Large Rear Double Pitched Roof Extensions
The Complete Guide to Large Rear Double Pitched Roof Extensions for London Homes
Adding space to your London home is more appealing than ever, and large rear double-pitched roof extensions are becoming a popular choice for homeowners looking to expand. If you’re in the 30-55 age bracket and want to create more room for your growing family, entertaining, or simply increase the value of your property, this guide is for you. Let’s walk through everything you need to know about this type of extension, from costs to where they’re most common and which houses they suit best.
Why Choose a Large Rear Double Pitched Roof Extension?
A large rear double pitched roof extension isn’t just a way to add space—it’s a design choice that can dramatically change the feel of your home. The double-pitched roof (think of two slopes meeting at a central point) adds height, light, and character that flat-roof extensions simply can’t match.
I recently helped a friend in Clapham extend the rear of their Victorian terrace with this design. The extra ceiling height and skylights transformed the back of the house, flooding it with light even on those gloomy London days. If you’re after something that looks as good as it functions, this might be the extension for you.
Key Benefits
- More Space: Ideal for larger kitchens, dining areas, or open-plan living spaces.
- More Light: Skylights or large windows in the roof bring in natural light.
- Better Aesthetics: A double pitched roof often blends better with traditional London properties.
- Increased Value: A well-designed extension can boost your home’s value by up to 20%.
How Much Does It Cost?
The cost of a large rear double pitched roof extension in London varies depending on the size, materials, and complexity of the project. However, here’s a rough breakdown:
- Cost per Square Metre: £1,900 to £3,000
- Average Size: 40-50 square metres
- Total Cost: £85,000 to £135,000
When my brother-in-law extended his semi-detached home in Walthamstow, he ended up spending around £95,000 for a 45m² extension. The final cost was driven up by premium materials and some bespoke design features, but the result was stunning.
Factors That Affect Cost
- Materials: Timber frame vs. brick can affect costs.
- Labour: London labour rates are higher than the national average.
- Design Complexity: Unique designs or extra features like bifold doors can add to the bill.
- Planning and Regulations: Don’t forget to budget for planning fees and any structural engineer consultations.
Where Are These Extensions Popular in London?
Large rear double pitched roof extensions aren’t just for the outer boroughs. They’re popular across London, but certain areas stand out.
North London
Areas like Finchley, Hampstead, and Highgate see many of these extensions. Victorian and Edwardian homes in these areas lend themselves well to pitched roof designs that blend with the existing architecture.
West London
In Chiswick and Ealing, large detached and semi-detached homes are prime candidates for extensions. Many homeowners choose double pitched roofs to maintain the period feel of their properties.
South London
Wandsworth, Clapham, and Dulwich are hotspots for rear extensions. Many of these homes are terraced or semi-detached, making pitched roof extensions a natural fit.
East London
Hackney and Walthamstow have seen a surge in rear extensions in recent years. Period terraces here often have generous gardens, providing the space needed for a large rear extension.
What Types of Houses Suit a Double Pitched Roof Extension?
Not every home can accommodate a large rear double pitched roof extension, but many can.
Victorian and Edwardian Homes
These period properties are prime candidates. The double pitched roof often mirrors existing rooflines, creating a seamless blend between old and new.
Terraced Houses
Even in more modest terraces, a rear extension can significantly increase living space without compromising garden area.
Semi-Detached and Detached Homes
These homes offer the most flexibility for larger extensions. I worked with a family in Ealing who extended their detached home to create a 60m² open-plan kitchen and living space with a vaulted ceiling. The result was incredible.
Design and Architectural Considerations
A large rear double pitched roof extension isn’t just about adding space—it’s about enhancing the existing structure. Here are a few design tips to keep in mind:
Integrating with the Existing Structure
A good extension should feel like it was always part of the house. Matching brickwork or timber cladding, using similar roof tiles, and respecting the proportions of the original house are crucial.
Natural Light
Don’t underestimate the importance of natural light. Consider large skylights or even a glazed gable end to maximize daylight. A friend of mine in Hackney opted for four large Velux windows, which completely transformed the atmosphere inside.
Open-Plan Living
Large rear extensions are perfect for creating open-plan living areas. This is especially useful if you’re extending to build a bigger kitchen or family room.
Planning Permission and Building Regulations
Planning permission can be one of the trickiest parts of any extension project.
Do You Need Planning Permission?
Some large rear extensions fall under permitted development rights, meaning you won’t need formal planning permission. However, if your extension exceeds certain limits (typically over 3m for terraced and semi-detached houses), you’ll need to apply.
Building Regulations
Even if planning permission isn’t required, building regulations approval is mandatory. This covers everything from structural safety to insulation standards. It’s worth working with an architect or structural engineer to ensure compliance.
FAQ (Frequently asked questions)
How long does a large rear double-pitched roof extension take to build?
On average, a large rear extension can take 3 to 6 months to complete, depending on the complexity of the project and weather conditions.
Will I need to move out during construction?
In most cases, you won’t need to move out, but expect some disruption. If you’re extending key areas like the kitchen, consider setting up a temporary cooking space.
How much value can a rear extension add to my home?
A well-executed extension can add up to 20% to your home’s value, depending on the quality of the build and market conditions.
Can I extend if I live in a conservation area?
Yes, but you may need additional planning permissions. It’s advisable to consult with your local planning authority early in the process.
Final Thoughts
A large rear double pitched roof extension can breathe new life into your home, creating more space and boosting its value. Whether you’re in Hackney, Clapham, or Ealing, this type of extension is a smart investment that can transform your living experience.
If you’re considering an extension, start by speaking to one of our architects or builders with experience in double pitched roof designs. Our insight can help you navigate the planning process and create a design that enhances your home for years to come.
