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House Extensions in Littlehampton & West Sussex

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House Extensions in Littlehampton & West Sussex

Do you wish your home had more space? If so, then consider our house extensions. Designed and manufactured to bring you a bright and cheerful living space, our house extensions will enhance any property in Littlehampton, West Sussex, or the surrounding area. 

Excellent Insulation

Get Your Designs

Because we use high-quality materials in the manufacturing process, our house extensions may increase the levels of thermal insulation of your Littlehampton or West Sussex property. As a result, you will be able to enjoy the numerous benefits that accompany this, from reduced heating bills to less temperature fluctuations throughout the year.

Additionally, our house extensions will also provide superior noise insulation because of the double glazing on the windows. Because of this, our house extensions are a suitable option even for properties that are located in busier areas of Littlehampton, West Sussex, or the surrounding area.

Installation Guarantee

We have installed several home improvement products throughout Littlehampton, West Sussex, and the surrounding area. Because of this wealth of experience, we are confident in saying that we consider ourselves to be your local house extension and double glazing experts.

Because of our expertise in house extensions, we are confident enough to provide you with a free ten-year insurance-backed guarantee on your house extension. Should you have any questions regarding our house extensions, our expert staff will be able to guide you through our process.

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Range of Conservatory Roof Styles

View our range of conservatory roofs, compatible with all of our Architect Designed Living Spaces and find the perfect solution for your home.

Glass Roof

Solid Roof

Angmering double glazed

Tiled Roof

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Flat Roof

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Lantern Roof

Customisation Options


Harvest Brown


Carbon Grey


Terra Brick

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.
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Angmering double glazed units online quote
Angmering double glazed units free quote
Angmering double glazed units quote
Angmering double glazed units
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Angmering double glazed unit free online prices
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.

Planning Permission

Planning permission is not usually required for a house extension. This makes installing our house extensions a quicker and easier process, as we will be able to forego the process of applying for Planning Permission.


Available in different designs and customisation options, our house extensions will add style and enhance the beauty of any modern or heritage property in Littlehampton, West Sussex, or the surrounding area.

Thermal Efficiency

Because of the high-quality materials that we use to manufacture our house extensions, you may notice an improvement in the overall energy efficiency of your home. As a result, you may find yourself relying less on your central heating.

Added Value

Because our house extensions will provide your Littlehampton or West Sussex property with more living space, they are certain to add value to your property. This makes our house extensions a wise addition to any property.

Frequently Asked Questions

Are house extensions worth the time and money?

Yes, we believe that our house extensions are worth it, especially if you find yourself wishing for additional space. House extensions make for a worthwhile addition as you will be able to use them for anything, from a bedroom to a home gym or even a kitchen. Because of this, your imagination is your only limitation when deciding what to do with your new house extension.

Will a house extension add value to my home?

Not only will a house extension increase the value of your property, but it will also make your property highly sought after. This is because your Littlehampton or West Sussex property will have an extra room and be more spacious than other similar properties in your area.

This sought-after nature of house extensions can also provide you with peace of mind as you now know that if you ever decide to sell your property, you will be able to make back the money (or even more) that you spent to invest in a house extension.

Although the added value that a house extension provides depends on various factors, generally speaking, a house extension may increase the value of your property by 10%.

How much is a house extension?

It is difficult to give an exact price for your house extension as many factors affect the price. For a quote, we will need to know the size and style, your exact location in Littlehampton, West Sussex, or the surrounding area, and any other relevant information. Contact a member of our friendly expert team at 01903 723362 or use our online quoting system for more details.

Happy Customers

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