House Extensions in Hayle & Cornwall

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House Extensions in Hayle & Cornwall

Our house extensions are ideal because they have a variety of benefits such as letting in natural light and giving you extra security. At Brittania, we have many cost effective designs that will be ideal for your needs. We have a house extension  for homeowners in Hayle and Cornwall, so feel assured that there are styles that are right for you.

Luxury House Extensions

Get Your Designs

Our house extensions are habitable spaces that are versatile. This means they can be turned into a living room or an extra bathroom. The choice is entirely yours. All the designs are available with advanced double glazing, so you will get plenty of security measures to keep intruders out. What’s more, the doors are available with multi point locking systems and advanced shootbolt techniques, ensuring your family will be kept safe in the long run. 

What’s more, when you choose a house extension, it is much cheaper than an extension, resulting in a cost effective build. Get a beautiful space without breaking the bank. And, you can upgrade it further with triple glazing, which can tackle the worst winds.

Customisation Options




Chartwell Green




Golden Oak


Irish Oak






Slate Grey




Anthracite Grey

Get 3 FREE designs in 2 simple steps.

Find the perfect living space for your home with our user-friendly conservatory contact form. No matter what design you’re looking for, you can find the ideal designs for your home with our services.
Step 1

Select Your Favourite Designs

Select your favourite designs, send us a photo of the back of your home, and we’ll send you three personalised living spaces superimposed onto the pictures you send us.
Step 2

Choose Contact Method

We offer a variety of ways to get in touch with us for our living space designing services. Whether you prefer to message, email or call, you can choose the right method for you below.
Chat On WhatsApp
Request Callback
Submit Enquiry
Step 3

Enter Your Details

As you’ve selected to request a call or email, we’ll need some additional information from you to start the design process.
Final Step

Thank You! We’ll Be In Touch Shortly

Thank you for submitting your request. We look forward to working on your dream living space project with you.

What Happens Next?

Picking your favourite designs is just the start of your dream living space. Now that we’ve received your contact request and favourite designs, we’ll be in touch to assist you with our superimposed images. We look forward to hearing from you!

Why Choose Us?

Since 1982, we’ve developed a knack for high-quality work, with even higher quality customer service, so you’ll never need to worry when you’re with Britannia.

See Our Before & After

Want to see how we can transform your old conservatory? View our before and after photos here!
ISO 9001
Made in Britain
National Warranties
Sabik Marine

Available Online, In-Store or At Home

Experience the freedom of obtaining the products you desire, tailored to your preferences. Our dedicated team is always available to assist you whenever you require assistance. Your satisfaction is our priority.

Energy Efficient

Our house extensions offer fantastic energy efficiency that keeps your home warm, retaining natural heat in your property. This saves plenty of money on your energy bills, allowing you to spend on the things that matter.

Structural Integrity

Feel assured that our house extensions offer a massive 25 year guarantee, which means that if they get broken into, we have you covered. The designs are made from thick double glazing that can deal with robust knocks. Our team of installers prides themselves on quick lead times and unbeatable service, so we will fix it straight away.


Our extensions are fire tested to comply with the latest building and safety regulations, ensuring they are safe places to live in. What’s more, they have been pre approved by Assent and JHAI, ensuring they won’t get damaged.

Internal Pelmet

Our house extensions are available with an internal pelmet which houses lights. This is perfect if you want to host any parties or social gatherings. You can also place speakers here for added effect.

Cost-Effective Extension

A conservatory is ideal because it is a cost-effective installation, providing natural light and thermal efficiency in your property. Because the conservatories are largely composed form glass, they will let in heaps of natural light in your home, ensuring you save on energy bills.

If you have children, a conservatory is great at bridging the gap between the house and the garden. It supports all types of doors from patio doors to French doors, giving you plenty of ventilation and fresh air. 

And, the conservatory is great at saving space too, which is ideal if you want to sell your home. This is because a growing family will be impressed by the illusion of a bigger space. And, you will take advantage of a versatile build. Use it as a bathroom or a cinema room, perfect as a relaxing area.

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Further Customisation

At Britannia, we believe you should be given free rein to customise your product in any way you like. Choose from a bespoke range of styles and colours. We have an abundance of choices for you, from Chartwell Green for a natural look, to Golden Oak. Or, choose from any RAL colour for a bespoke selection of choices. 

What’s more, you can select a cornice to hide unsightly guttering. This will improve your home’s curb appeal straight away. And, the conservatory has low U values of 1.0 W/m²K, making it one of the warmest builds on the market.



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Frequently Asked Questions

What is a house extension?

A house extension is an extension of your living space. With a range of choices available such as Victorian and Edwardian,  you are spoilt for options. 

What colours do house extensions come in?

House extensions are available in a wide range of colours. Choose from muted colours such as Anthracite Grey, woodgrain finishes, or bright colours. We give homeowners the option of many different RAL colours, boosting their home’s personality.

How secure is my house extension?

House extensions are very secure, featuring advanced double glazing. This helps protect you against ribust knocks which ward off intruders and keep your family safe.

How much are orangeries?

It is difficult to provide a price for your orangery as customisation options, your exact location in Hayle, Cornwall, or the surrounding area, and other factors contribute to the overall costs. The best way to get a price is to call us at 01736 754825.

Happy Customers

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Network Britannia Windows Limited t/a CTG Windows is registered in England and Wales (Register no. 07750446). Credit is subject to status and affordability. Terms and conditions apply. Authorised and regulated by the Financial Conduct Authority. Network Britannia Windows Limited FCA Register no. 738269 trading as CTG Windows is an appointed representative of Ffenestri Limited FCA Register no. 716352 Kimberley Road, Clevedon, Somerset, BS21 6QJ is a credit broker, not the lender. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC. Authorised and Regulated by the Financial Conduct Authority.