Last Updated on 12 May 2025 by Tia Ellahi
Home Extension Ideas: What types of extensions are trending?
Popular home extension ideas in 2025 include open-plan kitchen-diners, rear garden extensions with sliding or bifold doors, and light-filled spaces with roof lanterns.
What’s Included in This Article:
- Top design and product trends for 2025 UK extensions
- Ideas for creating more space, light, and flow
- Planning permission and cost considerations
- FAQs
(Estimated reading time: 7–9 minutes)
Introduction
Planning a home extension in 2025? You’re not alone. More UK homeowners than ever are choosing to improve rather than move—transforming underused areas into light-filled, open-plan living spaces that better suit their lifestyles.
Whether you’re dreaming of a larger kitchen, a brighter living area, or a garden-facing family zone, the right extension can completely change how your home feels and functions.
What’s Driving Extension Trends in 2025?
As energy prices fluctuate and lifestyle habits shift, the modern UK homeowner wants an extension that offers:
- More natural light to reduce energy use
- Better indoor-outdoor flow for entertaining and relaxation
- A multifunctional layout that supports cooking, dining, and lounging
- Improved thermal performance and sustainability
The best home extension ideas don’t just add square footage—they improve the way you live, day in and day out.
Extension Design Trends to Watch in 2025
Roof Lanterns for Light from Above
Roof lanterns are one of the biggest trends this year. They flood open-plan spaces with natural light, reduce reliance on artificial lighting, and add a stunning architectural focal point.
Popular options include:
Why homeowners love it: Energy-efficient glazing, clean lines, and a major wow-factor.
Slim-Framed Sliding Doors
Frameless and panoramic sliding doors continue to be a top pick. They allow uninterrupted garden views, improve thermal performance, and help create that coveted indoor-outdoor connection.
Shop favourites:
Pro tip: Sliding doors are ideal where bifolds would interrupt furniture layout.
Bifold Doors for Open-Plan Flexibility
Bifold doors are still in demand for homeowners who want to fully open up the rear of their property during warmer months. They stack neatly to one side and offer a clean threshold to the garden.
Top options include:
Bifold doors bring the outdoors in—perfect for barbecues, family days, and soaking up the sun.
French Doors with a Twist
Modern French doors with aluminium or heritage finishes are also trending, especially for period properties or smaller extensions.
Smart Layout Choices That Maximise Your Space
Open-Plan Living/Kitchen/Dining
Merge the kitchen with a garden-facing dining room to create a seamless multifunctional space. Use glazed screens to zone areas without cutting light.
Cosy Corners & Snugs
Not all extensions need to be massive. A well-insulated, double-glazed corner with skylights and bifolds can become the most-used room in the house.
Kitchen Extensions
Add depth to galley kitchens with rear or side returns. Glazing above eye-level (with roof lanterns or flat roof lights) makes even compact spaces feel bigger.
Home Office Nooks
More of us are working from home—integrate a desk space within your extension, lit by natural daylight and tucked into an alcove or bay.
Planning, Costs & Practical Considerations
Do You Need Planning Permission?
In many cases, Permitted Development Rights allow for rear or side extensions without full planning permission—but there are limits.
Always check:
- Whether your property is listed or in a conservation area
- If your extension meets height, width, and boundary rules
How Much Will It Cost?
- Basic single-storey extension: £1,800–£2,500 per m²
- Mid-range kitchen or rear extension: £2,500–£3,500 per m²
- High-spec glazed extension: £3,500–£5,000+ per m²
Investing in your extension isn’t just about bricks and glass—it’s about building the lifestyle you want.
Conclusion
2025 is the year of smart, light-filled, lifestyle-focused home extensions. With the right glazing, layout, and architectural touches, you can create a space that’s not only more functional—but more joyful to live in.
At GFD Homes, we specialise in products that elevate your extension plans. From slimline sliding doors to thermally-efficient roof lanterns, we’re here to help every step of the way.
Design the space that brings your family together. We’ll help you light it, open it, and insulate it beautifully.
📞 Ready to plan your extension? Call our expert team on 01642 309576.
📚 Don’t forget to explore the GFD Blog for more ideas, tips, and buyer guides.
FAQs about Home Extension Ideas
Do roof lanterns lose heat?
No—modern lanterns use double glazing and thermal breaks to retain warmth and block UV.
What’s better—bifold or sliding doors?
Sliding doors offer uninterrupted views; bifolds allow full openings. It depends on your layout and preference.
How long does an extension take to build?
Typically 10–16 weeks depending on size, complexity, and weather.
Do I need an architect for a small extension?
Not always, but expert design input can help you maximise light and space.
More than doors – get inspired with these articles…
- How Long Does Double Glazing Last? Tips to Maximise Its Lifespan
- 15 Durable Window Styles That Balance Affordability and Quality
- Trade Home Extension Ideas: looking for trade prices? Visit our trade site, The Trade Village.
