EXTENSION PROJECTS LONDON

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H1: Extension Projects London – Completed House Extensions & Kitchen Extensions | LASTING LTD

Explore our completed house extension and kitchen extension projects across London.
LASTING LTD specialises in structural work, foundation construction, RSJ installation, glazing, roofing, insulation and full interior finishing — delivering premium extensions that transform homes.

Single Storey • Double Storey • Rear Extensions • Side Return • Wrap-Around • Kitchen Extensions

Fully insured • Structural experts • Premium finishing

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Our Extension Projects

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1. Rear Single-Storey Extension – North London

Scope of Works:

• New foundations & brickwork

• Structural steel RSJ beam

• Skylights + sliding doors

• Open-plan kitchen/dining layout

• Underfloor heating

• New flooring & plastering

Result: Bright, spacious family area with excellent flow into the garden.

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2. Wrap-Around Extension (L-Shaped) – Enfield

Scope of Works:

• Side return + rear extension combined

• Complete reconfiguration of ground floor

• Large kitchen island + dining zone

• Roof lantern + wide glazing

• Utility room installation

Result: Maximum expansion of ground floor with premium open-plan design.

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3. Side Return Extension – Victorian Terrace

Scope of Works:

• Side infill steel beams

• Enlarged kitchen area

• Skylights & aluminium glazing

• New kitchen fitting

• Bespoke internal storage

Result: Perfect solution for narrow London homes — more width, more light.

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4. Double-Storey Extension – Semi-Detached House

Scope of Works:

• Structural blockwork & steel beams

• New bedroom + ensuite upstairs

• Expanded kitchen/living room downstairs

• Full plumbing, electrics, heating

• Exterior rendering & finishing

Result: Substantial increase in property space and value.

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5. Kitchen Extension with RSJ Knock-Through

Scope of Works:

• Removal of load-bearing wall

• RSJ beam installation

• Skylights + wide garden doors

• Custom kitchen installation

• Electrical rewiring

Result: Stunning open-plan cooking & dining space.

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Extension Types We Build

Single Storey Extensions

Rear Extensions

Side Return Extensions

Wrap-Around Extensions

Double Storey Extensions

Kitchen Extensions

Structural RSJ Conversions

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Extension Cost Examples (London 2025)

CTA: Get a Free Extension Quote

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What’s Included in an Extension Project

STRUCTURAL WORK

• Foundations & drainage

• Brick/block construction

• RSJ steel beams

• Roof construction (flat/pitched)

• Skylights / roof lanterns

MEP (Mechanical, Electrical, Plumbing)

• Electrical rewiring

• Heating & radiators / UFH

• Plumbing for kitchens/bathrooms

INTERIOR FINISHING

• Plastering

• Decoration

• Flooring

• LED lighting installations

EXTERIOR FINISHING

• Rendering / cladding

• Brickwork matching

• Garden steps or patio tie-in

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Our Extension Project Process

Site visit & design consultation
Architectural drawings & structural calculations
Planning permission support
Construction & structural works
Roofing, glazing & insulation
Interior installation & finishing
Final inspection & handover

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Why Clients Choose LASTING LTD

Structural expertise (RSJ specialists)

Fast, clean and reliable building team

Premium finishing quality

Transparent pricing

WhatsApp updates during the project

All certificates & warranties provided

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Areas We Cover

• North London

• East London

• West London

• Enfield

• Barnet

• Haringey

• Walthamstow

• Edmonton

• Palmers Green

• Finchley

• Muswell Hill

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• House Extensions London

• Single Storey Extension

• Side Return Extension

• Wrap-Around Extension

• Double Storey Extension

• Kitchen Extension

• RSJ Installation

• House Renovation

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Start Your Extension Project Today

LASTING LTD delivers premium-quality extensions that improve space, comfort and property value.

CTA:

• Get a Free Quote

• WhatsApp Us (Fast Response)

• Book a Site Visit