Modern Glass Extensions South West London
30, Jun, 2025
Looking to add extra space while making your home brighter and more connected to your garden? A modern glass extension is the perfect way to expand your living space with clean lines and a bright, open feel.
At Denham Crescent, we design and build modern glass extensions across South West London, managing every step for you, from planning and design to construction and finishes. All you need to do is enjoy your beautiful new space.
What Is a Modern Glass Extension?
A modern glass extension uses large glass panels and slim frames to create a bright, open area that connects your indoor space with your garden or outdoor area.
You can use a glass extension for a kitchen, living room, dining area, or even a stylish home office. It adds a contemporary look to your property and creates a seamless link between your home and nature.
Is a Glass Extension Right for You?
You should consider a glass extension if:
You want more natural light in your home.
You like modern, clean design with large windows and open spaces.
You want to enjoy your garden view all year round.
You are looking to add value to your property.
You need a flexible space for dining, working, or relaxing.
If you’re unsure whether a glass extension will work for your property, we offer a free consultation to discuss your options.
Benefits of a Glass Extension
Light-Filled Living Spaces
Glass extensions let in maximum natural light, making your home feel bigger and brighter.
Modern Aesthetic
Large glass panels and slim frames add a contemporary feel to your home, suiting modern lifestyles.
Connection with the Outdoors
Enjoy your garden views and create a seamless transition between your indoor and outdoor areas.
Flexible Design
Perfect for creating an open-plan kitchen, a bright dining area, or a stylish home office.
Adds Property Value
A high-quality glass extension can significantly increase your home's value, making it a smart investment.
Do You Need Planning Permission for a Glass Extension?
In many cases, a glass extension can be built under Permitted Development Rights, meaning you may not need planning permission if:
The extension meets height and depth limits.
It does not take up more than half of your outdoor space.
Your home is not in a conservation area or listed building.
At Denham Crescent, we manage all planning checks and applications for you, ensuring your project follows local council and building regulations, including structural safety, insulation, and drainage.
What’s Included in Our Glass Extension Service?
We offer a complete design-and-build service, including:
Free Consultation: We assess your home and discuss your ideas to create a clear plan.
Custom Design: We design your extension to match your lifestyle and the style of your home.
Planning & Regulations: We handle all necessary applications and approvals.
Construction: We take care of all construction, from foundations to glazing installation.
Glazing: We use high-quality, energy-efficient glass with slim frames for a modern look.
Interior Works: We handle plumbing, electrics, heating, and finishes.
Final Touches: Flooring, lighting, and decoration, ready for you to use.
Glass Extension FAQs
How long does it take?
A typical glass extension takes around 12–16 weeks, depending on size and complexity.
Will it be warm in winter?
Yes, we use high-performance glass and insulation to keep your space comfortable all year round.
Is it secure?
We use toughened, secure glazing systems for safety and peace of mind.
Can I live in my house while it’s built?
Yes, we manage the site to reduce disruption, allowing you to stay in your home during the build.
Areas We Serve
We build modern glass extensions in South West London, including:
Wimbledon | Raynes Park | Merton | Kingston | Balham | Clapham | Tooting | Morden | Mitcham
If you live outside these areas, please contact us, as we also take on projects across London.
Pricing Guide
The cost of a modern glass extension depends on the size, glazing system, and interior finishes you choose.
Your quote will include:
Full design and planning
All materials and labour
Project management
Interior finishes
Optional extras like underfloor heating or smart lighting
All costs are transparent with no hidden fees
Get in Touch
Ready to create a light-filled, modern extension that transforms your home?
Contact Denham Crescent today to book your free consultation. We will help you design and build a stunning glass extension that adds space, light, and value to your South West London home.
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