SINGLE STOREY EXTENSION LONDON
H1: Single Storey Extension London – Rear, Side & Kitchen Extensions | LASTING LTD
A single storey extension is one of the most effective ways to increase ground-floor space, improve natural light and create a modern open-plan layout.
LASTING LTD specialises in designing and building high-quality single storey extensions across London — including rear extensions, side extensions and kitchen extensions.
Enhanced living space • Fast construction • High property value increase
Fully insured • NHBC-registered • Free site visit & quotation
Why Choose a Single Storey Extension?
Single storey extensions offer excellent flexibility and strong return on investment:
Create a large open-plan kitchen/living area
Add 15–40 m² of usable space
Perfect for bifold or sliding doors
Ideal for modern layouts & more natural light
Increase property value by up to 20%
Works well for terraced, semi-detached & detached homes
Ideal for:
Kitchen diners
Family living rooms
Utility rooms
Home offices
Playrooms
Open-plan layouts
Why Homeowners Choose LASTING LTD
10+ years of extension building experience
Structural steel (RSJ) works included
Planning & Building Control assistance
Full project management
Transparent fixed pricing
Premium quality finishes
Clear communication and dedicated site manager
CTA: Get a Free Single Storey Extension Quote
Types of Single Storey Extensions We Build
1. Rear Single Storey Extension
The most popular option in London.
Perfect for:
Luxury kitchen diner
Large open-plan living
Skylights & roof lanterns
Rear sliding or bifold doors
2. Side / Side-Return Extension
Ideal for Victorian and Edwardian homes with side gaps.
Benefits:
Expands narrow kitchens
Adds valuable floor space
Allows large glazing & natural light
3. Kitchen Extension
The best way to build a modern open-plan kitchen diner.
Can include:
Kitchen island
Feature skylights
Underfloor heating
Premium sliding doors
4. Single Storey Wrap-Around Extension
For maximum space and luxury.
Creates:
Huge open-plan layout
Room for dining + lounge + kitchen
Utility room + WC options
What’s Included in Our Single Storey Extensions
STRUCTURAL WORKS
Excavation & foundations
Drainage upgrades
RSJ steel beams
Load-bearing wall removal
Blockwork / brickwork construction
Flat or pitched roof (optional lanterns)
EXTERNAL WORKS
Bifold / sliding / French doors
Roof lights & skylights
Insulation & waterproofing
Render, brick slips, or cladding
INTERNAL WORKS
Electrical rewiring & lighting
Plumbing & heating
Underfloor heating (optional)
Plastering, flooring, painting
Kitchen installation (optional)
MANAGEMENT
Drawings (optional)
Structural engineering
Building Control support
Weekly progress updates
Snagging & final certificates
Single Storey Extension Cost in 2025 (London Market)
| Extension Type | Typical Cost |
|---|---|
| Rear Single Storey (15–25 m²) | £35,000 – £55,000 |
| Medium Rear / Kitchen Extension (25–35 m²) | £45,000 – £65,000 |
| Large Rear Extension (35–45 m²) | £60,000 – £80,000 |
| Side-Return Extension | £25,000 – £45,000 |
| Single Storey Wrap-Around | £70,000 – £110,000 |
Prices include: Labour & materials Structural steel Glazing Plumbing, electrics, heating Flooring & decorating Project management
CTA: Request a Personalised Price Estimate
Timeline for a Single Storey Extension
Planning & design: 2–6 weeks
Groundworks & structure: 3–6 weeks
Roofing & glazing: 1–3 weeks
Interior finishing: 3–6 weeks
Typical total: 8–14 weeks
Benefits of Working With LASTING LTD
High-end construction & finishing
Experienced structural team
Clean and efficient work
No hidden extras
On-time delivery
Excellent communication
Areas We Cover
North London
East London
Enfield
Barnet
Haringey
Edmonton
Walthamstow
Palmers Green
Finchley
Muswell Hill
Tottenham
Related Services:
Related Areas:
Start Your Single Storey Extension Project Today
Transform your home with a modern open-plan extension delivered by expert London builders.
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LASTING LTD
Premium property renovation & construction company in London.
WhatsApp:
07448 886776
info@lastingltd.com
Office Address
London
34 Pine House
9 Droop Street
W10 4EJ
