You may have seen some properties where the conservatory looks more like a full addition to the home. So, does that still count as a conservatory, or has it officially become an extension? 

Put simply, a conservatory becomes an extension when there’s more brickwork than glazing.

However, there are a few other factors that determine whether it qualifies as a conservatory or an extension:

• Glazing requirements: To legally count as a conservatory, it should have at least 75% glazed roof and 50% glazed walls.
• Planning permission: If the conservatory exceeds permitted development rights and requires planning permission, it may be classed as an extension.
• Heating & insulation: If the conservatory integrates with the house’s main heating systems, it officially becomes a part of the home rather than a separate space

Through this guide, we’ll cover converting your conservatory into an extension, why you might want to do this, the costs involved and how to make sure your project is completed to the highest standards.

Can You Convert Your Conservatory into an Extension?

Already have a fully functional conservatory, but considering transforming it into an extension? You’re not alone. 

What may have once been a dream addition to your home might now feel outdated or impractical. Perhaps you want a larger kitchen, a more open-plan living area or simply a space that can be enjoyed all year round? That’s where an extension comes in.

There are generally two approaches to this kind of project:

• Complete rebuild: Remove the existing conservatory and replace it with a purpose-built extension.
• Partial rebuild: Retain the existing foundations (if they meet structural requirements), remove most of the conservatory framework and build upwards in the style of an extension.

Either way, the key is hiring a trusted home improvement company, like West Midlands Double Glazing, who can advise on structural integrity, planning permission, building regulations and design.

Here at WMDG, we’re more than just a glazing company. We provide an all-encompassing range of home renovation services, including windows, doors, porches, conservatories, conservatory roof replacements, orangeries, extensions, loft conversions, garage conversions and full house transformations. 

So, put simply, we are more than capable of helping you achieve your dream home by converting your conservatory into an extension. 

Why Change a Conservatory Into an Extension

There are several reasons why homeowners may consider transforming their existing conservatory into an extension. 

This could be because their current conservatory may not be: 

• Properly maintained
• Functioning as intended (for example, too cold in the winter and too hot in the summer)
• Blending seamlessly with the aesthetics of the house 
• Letting in enough natural light 
• Big enough for the desired room use 
• Modern enough (could be dated/traditional)

Another big reason why you may want to change your conservatory into an extension is that it can add significant value to your home. 

Your conservatory should already be adding value to your property, but an extension can increase that figure even more, as it’s seen as “true living space” rather than an add-on.

Conservatory vs Extension: What’s the Cost Difference?

Your budget will also dictate whether you can either build an extension instead of a conservatory or convert your existing conservatory into an extension. 

Here is the breakdown of costs for the two:

• Conservatory costs: £20,000 – £30,000+
• Extension costs: £25,000 – £45,000

While a conservatory is generally more affordable, an extension offers superior insulation, better integration with your home and more flexibility in terms of use. In the long run, it may also provide a greater return on investment when it comes to resale value.

Do You Need Planning Permission to Convert a Conservatory into an Extension?

Planning permission is another crucial factor when transforming a conservatory into an extension. In many cases, conservatories fall under permitted development rights and don’t need planning approval, provided they meet certain size and location restrictions.

However, once you start changing the structure into something that resembles a full extension, you’ll often need to:

• Apply for planning permission (if the size, height or location exceeds permitted limits).
• Ensure the build complies with building regulations, particularly around insulation, structural safety and energy efficiency.
• Consider party wall agreements if your build is close to a neighbour’s boundary.

It’s always best to seek professional guidance early on, so you don’t risk delays or costly mistakes.

Alternatives to Full Extensions

Not ready to commit to a full extension yet? You may instead be considering optimising your existing conservatory. 

There are other modern upgrades that can make your conservatory more usable in the meantime, including: 

• Conservatory roof replacement: Swapping out a polycarbonate or glass roof for a tiled roof can make a huge difference in temperature control and aesthetics.
• Orangeries: These are a halfway point between conservatories and extensions, with a greater mix of brickwork and glazing. Learn more about how much an orangery costs from our dedicated guide.
• Insulated walls or flooring: Instead of converting, you could improve thermal efficiency without a complete rebuild, making your conservatory more habitable in the more extreme weather months.

These options can provide many of the benefits of an extension at a lower cost, which could be desirable to families working on a budget.

Choose a Trusted Home Improvement Company

Do you need some advice or support regarding your conservatory or extension? Put your trust in our expert team at West Midlands Double Glazing. 

We’re here to answer any of your queries – simply give us a call and one of our experts will be able to talk you through your options, and advise you on what’s best for your property and budget requirements. 

With over 150 positive Google reviews, we’ve built a reputation as one of the most reliable and customer-focused companies in the region. We also offer a variety of finance options, including buy-now-pay-later plans, and at the time of writing, we’re the only provider in the West Midlands to offer finance terms of up to 20 years on conservatory projects.

Ready to start planning your new conservatory, orangery or extension? Get in touch with a member of our amazing team today to book in for your FREE quote and consultation.