Open-plan kitchens

  • Dining areas

  • Larger living spaces


2. Side Return Extension

Perfect for Victorian/Edwardian houses in North London.
Creates wider kitchens and more natural light.


3. Double-Storey Extension

Adds maximum value and space:

  • New bedrooms

  • Additional bathrooms

  • Extended living areas


4. Wrap-Around Extension

Combines rear + side extension into one large open space.

Great for:

  • Luxury kitchen-diners

  • Open-plan living

  • Multi-room expansions


What’s Included in an Extension Build

✔ Groundworks & Structure

  • Excavation & foundations

  • Drainage installation

  • Concrete slabs

  • Structural steel beams (RSJ)

  • Load-bearing wall removal

  • Brickwork and blockwork

✔ Exterior Works

  • Roofing

  • Insulation

  • Windows & doors

  • Skylights

  • Rendering or cladding

✔ Interior Works

  • Plumbing & heating

  • Electrical installation

  • Plastering & decorating

  • Flooring & carpentry

  • Kitchen & bathroom fitting

👉 All work meets Building Regulations.


House Extension Cost in North London (2025)

Typical pricing:

  • Single-storey extension: £35,000–£65,000

  • Double-storey extension: £60,000–£120,000

  • Side return extension: £25,000–£45,000

  • Wrap-around extension: £70,000–£140,000

Includes:
✔ labour
✔ materials
✔ structural steel
✔ project management
✔ interior finishing

👉 CTA: Request a Personalised Quote


Areas We Serve in North London

We build extensions in:

  • Enfield

  • Barnet

  • Haringey

  • Finchley

  • Muswell Hill

  • Wood Green

  • Tottenham

  • Palmers Green

  • Winchmore Hill

  • Edmonton

  • Whetstone

  • Highgate

  • Alexandra Palace

  • Southgate


Why North London Clients Trust LASTING LTD

  • High-end finishing

  • Professional structural work

  • Clear timelines & communication

  • Fair pricing, no hidden extras

  • Clean, respectful and reliable builders


Start Your Extension Project in North London Today

More space. Higher value. Better living.
We deliver extensions the right way.

CTA:

  • Get a Free Quote

  • WhatsApp Us (Fast Response)

  • Book a Site Visit

Chat with LASTING LTD